Ratings

KOSHINO Kazuhiko (Japan)

Japanese name(s): 腰野和彦

Ratings history

2025-03-27
2025-02-28
2025-01-31
2024-12-31
2024-06-30
2023-12-31
2023-06-30
2022-12-31
2022-06-30
2021-12-31
2021-06-30
2020-12-31
2020-06-30
2019-12-31
2019-06-30
2018-12-31
2018-06-30
2017-12-31
2017-06-30
2016-12-31
2016-06-30
2015-12-31
2015-06-30
2014-12-31
2014-06-30
2013-12-31
2013-06-30
2012-12-31
2012-06-30
2011-12-31
2011-06-30
2010-12-31
2010-06-30
2009-12-31
2009-06-30
2008-12-31
2008-06-30
2007-12-31
2007-06-30
2006-12-31
2006-06-30
2005-12-31
2005-06-30
2004-12-31
2004-06-30
2003-12-31
2003-06-30
2002-12-31
2002-06-30
2001-12-31
2001-06-30
2000-12-31
2000-06-30

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1594

Show the ratings ⇩

479 tournaments
2823 results
Player ID: 5519
Rated T288 in Japan and T337 in Asia&Oceania&Africa and T398 in the World
Latest rating: 1964

2025

2024
2023
2022
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2001
2000

2025-03-16: 45_Meijin(Japan)

NODA Yuna	won against	KOSHINO Kazuhiko
MIYAZAKI Yuji	won against	KOSHINO Kazuhiko
IWATA Hiroyuki	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	MATSUSHITA Shigeo
OHNO Tomohiro	won against	KOSHINO Kazuhiko
IZURA Daisei	won against	KOSHINO Kazuhiko
MURASE Keita	won against	KOSHINO Kazuhiko

2025-03-09: 230_Nagareyama_open(Japan)

TOKIWA Shuto	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KOBAYASHI Manabu
KOSHINO Kazuhiko	41-23	KITAJIMA Hideki
KOMATSU Kanaharu	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	OKUDA Tsuyoshi
SHIMIZU Goharu	33-31	KOSHINO Kazuhiko

2025-03-02: 128_Kanagawa_open_B(Japan)

OGURA Ryutaro	44-20	KOSHINO Kazuhiko
KITAJIMA Hideki	45-19	KOSHINO Kazuhiko
SANO Yoko	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	NAKAMURA Shunsuke
SUZUKI Yuto	36-28	KOSHINO Kazuhiko
OTANI Akimoto	56-08	KOSHINO Kazuhiko

2025-02-23: 2025_Tokyo_expert_games(Japan)

KOSHINO Kazuhiko	34-30	OHNO Atsuko
KOSHINO Kazuhiko	37-27	MIYAMOTO Sukehiro
NAKAMURA Kazuki	won against	KOSHINO Kazuhiko
MIYAMOTO Taketora	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	SHABE Hiroaki
NAKAMORI Hiroki	43-21	KOSHINO Kazuhiko

2025-01-26: 91_Tatebayashi_open(Japan)

IWAKURA Hiroaki	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	SAITO Mei
OKUDA Tsuyoshi	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	YAMAMOTO Kunihiro
OHUCHI Yasuhiro	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	56-08	EGUCHI Akira

2024-12-08: 228_Nagareyama_open(Japan)

KOSHINO Kazuhiko	39-25	OKUDA Tsuyoshi
TANAKA Yuki	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	TOMI Kazuko
SATO Minato	38-26	KOSHINO Kazuhiko
ROSE Brian	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	KANEKO Hikaru

2024-12-01: 37_Kawasaki_open(Japan)

KOSHINO Kazuhiko	61-03	KINOSHITA Akira
KOSHINO Kazuhiko	34-30	TOMITA Yo
MEISHO Yuta	49-15	KOSHINO Kazuhiko
ITAGAKI Kenichi	39-25	KOSHINO Kazuhiko
NISHIBAYASHI Touya	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	OTANI Akimoto

2024-11-23: 90_Tatebayashi_open(Japan)

KURACHI Takayuki	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	UENO Ukie
KOSHINO Kazuhiko	41-23	HACHIHATA Nobuyasu
KOSHINO Kazuhiko	38-26	OHUCHI Yasuhiro
IWAKURA Hiroaki	34-30	KOSHINO Kazuhiko
GOTO Hiroshi	54-10	KOSHINO Kazuhiko

2024-11-10: 227_Nagareyama_open(Japan)

KOSHINO Kazuhiko	57-07	MATSUMOTO Taiki
KOSHINO Kazuhiko	40-24	YAMANAKA Masayuki
TANIHARA Hinata	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TOMI Kazuko
TOKIWA Shuto	41-23	KOSHINO Kazuhiko
MURAKAMI Takeshi	43-21	KOSHINO Kazuhiko

2024-11-03: 126_Kanagawa_open_B(Japan)

ITO Kenshun	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	NISHIMURA Akihiro
ARAI Toshiko	36-28	KOSHINO Kazuhiko
KANEKO Hikaru	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KADOKURA Taya
KOSHINO Kazuhiko	34-30	MEISHO Yuta

2024-10-27: 285_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	35-29	TSUCHIGANE Link
KOSHINO Kazuhiko	40-24	NISHIBAYASHI Touya
OHGA Nao	32-32	KOSHINO Kazuhiko
UMEDA Yuwa	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	UEDA Kazunobu
KOSHINO Kazuhiko	45-19	SATAKE Yosuke

2024-10-06: 226_Nagareyama_open(Japan)

KOSHINO Kazuhiko	45-19	TOMI Kazuko
NAKAZAWA Junichi	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	SUZUKI Kenji
KOSHINO Kazuhiko	46-18	YUUKI Kokujin
KOSHINO Kazuhiko	39-25	SANO Yoko
SANO Kaoru	43-21	KOSHINO Kazuhiko

2024-09-29: 89_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	44-20	NATSUKAWA Hikaru
KOSHINO Kazuhiko	38-26	OKUDA Tsuyoshi
IWAKURA Hiroaki	45-19	KOSHINO Kazuhiko
OSHIMIZU Takanori	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	YAHAGIDA Yumeo
NAGATSUKA Ibuki	39-25	KOSHINO Kazuhiko

2024-09-16: 16_Chiba_open(Japan)

YAMAMOTO Yuta	53-11	KOSHINO Kazuhiko
SANO Joichiro	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KOBAYASHI Makoto
TOMI Kazuko	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	SANO Yoko
SATO Minato	45-19	KOSHINO Kazuhiko

2024-09-15: 284_Kanagoe_ranking_games(Japan)

HASEGAWA Takeshi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	TSUCHIGANE Link
KANEKO Hikaru	37-27	KOSHINO Kazuhiko
SAKURADA Ayata	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	HAMADA Masaru
KOSHINO Kazuhiko	35-29	MEISHO Yuta

2024-09-08: 50_All_Japan_championship(Japan)

TAKIZAWA Masaki	won against	KOSHINO Kazuhiko
OHMORI Keita	won against	KOSHINO Kazuhiko
MIYAGAWA Keigo	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	FUJITA Toshiko
KOSHINO Kazuhiko	won against	HORIUCHI Keiko
HISAMATSU Miu	won against	KOSHINO Kazuhiko
ARAKI Yasuyuki	won against	KOSHINO Kazuhiko

2024-09-01: 125_Kanagawa_open_B(Japan)

KOSHINO Kazuhiko	40-24	TAYAMA Tsubasa
KASHIMA Reisuke	32-32	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	33-31	KOSHINO Kazuhiko
NAGAO Hiroto	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KADOKURA Taya
ITAGAKI Kenichi	33-31	KOSHINO Kazuhiko

2024-08-25: 283_Kawagoe_ranking_games(Japan)

SATAKE Yosuke	36-28	KOSHINO Kazuhiko
UMEDA Yuwa	60-04	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	YAMANAKA Masayuki
KURACHI Takayuki	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	SANO Yoko
KOSHINO Kazuhiko	39-25	YAMAMOTO Junya

2024-08-11: 225_Nagareyama_open(Japan)

YUUKI Kokujin	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	HASEGAWA Takeshi
NATSUKAWA Hikaru	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	OKUDA Tsuyoshi
ISHIKAWA Hikaru	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	SAKURADA Yuta

2024-08-04: 13_Kanagawa_cup(Japan)

KANEKO Hikaru	40-24	KOSHINO Kazuhiko
TANIDA Kunihiko	61-03	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	INOUE Masaru
NAGAO Hiroto	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	NAGAO Kazuki

2024-07-28: 88_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	38-26	YAHAGIDA Yumeo
OHMORI Keita	35-29	KOSHINO Kazuhiko
TSUCHIGANE Link	55-09	KOSHINO Kazuhiko
HASEGAWA Takeshi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	YAMASHITA Kimiyo
UMEDA Yuwa	38-26	KOSHINO Kazuhiko

2024-07-07: 124_Kanagoe_open_B(Japan)

IWAKURA Hiroaki	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	IIDA Kanata
SAITO Aya	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	SUZUKI Kenji
KOSHINO Kazuhiko	37-27	NAGATSUKA Ibuki
TOKIWA Shuto	43-21	KOSHINO Kazuhiko

2024-06-30: 50_All_Japan_Tokyo_prelim_3(Japan)

KOSHINO Kazuhiko	45-19	MEISHO Shigeki
KOSHINO Kazuhiko	45-19	NISHIBAYASHI Touya
KOSHINO Kazuhiko	49-15	MARI Tsuga
URANO Kento	57-07	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	RIMUKEN Shuuto
MARI Hinata	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	MARI Tsuga

2024-06-23: 50_All_Japan_Tokyo_prelim_2(Japan)

KOSHINO Kazuhiko	35-29	URANO Kento
MARI Tsuga	39-25	KOSHINO Kazuhiko
NAGATSUKA Ibuki	35-29	KOSHINO Kazuhiko
MEISHO Shigeki	45-19	KOSHINO Kazuhiko
IWASHINA Ryosuke	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	NISHIBAYASHI Touya

2024-06-09: 50_All_Japan_Tokyo_prelim_1(Japan)

SHIMIZU Naoki	34-30	KOSHINO Kazuhiko
NAGATSUKA Ibuki	40-24	KOSHINO Kazuhiko
IWAKURA Hiroaki	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	MEISHO Shigeki
TATSUMI-IIJIMA Yukiko	36-28	KOSHINO Kazuhiko
TAKAHASHI Hisashi	46-18	KOSHINO Kazuhiko

2024-03-03: 123_Kanagawa_open_B(Japan)

OHMORI Keita	37-27	KOSHINO Kazuhiko
NAGAO Hiroto	50-14	KOSHINO Kazuhiko
SUZURIKAWA Toshimasa	41-23	KOSHINO Kazuhiko
NAKAYAMA Takahiro	34-30	KOSHINO Kazuhiko
ITO Yuusaku	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	OHNO Atsuko

2024-02-18: 2024_Tokyo_expert_games(Japan)

KOSHINO Kazuhiko	58-06	SUYAMA Sosuke
NISHIBAYASHI Touya	48-16	KOSHINO Kazuhiko
NAKAJIMA Tetsuya	45-19	KOSHINO Kazuhiko
KIYONOBU Kenta	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	ITO Kotaro
KITAJIMA Hideki	34-30	KOSHINO Kazuhiko

2024-01-28: 85_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	36-28	OHUCHI Yasuhiro
OHMORI Keita	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KUDOU Keita
KOSHINO Kazuhiko	41-23	TSUCHIGANE Link
UMEDA Yuwa	44-20	KOSHINO Kazuhiko
KITAJIMA Hideki	38-26	KOSHINO Kazuhiko

2024-01-21: 279_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	58-06	NAITO Osahito
TSUCHIGANE Taishi	41-23	KOSHINO Kazuhiko
UMEDA Yuwa	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	TSUCHIGANE Link
KOSHINO Kazuhiko	59-05	KIMURA Kazuharu
KOMATSU Kanaharu	39-25	KOSHINO Kazuhiko

2024-01-07: 122_Kanagawa_open_B(Japan)

KOSHINO Kazuhiko	41-23	TAYAMA Tsubasa
KOSHINO Kazuhiko	40-24	UMEDA Yuwa
MITSUYA Nobuaki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	OKUDAIRA Fuyumi
IWAKURA Hiroaki	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	SUZURIKAWA Toshimasa

2023-12-10: 278_Kawagoe_ranking_games(Japan)

NAKAYAMA Takahiro	39-25	KOSHINO Kazuhiko
GOTO Akihiko	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	59-05	KAITA Mion
KOSHINO Kazuhiko	47-17	CHIBA Seima
KOSHINO Kazuhiko	53-11	OGINO Eita

2023-12-03: 35_Kawasaki_open(Japan)

OHMORI Keita	32-32	KOSHINO Kazuhiko
MEISHO Yuta	47-17	KOSHINO Kazuhiko
MATSUZAWA Atsushi	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	SUGUWARA Kiyoshi
KOSHINO Kazuhiko	35-29	OTANI Akimoto
KOSHINO Kazuhiko	39-25	IWAKURA Hiroaki

2023-11-19: 218_Nagareyama_open(Japan)

KOSHINO Kazuhiko	37-27	KOBAYASHI Manabu
KOSHINO Kazuhiko	50-14	IZUMI Takashi
NISHIBAYASHI Touya	35-29	KOSHINO Kazuhiko
TOKIWA Shuto	48-16	KOSHINO Kazuhiko
OKUDA Tsuyoshi	42-22	KOSHINO Kazuhiko
MEISHO Shigeki	33-31	KOSHINO Kazuhiko

2023-10-22: 49_All_Japan_Tokyo_prelim_2(Japan)

SHIROTA Yasuto	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	ATACHI Yoshio
TANIDA Kunihiko	40-24	KOSHINO Kazuhiko
TAKAHASHI Hisashi	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	MIYAMOTO Sukehiro
ANDO Maki	55-09	KOSHINO Kazuhiko

2023-09-17: 15_Chiba_open(Japan)

KOSHINO Kazuhiko	34-30	MIYAMOTO Taketora
IWATA Hiroyuki	39-25	KOSHINO Kazuhiko
SUGIYAMA Keisuke	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KOBAYASHI Manabu
KOSHINO Kazuhiko	51-13	NAKAMURA Kosuke
KOSHINO Kazuhiko	34-30	KANEKO Hikaru

2023-09-10: 276_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	50-14	OHNO Hayato
AOKI Daichi	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	GOTO Masahiro
YAMAMOTO Yuta	40-24	KOSHINO Kazuhiko
YAMANAKA Masayuki	48-16	KOSHINO Kazuhiko
TSUCHIGANE Link	44-20	KOSHINO Kazuhiko

2023-09-03: 120_Kanagawa_open_B(Japan)

MURAKAMI Takeshi	45-19	KOSHINO Kazuhiko
UMEDA Yuwa	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KADOKURA Taya
ITO Kotaro	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	TANAKA Chikako
KOSHINO Kazuhiko	34-30	YAMATO Ken

2023-08-20: 217_Nagareyama_open(Japan)

KOSHINO Kazuhiko	33-31	MIYAMOTO Taketora
HAYASAKA Toshie	53-11	KOSHINO Kazuhiko
TSUCHIGANE Link	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	CHIBA Seima
KOSHINO Kazuhiko	37-27	MIYAMOTO Sukehiro
OTANI Akimoto	52-12	KOSHINO Kazuhiko

2023-08-06: 12_Kanagawa_cup(Japan)

ONO Taiga	32-32	KOSHINO Kazuhiko
OGURA Ryutaro	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	NINA Musashi
HISHIYAMA Yuichi	36-28	KOSHINO Kazuhiko
TOKIWA Shuto	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	NAKAMURA Kosuke

2023-07-23: 82_Tatebayashi_open(Japan)

KAWAI Shinobu	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	YANO Yasushi
KOSHINO Kazuhiko	37-27	SUZUKI Youta
UMEDA Yuwa	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	CHIBA Seima
TSUCHIGANE Link	42-22	KOSHINO Kazuhiko

2023-07-09: 275_Kawago_ranking_games(Japan)

KOSHINO Kazuhiko	53-11	OHNO Hayato
KOSHINO Kazuhiko	37-27	GOTO Hiroshi
OGURA Ryutaro	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	OGINO Takeru
KOSHINO Kazuhiko	38-26	ODA Akari
TSUCHIGANE Taishi	45-19	KOSHINO Kazuhiko

2023-07-02: 119_Kanagawa_open_B(Japan)

TAKAHASHI Hisashi	44-20	KOSHINO Kazuhiko
NARIYA Makoto	46-18	KOSHINO Kazuhiko
OHNO Atsuko	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	MATSUYA Atsu
KOSHINO Kazuhiko	38-26	KIMURA Kazami
KOSHINO Kazuhiko	44-20	WATANABE Keiichi

2023-06-18: 274_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	49-15	ANPEI Togo
KOSHINO Kazuhiko	37-27	OTANI Akimoto
KIYONOBU Kenta	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	MIYAMOTO Taketora
KOSHINO Kazuhiko	42-22	YAMANAKA Masayuki
KOSHINO Kazuhiko	41-23	ODA Akari

2023-05-21: 81_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	57-07	MATSUBARA Yuto
HASEGAWA Takeshi	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	HACHIHATA Nobuyasu
KOSHINO Kazuhiko	43-21	IZUMI Takashi
ARAI Toshiko	45-19	KOSHINO Kazuhiko
GOTO Masahiro	49-15	KOSHINO Kazuhiko

2023-05-03: 214_Nagareyama_open(Japan)

NAGAO Hiroto	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	KAWADA Masaki
KOSHINO Kazuhiko	42-22	MIYAMOTO Taketora
KOSHINO Kazuhiko	55-09	WAKAMATSU Yuya
HASEGAWA Takeshi	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TSUCHIGANE Taishi

2023-04-23: 273_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	50-14	OHMORI Kotaro
KOSHINO Kazuhiko	39-25	TSUCHIGANE Taishi
GOTO Hiroshi	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	ONO Taiga
KAWAMURA Kiu	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	OHGA Nao

2023-03-05: 213_Nagareyama_open(Japan)

NAGANO Yasushi	41-23	KOSHINO Kazuhiko
SUZUKI Ryouta	39-25	KOSHINO Kazuhiko
YAMANAKA Masayuki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	MIYAKA Kanako
KOSHINO Kazuhiko	43-21	WATANABE Maki
MEISHO Shigeki	44-20	KOSHINO Kazuhiko

2023-02-12: 271_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	42-22	ONO Taiga
ISHIKAWA Akira	59-05	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	MEISHO Shigeki
OGURA Ryutaro	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TOMITA Yo
HASEGAWA Takeshi	32-32	KOSHINO Kazuhiko

2023-01-22: 270_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	41-23	TOMITA Yo
SANO Yoko	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	AKINAGA Yuto
UMEDA Yuwa	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	SHIGEMATSU Hajime
OGURA Ryutaro	36-28	KOSHINO Kazuhiko

2023-01-15: 212_Nagareyama_open(Japan)

SANO Joichiro	39-25	KOSHINO Kazuhiko
KINOSHITA Hisako	37-27	KOSHINO Kazuhiko
NISHIBAYASHI Touya	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	SANO Yoko
KOSHINO Kazuhiko	44-20	KOBAYASHI Manabu
KOSHINO Kazuhiko	34-30	YAMAMOTO Yuta

2022-12-04: 269_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	46-18	CHIBA Ichishige
KURACHI Takayuki	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TAJIMA Yoshimitsu
KOSHINO Kazuhiko	36-28	TOMITA Yo
KOSHINO Kazuhiko	40-24	ISHIDA Ren
KOSHINO Kazuhiko	34-30	TOKIWA Shuto

2022-03-21: 42_Meijin(Japan)

KOSHINO Kazuhiko	won against	KAGAWA Yoichi
KOSHINO Kazuhiko	won against	MIYAMOTO Taketora
SUZURIKAWA Toshimasa	won against	KOSHINO Kazuhiko
TAKIZAWA Masaki	won against	KOSHINO Kazuhiko
ISHIKAWA Akira	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SHINDO Aoba
TAKIZAWA Nobuyuki	won against	KOSHINO Kazuhiko

2022-03-20: 42_Meijin_masters(Japan)

ITAGAKI Kenichi	44-20	KOSHINO Kazuhiko
KOBAYASHI Manabu	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	ISHIKAWA Akira
HASEGAWA Takeshi	41-23	KOSHINO Kazuhiko

2019-10-20: 48_All_Japan_Tokyo_prelim_2(Japan)

KITAJIMA Hideki	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	IWAKURA Hiroaki
HISHIYAMA Yuichi	52-12	KOSHINO Kazuhiko
ISHIKAWA Akira	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	GO Shinu

2019-10-06: 48_All_Japan_Tokyo_prelim_1(Japan)

SUEKUNI Makoto	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	58-06	OGURA Ryutaro
TANIDA Kunihiko	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KAZUSUKE Rino
SAKAGUCHI Kazuhiro	36-28	KOSHINO Kazuhiko
ISHIKAWA Akira	44-20	KOSHINO Kazuhiko

2019-09-29: 2019_Yokohama_open(Japan)

KOSHINO Kazuhiko	34-30	TANAKA Chikako
KOSHINO Kazuhiko	46-18	TAYAMA Tsubasa
OGINO Takeru	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	ARASHIDA Shuntaro
KOSHINO Kazuhiko	34-30	RISAN
ADACHI Shungai	49-15	KOSHINO Kazuhiko

2019-09-23: 77_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	55-09	HORIE Ousei
KOSHINO Kazuhiko	62-02	YAMAZAKI Harumi
IWAKURA Hiroaki	36-28	KOSHINO Kazuhiko
AKAZU Tatsuya	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	ISOBE Masaki
WAKAYAMA Yusuke	42-22	KOSHINO Kazuhiko

2019-09-15: 19_Saitama_open(Japan)

KOSHINO Kazuhiko	36-28	KAWATA Musei
ISHIKAWA Hikaru	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	TOMI Kazuko
MATSUMOTO Makoto	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KAWABATA Seiji
GOTO Masahiro	44-20	KOSHINO Kazuhiko

2019-09-01: 114_Sendai_open(Japan)

GOTO Masahiro	32-32	KOSHINO Kazuhiko
KUDOU Yuusei	38-26	KOSHINO Kazuhiko
NAKAMORI Hiroki	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KATSUHISA Tomohiko
KOSHINO Kazuhiko	39-25	DOBASHI Yusuke
KOSHINO Kazuhiko	41-23	OGINO Takeru

2019-08-04: 10_Kanagawa_cup(Japan)

SATANI Tetsu	50-14	KOSHINO Kazuhiko
TAKANO Satoshi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	TATSUMI-IIJIMA Yukiko
IWAKURA Hiroaki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TSUTSUMI Ari
OSATO Suguru	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	TERAMOTO Oto

2019-07-07: 113_Kanagawa_open(Japan)

MURAKAMI Takeshi	52-12	KOSHINO Kazuhiko
TAKEDA Kyoko	46-18	KOSHINO Kazuhiko
TAKANO Satoshi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	OSBORNE Emma
KOSHINO Kazuhiko	50-14	TAYAMA Tsubasa
ITO Yuusaku	38-26	KOSHINO Kazuhiko

2019-06-16: 195_Nagareyama_open(Japan)

NAGASHIMA Kouyou	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	KASAI Yoshiyuki
OKUDA Tsuyoshi	59-05	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	NAGASHIMA Yoshitaka
MATSUMOTO Makoto	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	YADOMI Kousuke

2019-06-02: 33_Kawasaki_open(Japan)

KOSHINO Kazuhiko	47-17	ARASHIDA Shuntaro
HORIUCHI Soutarou	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	SAITO Aya
WATAHIKI Kenta	39-25	KOSHINO Kazuhiko
ITAGAKI Kenichi	34-30	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	34-30	KOSHINO Kazuhiko

2019-05-26: 36_Kawagoe_queen_prince(Japan)

KOSHINO Kazuhiko	55-09	TAJIMA Yoshimitsu
ISHIKAWA Akira	39-25	KOSHINO Kazuhiko
KURACHI Takayuki	36-28	KOSHINO Kazuhiko
HISHIYAMA Yuichi	44-20	KOSHINO Kazuhiko
MATSUMOTO Makoto	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	CHIBA Seima

2019-05-19: 194_Nagareyama_open(Japan)

KOSHINO Kazuhiko	49-15	NAKAMURA Shuichi
KOSHINO Kazuhiko	42-22	KAWAI Shinobu
KOSHINO Kazuhiko	36-28	ARAI Hiroyuki
NARA Souma	36-28	KOSHINO Kazuhiko
KOBAYASHI Manabu	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	YOKOSAWA Haruko

2019-05-12: 75_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	42-22	HARADA Hiraku
KOSHINO Kazuhiko	56-08	KAWAKAMI Eiichi
KOSHINO Kazuhiko	48-16	KAWAI Shinobu
TSUCHIGANE Link	33-31	KOSHINO Kazuhiko
HASEGAWA Takeshi	41-23	KOSHINO Kazuhiko
IWAKURA Hiroaki	35-29	KOSHINO Kazuhiko

2019-05-06: Kanto Shakaijin Championship(Japan)

KOSHINO Kazuhiko	53-11	MIWA Yujin
MURAKAMI Takeshi	50-14	KOSHINO Kazuhiko
HASEGAWA Takeshi	43-21	KOSHINO Kazuhiko
ITO Yuusaku	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	25-39	DE MARCO Wesley
TAKIGAWA Mitsuaki	38-26	KOSHINO Kazuhiko

2019-04-21: 27_Master_open(Japan)

HASEGAWA Takeshi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	TAKAHASHI Hisashi
KOSHINO Kazuhiko	34-30	TAJIMA Yoshimitsu
KOSHINO Kazuhiko	40-24	GOTO Masahiro
KURACHI Takayuki	34-30	KOSHINO Kazuhiko
ISHIKAWA Akira	42-22	KOSHINO Kazuhiko

2019-04-07: 7_Yokohama_challenge(Japan)

TATSUMI-IIJIMA Yukiko	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	NANASE Yuuma
ISOBE Masaki	60-04	KOSHINO Kazuhiko
KOSHINO Kazuhiko	56-08	TAKEDA Kyoko
NODA Bintatsu	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	YAMAGUCHI Tomoki

2019-03-31: 74_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	54-10	KONO Koudai
IWAKURA Hiroaki	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	WAKAYAMA Yusuke
KITANO Ochachi	38-26	KOSHINO Kazuhiko
OCHIAI Naofumi	34-30	KOSHINO Kazuhiko
MATSUMOTO Makoto	45-19	KOSHINO Kazuhiko

2019-03-24: 40_Meijin(Japan)

TAKANASHI Yusuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	MIYAMOTO Taketora
KIYONOBU Kenta	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	HARA Sousuke
KIKUCHI Takafumi	won against	KOSHINO Kazuhiko
FU Velma	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TSUCHIGANE Link

2019-03-23: 40_Meijin_masters(Japan)

UMEZAWA Yoshinori	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NODA Bintatsu
SUEKUNI Makoto	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAGUCHI Shinya
YAMAMOTO Kunihiro	won against	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	won against	KOSHINO Kazuhiko

2019-03-10: 259_Kawagoe_ranking_games(Japan)

HISHIYAMA Yuichi	32-32	KOSHINO Kazuhiko
IWAKURA Hiroaki	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KURACHI Takayuki
GOTO Hiroshi	39-25	KOSHINO Kazuhiko
SANO Kaoru	55-09	KOSHINO Kazuhiko

2019-03-03: 112_Kanagawa_open(Japan)

MATSUMOTO Makoto	35-29	KOSHINO Kazuhiko
NAKAOKA Akinori	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	WATANABE Keiichi
OGINO Takeru	35-29	KOSHINO Kazuhiko
TAKAHASHI Hisashi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	TAKAHASHI Takemarotoshi

2019-02-17: 2019_Tokyo_expert_games(Japan)

KOSHINO Kazuhiko	38-26	TAKAHASHI Hisashi
NAKAJIMA Tetsuya	33-31	KOSHINO Kazuhiko
IIJIMA Takamune	58-06	KOSHINO Kazuhiko
KOSHINO Kazuhiko	55-09	MONMA Naoto
IWAKURA Hiroaki	44-20	KOSHINO Kazuhiko

2019-01-27: 73_Tatebayashi_open(Japan)

YAMAMOTO Kunihiro	54-10	KOSHINO Kazuhiko
IZUMI Takashi	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	HARADA Hiraku
MURAKAMI Takeshi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	YAMANAKA Masayuki
MONMA Naoto	41-23	KOSHINO Kazuhiko

2019-01-20: 191_Nagareyama_open(Japan)

KOSHINO Kazuhiko	43-21	TOMI Kazuko
KOSHINO Kazuhiko	34-30	IWAKURA Hiroaki
MURAKAMI Takeshi	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	ISHIKAWA Hikaru
MATSUMOTO Makoto	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	TAKAHASHI Akinari

2019-01-14: 258_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	57-07	TAJIMA Isao
GOTO Hiroshi	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KURACHI Takayuki
KOSHINO Kazuhiko	41-23	TODA Tomoya
MURAKAMI Takeshi	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	MATSUMOTO Makoto

2019-01-06: 111_Kanagawa_open(Japan)

KOSHINO Kazuhiko	37-27	KANO Chihiro
KOSHINO Kazuhiko	34-30	TAYAMA Tsubasa
HORIUCHI Soutarou	34-30	KOSHINO Kazuhiko
OHMORI Keita	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	MIYAMOTO Taketora
OHIKE Yoshinori	37-27	KOSHINO Kazuhiko

2018-12-23: 190_Nagareyama_open(Japan)

KOSHINO Kazuhiko	43-21	TAKEDA Kyoko
YABE Uma	36-28	KOSHINO Kazuhiko
ITO Yuji	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KOBAYASHI Makoto
KOSHINO Kazuhiko	33-31	HISHIYAMA Yuichi
MURAKAMI Takeshi	48-16	KOSHINO Kazuhiko

2018-12-16: 257_Kawagoe_ranking_games(Japan)

HIEDA Shigemasa	41-23	KOSHINO Kazuhiko
HISHIYAMA Yuichi	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	ONOSHIMA Hiro
HORIUCHI Soutarou	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	FUJII Renya
KOSHINO Kazuhiko	46-18	YANO Yasushi

2018-12-02: 32_Kawasaki_open(Japan)

NODA Yuna	42-22	KOSHINO Kazuhiko
ISHIKAWA Hikaru	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	KANEKO Hikaru
NARIYA Makoto	55-09	KOSHINO Kazuhiko
GO Shinu	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	YAMAGUCHI Hironobu

2018-11-11: 256_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	42-22	MONMA Naoto
KOSHINO Kazuhiko	41-23	ISHIDA Kazuaki
GOTO Hiroshi	33-31	KOSHINO Kazuhiko
TODA Tomoya	33-31	KOSHINO Kazuhiko
HISHIYAMA Yuichi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	NANASE Yuuma

2018-11-04: 47_All_Japan_Tokyo_prelim_2(Japan)

MURAKAMI Takeshi	54-10	KOSHINO Kazuhiko
ASOU Daisuke	38-26	KOSHINO Kazuhiko
KOMAGATA Masayuki	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAJIMA Isao
KUWAHARA Shuhei	39-25	KOSHINO Kazuhiko

2018-10-21: 47_All_Japan_Tokyo_prelim_1(Japan)

MURAKAMI Takeshi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	HISHIYAMA Yuichi
KIYONOBU Kenta	37-27	KOSHINO Kazuhiko
ASOU Daisuke	49-15	KOSHINO Kazuhiko
TAKAHASHI Hisashi	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TAMAKI Shingo

2018-09-30: 2018_Yokohama_open(Japan)

KOSHINO Kazuhiko	34-30	KOBAYASHI Ayumi
MONMA Naoto	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	TOMITO Hikari
ITO Kenshun	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	OHMORI Kousuke
HORIUCHI Soutarou	47-17	KOSHINO Kazuhiko

2018-09-23: 18_Saitama_open(Japan)

KOSHINO Kazuhiko	39-25	ITO Kazuma
KOSHINO Kazuhiko	34-30	FURUMOTO Yuki
MURAKAMI Takeshi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	NARUMI Hisatoshi
KURACHI Takayuki	43-21	KOSHINO Kazuhiko
OHMORI Keita	35-29	KOSHINO Kazuhiko

2018-09-17: 71_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	45-19	KAWAI Shinobu
SATO Koichiro	43-21	KOSHINO Kazuhiko
KOBAYASHI Manabu	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	MATSUMOTO Makoto
IWAKURA Hiroaki	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	TSUCHIGANE Taishi

2018-09-09: 14_Chiba_open(Japan)

KOBAYASHI Manabu	38-26	KOSHINO Kazuhiko
TAKAMIZAWA Daiki	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	FUNAHIKI Tomiko
NARUMI Hisatoshi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	62-02	SEKINE Taku
OHNO Tomohiro	47-17	KOSHINO Kazuhiko

2018-08-12: 188_Nagareyama(Japan)

KOSHINO Kazuhiko	37-27	NANASE Yuuma
SATO Koichiro	41-23	KOSHINO Kazuhiko
SANO Joichiro	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	INOMATA Daichi
ISHIDA Ren	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KITAMURA Momona

2018-08-11: 7_Tokyo_open(Japan)

KOSHINO Kazuhiko	56-08	OKISO Reita
ITO Yuji	45-19	KOSHINO Kazuhiko
ISOBE Masaki	53-11	KOSHINO Kazuhiko
OHMORI Keita	36-28	KOSHINO Kazuhiko
ITO Kenshun	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TAYAMA Tsubasa

2018-08-05: 9_Kanagawa_cup(Japan)

KOSHINO Kazuhiko	39-25	MURAKAMI Takeshi
KOSHINO Kazuhiko	33-31	TAKA Hirosuke
WATAHIKI Kenta	37-27	KOSHINO Kazuhiko
NAGAO Hiroto	38-26	KOSHINO Kazuhiko
ADACHI Shungai	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KASAI Yoshiyuki
IWAKURA Hiroaki	44-20	KOSHINO Kazuhiko

2018-07-22: 70_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	48-16	YANO Yasushi
ISHIDA Ren	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	HASEGAWA Takeshi
DOBASHI Yusuke	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	62-02	UENO Ukie
KOSHINO Kazuhiko	52-12	YAMANAKA Masayuki

2018-07-08: 187_Nagareyama(Japan)

KOSHINO Kazuhiko	33-31	NAMAZU Yuki
YAMANAKA Masayuki	35-29	KOSHINO Kazuhiko
HAYASAKA Toshie	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	NODA Yuna
MATSUMOTO Makoto	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	HACHIHATA Nobuyasu

2018-06-17: 46_All_Japan_Tokyo_prelim_2(Japan)

YAMAKAWA Takashi	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	MONMA Naoto
KAMIKURA Daisuke	won against	KOSHINO Kazuhiko
NAKAZAWA Junichi	44-20	KOSHINO Kazuhiko
OSHIMA Yusuke	41-23	KOSHINO Kazuhiko

2018-06-03: 46_All_Japan_Tokyo_prelim_1(Japan)

KIYONOBU Kenta	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KOMAGATA Masayuki
KITAJIMA Hideki	38-26	KOSHINO Kazuhiko
ISHIDA Kazuaki	34-30	KOSHINO Kazuhiko
KUWAHARA Shuhei	49-15	KOSHINO Kazuhiko
ISHIKAWA Akira	35-29	KOSHINO Kazuhiko

2018-04-22: 26_Master_open(Japan)

KOSHINO Kazuhiko	40-24	HASEGAWA Takeshi
KOSHINO Kazuhiko	44-20	YAMAMOTO Kunihiro
MATSUMOTO Makoto	32-32	KOSHINO Kazuhiko
ISHIKAWA Akira	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	GOTO Masahiro
TAKIGAWA Mitsuaki	50-14	KOSHINO Kazuhiko

2018-04-15: 185_Nagareyama_open(Japan)

WATAHIKI Kenta	47-17	KOSHINO Kazuhiko
HACHIHATA Nobuyasu	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	KIMURA Rion
KOSHINO Kazuhiko	41-23	MORIKAWA Haruhito
KOSHINO Kazuhiko	49-15	KAWAKAMI Eiichi
KOSHINO Kazuhiko	41-23	ISHII Takamasa

2018-04-01: 6_Yokohama_challenge(Japan)

TAKIGAWA Mitsuaki	43-21	KOSHINO Kazuhiko
MATSUMOTO Makoto	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	56-08	TANAKA Chikako
TAKAMIZAWA Daiki	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	TAYAMA Tsubasa
NODA Bintatsu	36-28	KOSHINO Kazuhiko

2018-03-25: 68_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	58-06	NAKAO Ryuujirou
KOSHINO Kazuhiko	41-23	YAMANAKA Masayuki
MATSUMOTO Makoto	40-24	KOSHINO Kazuhiko
OHUCHI Yasuhiro	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	56-08	KOYANAGI Tomoki
KOSHINO Kazuhiko	34-30	HASEGAWA Takeshi

2018-03-11: 254_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	54-10	KAWAKAMI Eiichi
KURACHI Takayuki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	WADA Chiaki
KAMIKURA Daisuke	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	OHNO Atsuko
GOTO Masahiro	42-22	KOSHINO Kazuhiko

2018-02-25: 67_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	49-15	KAWAKAMI Eiichi
KOSHINO Kazuhiko	51-13	MONMA Naoto
HASEGAWA Takeshi	56-08	KOSHINO Kazuhiko
GOTO Masahiro	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	TERANISHI Shinryuu
MATSUMOTO Makoto	40-24	KOSHINO Kazuhiko

2018-01-28: 253_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	43-21	SAWA Hiroto
HASEGAWA Takeshi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	YANO Yasushi
KURACHI Takayuki	42-22	KOSHINO Kazuhiko
AKAGI Tachiro	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	KAWAKAMI Eiichi

2018-01-07: 106_Kanagawa_open(Japan)

NAGASHIMA Kouyou	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	GO Shinu
TATSUMI-IIJIMA Yukiko	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	KAWABATA Seiji
KOSHINO Kazuhiko	38-26	ITO Yuji
KITAJIMA Hideki	48-16	KOSHINO Kazuhiko

2017-12-23: 132_Shinagawa_open(Japan)

KOSHINO Kazuhiko	58-06	KUWAHARA Shuhei
OSATO Suguru	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	MITSUYA Nobuaki
TSUCHIYA Shotaro	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	ITO Kenshun
TAKAMIZAWA Daiki	54-10	KOSHINO Kazuhiko

2017-12-17: 252_Kawagoe_ranking_games(Japan)

TAKAHASHI Shiu	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	KAWAKAMI Eiichi
KUWAHARA Shuhei	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KITANO Takumi
KOSHINO Kazuhiko	37-27	YANO Yasushi

2017-12-03: 30_Kawasaki_open(Japan)

NODA Bintatsu	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	MATSUMOTO Makoto
KOSHINO Kazuhiko	33-31	TAKAHASHI Shiu
KOSHINO Kazuhiko	35-29	SASAKI Yasuyuki
KOSHINO Kazuhiko	35-29	ITAGAKI Kenichi
HISHIYAMA Yuichi	38-26	KOSHINO Kazuhiko

2017-11-23: 66_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	46-18	SEKINE Taku
KOSHINO Kazuhiko	64-00	YANO Yasushi
KOSHINO Kazuhiko	45-19	GOTO Masahiro
OHUCHI Yasuhiro	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	61-03	KAKINUMA Renma
KOSHINO Kazuhiko	37-27	HASEGAWA Takeshi

2017-11-05: 105_Kanagawa_open(Japan)

NAKANO Jo	37-27	KOSHINO Kazuhiko
IWAKURA Hiroaki	40-24	KOSHINO Kazuhiko
NAKAMURA Kazuki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	GO Shinu
OGINO Takeru	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KOJIMA Akiyasu

2017-10-08: 251_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	35-29	HASEGAWA Takeshi
NANASE Yuuma	40-24	KOSHINO Kazuhiko
TAKAHASHI Shiu	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	SUZUKI Kenji
KOSHINO Kazuhiko	38-26	NAKAMURA Kazuki
KOSHINO Kazuhiko	32-32	GOTO Hiroshi

2017-09-24: 13_Shiba_open(Japan)

KOSHINO Kazuhiko	38-26	SAWADA Takehiko
KOSHINO Kazuhiko	42-22	ISHII Takamasa
KOSHINO Kazuhiko	45-19	TAKAHASHI Hisashi
HAYASAKA Toshie	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	NARUMI Hisatoshi
KOSHINO Kazuhiko	36-28	FUNATSU Asuka

2017-09-23: 129_Shinagawa_open(Japan)

KOSHINO Kazuhiko	50-14	SUZUKI Kousei
MURAKAMI Takeshi	43-21	KOSHINO Kazuhiko
NAGASAKI Hidekazu	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	OHNO Atsuko
KOSHINO Kazuhiko	49-15	NANASE Yuuma
KOSHINO Kazuhiko	43-21	KUWAHARA Shuhei

2017-09-18: 17_Saitama_open(Japan)

KOSHINO Kazuhiko	58-06	OOKURO Hirotomo
IZURA Daisei	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	60-04	BASHOUMATSU Hideaki
KOSHINO Kazuhiko	39-25	KITIGAWA Mami
SATO Koichiro	42-22	KOSHINO Kazuhiko
TAKIGUCHI Masaharu	34-30	KOSHINO Kazuhiko

2017-09-17: 2017_Yokohama_open(Japan)

YAMADA Kazuko	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	ONISHI Kaoru
MABUCHI Yuta	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAYAMA Tsubasa
SUZUKI Kenji	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	SUGIYAMA Akira

2017-08-27: 104_Kanagawa_open(Japan)

HISHIYAMA Yuichi	39-25	KOSHINO Kazuhiko
OSATO Suguru	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	58-06	NODA Yuna
ISHIGURO Hiroki	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	KADOKURA Taya
KOSHINO Kazuhiko	42-22	YAMAGUCHI Tomoki

2017-08-20: 180_Nagareyama_open(Japan)

KOSHINO Kazuhiko	44-20	OHTSUBO Kai
MATSUMOTO Makoto	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	TAKAHASHI Toshi
KOSHINO Kazuhiko	48-16	KOBAYASHI Makoto
SATO Koichiro	40-24	KOSHINO Kazuhiko
SHINDO You	45-19	KOSHINO Kazuhiko

2017-08-06: 8_Kanagawa_cup(Japan)

ITAGAKI Kenichi	45-19	KOSHINO Kazuhiko
NAKAMURA Rintaro	47-17	KOSHINO Kazuhiko
TAKAHASHI Shiu	41-23	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TAKEDA Kyoko
KOSHINO Kazuhiko	37-27	IWAKURA Hiroaki
KOSHINO Kazuhiko	38-26	KUDOU Yuusei

2017-07-30: 64_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	34-30	SUZUKI Shigenari
IWAKURA Hiroaki	49-15	KOSHINO Kazuhiko
OKUDA Tsuyoshi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	NAGATSUKA Ibuki
SATO Koichiro	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	KAKINUMA Renma

2017-07-09: 179_Nagareyama_open(Japan)

KOSHINO Kazuhiko	45-19	TAKAHASHI Akinari
WATANABE Keiichi	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	HORIUCHI Keiko
WADA Masaki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TOMI Kazuko
KOSHINO Kazuhiko	54-10	MATSUMOTO Makoto

2017-07-02: 103_Kanagawa_open(Japan)

TATSUMI-IIJIMA Yukiko	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	SHINDO Aoba
GOTO Masahiro	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	55-09	TAKEDA Kyoko
MATSUMOTO Makoto	34-30	KOSHINO Kazuhiko
IWAKURA Hiroaki	49-15	KOSHINO Kazuhiko

2017-06-18: 45_All_Japan_Tokyo_prelim_2(Japan)

KOSHINO Kazuhiko	38-26	YAMAZAKI Nobuyuki
KAMIKURA Daisuke	36-28	KOSHINO Kazuhiko
IWAKURA Hiroaki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	OHTSUBO Masayuki
URANO Kento	61-03	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	IGARASHI Jun

2017-06-04: 45_All_Japan_Tokyo_prelim_1(Japan)

KOSHINO Kazuhiko	35-29	KAMIKURA Daisuke
KITAJIMA Hideki	36-28	KOSHINO Kazuhiko
IWATA Hiroyuki	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KOIDE Satoshi
URANO Kento	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	KOMAGATA Masayuki

2017-05-28: 29_Kawasaki_open(Japan)

YAMAMOTO Takashi	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	NAKAMURA Kazuki
KOSHINO Kazuhiko	62-02	OOTAGAKI Takuma
ITAGAKI Kenichi	37-27	KOSHINO Kazuhiko
SASAKI Kousuke	38-26	KOSHINO Kazuhiko
NAKAMURA Rintaro	39-25	KOSHINO Kazuhiko

2017-05-21: 63_Tatebayashi_open(Japan)

YAMAMOTO Kunihiro	33-31	KOSHINO Kazuhiko
MATSUMOTO Makoto	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	58-06	KAKINUMA Renma
KOSHINO Kazuhiko	46-18	KAKINUMA Yuichirou
KOSHINO Kazuhiko	43-21	HASEGAWA Takeshi
KOSHINO Kazuhiko	39-25	MATSUMOTO Makoto

2017-05-03: 178_Nagareyama_open(Japan)

KOSHINO Kazuhiko	42-22	ISHIKAWA Akira
KOSHINO Kazuhiko	50-14	MORIKAWA Haruhito
KOSHINO Kazuhiko	38-26	SAWADA Takehiko
MURAKAMI Takeshi	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	NARA Souma
OHNO Tomohiro	46-18	KOSHINO Kazuhiko

2017-04-29: 5_Tokyo_open(Japan)

SEKINE Taku	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	IZURA Daisei
NAKAMURA Kazuki	53-11	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	53-11	KOSHINO Kazuhiko
NAKAMURA Keiichiro	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KAJIAWA Shuji

2017-04-23: 25_Master_open(Japan)

KOSHINO Kazuhiko	33-31	ISHIKAWA Akira
MATSUMOTO Makoto	32-32	KOSHINO Kazuhiko
GOTO Masahiro	36-28	KOSHINO Kazuhiko
HASEGAWA Takeshi	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	TAKIGAWA Mitsuaki
ITAGAKI Kenichi	36-28	KOSHINO Kazuhiko

2017-04-02: 5_Yokohama_challenge(Japan)

YAMAMOTO Takashi	40-24	KOSHINO Kazuhiko
KITANO Takumi	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	ISHIGURO Hiroki
KOSHINO Kazuhiko	40-24	NAGAO Hiroto
KOBAYASHI Manabu	36-28	KOSHINO Kazuhiko
NAKAMURA Kazuki	41-23	KOSHINO Kazuhiko

2017-03-05: 102_Kanagawa_open(Japan)

KOSHINO Kazuhiko	38-26	HAYASAKA Toshie
KOSHINO Kazuhiko	39-25	KITANO Takumi
FUKUCHI Keisuke	56-08	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	SAITO Aya
NAGAO Hiroto	38-26	KOSHINO Kazuhiko
MITSUYA Nobuaki	44-20	KOSHINO Kazuhiko

2017-02-11: 113_Chiyarenshi_intermediate(Japan)

KOSHINO Kazuhiko	37-27	SHINDO You
KOSHINO Kazuhiko	40-24	SUGIMOTO Takaharu
NAKAMURA Kazuki	53-11	KOSHINO Kazuhiko
ONUKI Yutaka	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	NAKAMURA Rintaro
ITSUKI Hayashi	36-28	KOSHINO Kazuhiko

2017-01-22: 2017_Tokyo_expert_games(Japan)

YAMAMOTO Takashi	57-07	KOSHINO Kazuhiko
OSHIMA Yusuke	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	ATOBE Shuugo
MURAKAMI Takeshi	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAKAHASHI Hisashi

2017-01-08: 101_Kanagawa_open(Japan)

LIN WEI HAO Roy	50-14	KOSHINO Kazuhiko
HAYASAKA Toshie	53-11	KOSHINO Kazuhiko
OHNO Atsuko	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	KAJIAWA Shuji
KOSHINO Kazuhiko	38-26	WATANABE Keiichi
KOSHINO Kazuhiko	40-24	TAYAMA Tsubasa

2017-01-03: Shinagawa_open_2017(Japan)

KOSHINO Kazuhiko	61-03	SAKAMOTO Haruya
KAWABATA Seiji	won against	KOSHINO Kazuhiko
NAGISA Shougo	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	OHTAKE Kosuke
SUEKUNI Makoto	42-22	KOSHINO Kazuhiko
YAMAMOTO Ida	42-22	KOSHINO Kazuhiko
MITSUYA Nobuaki	43-21	KOSHINO Kazuhiko

2016-12-18: 248_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	33-31	YAMAMOTO Kunihiro
NAKAMURA Rintaro	36-28	KOSHINO Kazuhiko
SAJI Kouya	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	ISHIDA Kazuaki
KOSHINO Kazuhiko	33-31	HASEGAWA Takeshi
NAKAMURA Kazuki	39-25	KOSHINO Kazuhiko

2016-12-04: 28_Kawasaki_open(Japan)

TAYAMA Tsubasa	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	KAJIAWA Shuji
NAKAMURA Kazuki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	SHINDO Aoba
TAKAHASHI Hisashi	33-31	KOSHINO Kazuhiko

2016-11-23: 60_Tatebayashi_open(Japan)

OHUCHI Yasuhiro	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	KATAGIRI Tomotaka
KOSHINO Kazuhiko	39-25	IWAKURA Hiroaki
KOSHINO Kazuhiko	40-24	OKUDA Tsuyoshi
KOSHINO Kazuhiko	52-12	YAMAMOTO Kunihiro
YANO Yasushi	49-15	KOSHINO Kazuhiko

2016-11-20: 137_Nagareyama_open(Japan)

FUNATSU Asuka	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	KOBAYASHI Manabu
KOSHINO Kazuhiko	46-18	NISHIMURA Haruna
ISHIKAWA Hikaru	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SHIMIZU Ryusei
IZUMI Takashi	35-29	KOSHINO Kazuhiko

2016-10-30: 100_Kanagawa_open(Japan)

KITANO Ochachi	50-14	KOSHINO Kazuhiko
TAKAHASHI Shiu	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	SHIFMAN Leonid
MATSUYA Shinpei	35-29	KOSHINO Kazuhiko
KASHIWABARA Takuji	54-10	KOSHINO Kazuhiko

2016-10-23: 247_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	40-24	MATSUMOTO Makoto
HASEGAWA Takeshi	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	GOTO Hiroshi
KOSHINO Kazuhiko	33-31	KURACHI Takayuki
KOSHINO Kazuhiko	39-25	GOTO Masahiro
ISHIKAWA Hikaru	41-23	KOSHINO Kazuhiko

2016-09-25: 12_Chiba_open(Japan)

TSUCHIYA Shotaro	60-04	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	SHIMA Itoko
KOSHINO Kazuhiko	36-28	NISHIMURA Haruna
ISOBE Masaki	35-29	KOSHINO Kazuhiko
ISHII Takamasa	33-31	KOSHINO Kazuhiko
EGUTI Kotoha	46-18	KOSHINO Kazuhiko

2016-09-18: 2016_Yokohama_open(Japan)

TAYAMA Tsubasa	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	ONUKI Yutaka
KOSHINO Kazuhiko	34-30	ISHII Kentarou
SAJI Kouya	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	WATANABE Keiichi
KOSHINO Kazuhiko	34-30	OSATO Suguru

2016-08-28: 99_Kanagawa_open(Japan)

TAKANASHI Yusuke	39-25	KOSHINO Kazuhiko
MORII Takumi	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	GOTO Ohachi
TAYAMA Tsubasa	51-13	KOSHINO Kazuhiko
SASAKI Yasuyuki	45-19	KOSHINO Kazuhiko
IKEDA Atsuhiko	34-30	KOSHINO Kazuhiko

2016-08-07: 7_Kanagawa_cup(Japan)

NAKANO Jo	38-26	KOSHINO Kazuhiko
SAJI Kouya	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	OHNO Atsuko
YAMAZAKI Nobuyuki	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	ITAGAKI Kenichi
KOSHINO Kazuhiko	45-19	IKEDA Atsuhiko
NAKAMURA Kazuki	34-30	KOSHINO Kazuhiko

2016-07-10: 58_Tatebayashi_open(Japan)

URUSHIHARA Kazuhiro	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	GOTO Masahiro
IWAKURA Hiroaki	56-08	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	KOBAYASHI Mai
MATSUMOTO Makoto	51-13	KOSHINO Kazuhiko
MIURA Toshie	36-28	KOSHINO Kazuhiko

2016-07-03: 98_Kanagawa_open(Japan)

TAYAMA Tsubasa	47-17	KOSHINO Kazuhiko
IKEDA Atsuhiko	35-29	KOSHINO Kazuhiko
OSATO Suguru	49-15	KOSHINO Kazuhiko
SHIMIZU Ryusei	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TAKEDA Kyoko

2016-06-19: 44_All_Japan_Tokyo_prelim_2(Japan)

ISHIKAWA Akira	53-11	KOSHINO Kazuhiko
TAKAMIZAWA Daiki	40-24	KOSHINO Kazuhiko
KOMAGATA Masayuki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	KATSURA Hisatoshi
KOSHINO Kazuhiko	39-25	IWAKURA Hiroaki
KOSHINO Kazuhiko	49-15	NAKAMURA Kazuki

2016-06-05: 44_All_Japan_Tokai_prelim_1(Japan)

KOSHINO Kazuhiko	41-23	ASOU Daisuke
TANIDA Kunihiko	40-24	KOSHINO Kazuhiko
MURAKAMI Takeshi	50-14	KOSHINO Kazuhiko
ISHIKAWA Akira	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	SASAKI Kousuke
KOSHINO Kazuhiko	52-12	YAMAZAKI Nobuyuki

2016-05-22: 32_Kawagoe_queen_prince(Japan)

KOSHINO Kazuhiko	35-29	HISHIYAMA Yuichi
ISHIKAWA Hikaru	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KASAHARA Kohei
KOSHINO Kazuhiko	33-31	GOTO Masahiro
TAYAMA Tsubasa	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KURACHI Takayuki

2016-05-08: 169_Nagareyama_open(Japan)

NARUMI Hisatoshi	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	TOMI Kazuko
MABUCHI Yuta	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	ISHII Takamasa
OHTAKE Kosuke	won against	KOSHINO Kazuhiko
EGUTI Kotoha	38-26	KOSHINO Kazuhiko

2016-04-29: 4_Tokyo_open(Japan)

YAMAMOTO Takashi	35-29	KOSHINO Kazuhiko
ISHII Takehiro	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	NAKAMURA Rintaro
TAKIGAWA Mitsuaki	42-22	KOSHINO Kazuhiko
ISHIKAWA Akira	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	WADA Chiaki

2016-04-24: 24_Master_open(Japan)

MATSUMOTO Makoto	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KATORI Michihiro
GOTO Masahiro	38-26	KOSHINO Kazuhiko
MATSUMOTO Makoto	38-26	KOSHINO Kazuhiko
KATORI Michihiro	36-28	KOSHINO Kazuhiko
GOTO Masahiro	35-29	KOSHINO Kazuhiko

2016-04-17: 168_Nagareyama_open(Japan)

OKUDA Tsuyoshi	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	NARUMI Hisatoshi
YAMAKAWA Takashi	37-27	KOSHINO Kazuhiko
KIKUCHI Takafumi	34-30	KOSHINO Kazuhiko
FUNATSU Asuka	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	TOMI Kazuko

2016-04-03: 4_Yokohama_challenge(Japan)

KOSHINO Kazuhiko	37-27	NAKANO Jo
KOSHINO Kazuhiko	51-13	GOTO Masahiro
ITAGAKI Kenichi	43-21	KOSHINO Kazuhiko
KITANO Ochachi	42-22	KOSHINO Kazuhiko
TOMINAGA Kenta	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	TATSUMI-IIJIMA Yukiko

2016-03-27: 245_Kawagoe_ranking_games(Japan)

NAKAMURA Kazuki	48-16	KOSHINO Kazuhiko
ISHIDA Ren	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	TOMI Kazuko
KOSHINO Kazuhiko	33-31	TANI Katsuya
KOSHINO Kazuhiko	50-14	TOKUDA Naoya
NAKAMORI Chiaki	40-24	KOSHINO Kazuhiko

2016-03-13: 56_Tatebayashi_open(Japan)

KITANO Takumi	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	SUZUKI Kenji
MATSUMOTO Makoto	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	KAWASAKI Akito
KOSHINO Kazuhiko	35-29	GOTO Masahiro
KOSHINO Kazuhiko	54-10	NAKAJIMA Shun

2016-03-06: 97_Kanagawa_open(Japan)

KOSHINO Kazuhiko	32-32	KOMAGATA Masayuki
SASAKI Kousuke	37-27	KOSHINO Kazuhiko
MATSUMOTO Makoto	35-29	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	41-23	KOSHINO Kazuhiko
ISHIKAWA Hikaru	44-20	KOSHINO Kazuhiko

2016-02-07: 2016_Tokyo_expert_games(Japan)

KOSHINO Kazuhiko	42-22	TANIDA Kunihiko
URANO Kento	42-22	KOSHINO Kazuhiko
SHIRAI Ukyo	36-28	KOSHINO Kazuhiko
KIYONOBU Kenta	51-13	KOSHINO Kazuhiko
ISHIKAWA Akira	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	NAKAMURA Kazuki

2016-01-17: 167_Nagareyama_open(Japan)

KOSHINO Kazuhiko	37-27	ISOBE Masaki
TAKAHASHI Hisashi	39-25	KOSHINO Kazuhiko
KATORI Michihiro	37-27	KOSHINO Kazuhiko
HAYASAKA Toshie	35-29	KOSHINO Kazuhiko
MABUCHI Yuta	38-26	KOSHINO Kazuhiko

2016-01-10: 96_Kanagawa_open(Japan)

TATSUMI-IIJIMA Yukiko	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	HAYASAKA Toshie
NARA Souma	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	FUKUI Hiroto
SUGUWARA Kiyoshi	39-25	KOSHINO Kazuhiko
ISHIKAWA Akira	40-24	KOSHINO Kazuhiko

2016-01-03: Shinagawa_open_2016(Japan)

KOSHINO Kazuhiko	34-30	HAGIKURA Yutaka
KURIHARA Aru	58-06	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KAWABATA Seiji
ISOBE Masaki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	HAYASAKA Toshie
KOSHINO Kazuhiko	35-29	SHIRAI Ukyo

2015-12-23: 166_Nagareyama_open(Japan)

KOSHINO Kazuhiko	46-18	OKAMURA Anetsu
OKUDA Tsuyoshi	35-29	KOSHINO Kazuhiko
IKEDA Atsuhiko	33-31	KOSHINO Kazuhiko
NARUMI Hisatoshi	42-22	KOSHINO Kazuhiko
TOMI Kazuko	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KOBAYASHI Manabu

2015-12-20: 244_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	64-00	IGARASHI Risa
MATSUMOTO Makoto	34-30	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	ISHIKAWA Hikaru
TAKAHASHI Hisashi	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	KOJIMA Kazunori

2015-12-06: 26_Kawasaki_open(Japan)

KOSHINO Kazuhiko	48-16	OHNO Atsuko
IKEDA Atsuhiko	48-16	KOSHINO Kazuhiko
YAMAMOTO Takashi	47-17	KOSHINO Kazuhiko
NARUMI Hisatoshi	39-25	KOSHINO Kazuhiko
YAMADA Kazuko	34-30	KOSHINO Kazuhiko
TSUCHIYA Ryosuke	50-14	KOSHINO Kazuhiko

2015-11-29: 165_Nagareyama_open(Japan)

MURAKAMI Takeshi	33-31	KOSHINO Kazuhiko
OKUDA Tsuyoshi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	TAKAHASHI Shiu
TAKAHASHI Hisashi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	GOTO Masahiro
HAYASAKA Toshie	45-19	KOSHINO Kazuhiko

2015-11-08: 54_Tatebayashi_open(Japan)

ISHIKAWA Akira	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	SATO Emiko
KOSHINO Kazuhiko	40-24	KAWASAKI Akito
KOSHINO Kazuhiko	41-23	ABE Kumiko
MATSUMOTO Makoto	33-31	KOSHINO Kazuhiko
OKUDA Tsuyoshi	33-31	KOSHINO Kazuhiko

2015-11-01: 95_Kanagawa_open(Japan)

KOMAGATA Masayuki	49-15	KOSHINO Kazuhiko
OKAMURA Anetsu	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	IKEDA Atsuhiko
KOSHINO Kazuhiko	46-18	YAMAKAWA Yasuo
KIYONOBU Kenta	33-31	KOSHINO Kazuhiko

2015-10-25: 243_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	34-30	MATSUMOTO Makoto
HISHIYAMA Yuichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TAKEDA Kyoko
TAYAMA Tsubasa	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	OKASHIWA Daiki

2015-09-27: 2015_Yokohama_open(Japan)

KOSHINO Kazuhiko	53-11	NAKAMURA Rintaro
HISHIYAMA Yuichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	KAJIAWA Shuji
YAMAMOTO Takashi	39-25	KOSHINO Kazuhiko
SHIRAI Ukyo	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	YAMADA Kazuko

2015-09-23: 53_Tatebayashi_open(Japan)

HISHIYAMA Yuichi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KASAHARA Kohei
ISHIKAWA Akira	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	OCHIAI Naofumi
KOSHINO Kazuhiko	34-30	KITANO Takumi
TAKAHASHI Hisashi	33-31	KOSHINO Kazuhiko

2015-09-21: 15_Saitama_open(Japan)

KOSHINO Kazuhiko	38-26	OCHIAI Naofumi
KURIHARA Aru	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	IWASAWA Junya
NARUMI Hisatoshi	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	TACHIKI Akira
URANO Kento	48-16	KOSHINO Kazuhiko

2015-09-21: 242_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	50-14	SUGIYAMA Yoshiaki
TAKASAKI Shohei	41-23	KOSHINO Kazuhiko
KUROIWA Atsuhiro	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	NARITA Shunsuke
KOBAYASHI Manabu	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	YAMAKAWA Yasuo

2015-09-20: 11_Chiba_open(Japan)

OKUDA Tsuyoshi	55-09	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	ISHII Takamasa
KOSHINO Kazuhiko	44-20	MURO Yuya
HISHIYAMA Yuichi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	MATSUMOTO Makoto
KOSHINO Kazuhiko	37-27	ISOBE Masaki

2015-08-30: 94_Kanagawa_open(Japan)

KOSHINO Kazuhiko	44-20	TAKEDA Kyoko
KOSHINO Kazuhiko	37-27	KASAI Masaya
ASAHINA Satoshi	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	HAYASAKA Toshie
TESAKI Satoru	42-22	KOSHINO Kazuhiko

2015-08-09: 163_Nagareyama_open(Japan)

ITO Junya	42-22	KOSHINO Kazuhiko
AKAIKE Hide	35-29	KOSHINO Kazuhiko
FUNATSU Asuka	39-25	KOSHINO Kazuhiko
SUZUKI Kenji	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	ISHII Takehiro

2015-08-02: 6_Kanagawa_cup(Japan)

NAGAO Hiroto	39-25	KOSHINO Kazuhiko
TAKEDA Kyoko	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	KOBAYASHI Manabu
MABUCHI Yuta	37-27	KOSHINO Kazuhiko
MITSUYA Nobuaki	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	TAYAMA Tsubasa

2015-07-19: 43_All_Japan_championship(Japan)

KOSHINO Kazuhiko	won against	TATEYANAGI Miki
UNO Toshihiro	won against	KOSHINO Kazuhiko
KOSHIRO Ryuta	won against	KOSHINO Kazuhiko
KUMA Mitsuo	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	HIRASHIMA Naoki
MATSUI Takashi	won against	KOSHINO Kazuhiko

2015-07-05: 93_Kanagawa_open(Japan)

KOSHINO Kazuhiko	37-27	KAMATANI Akihiro
SUEKUNI Makoto	50-14	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	TAKEDA Kyoko
SHIRAI Ukyo	38-26	KOSHINO Kazuhiko
NARUMI Hisatoshi	42-22	KOSHINO Kazuhiko

2015-06-21: 43_All_Japan_Tokyo_prelim_2(Japan)

KOSHINO Kazuhiko	33-31	KITAJIMA Hideki
SAKAGUCHI Kazuhiro	35-29	KOSHINO Kazuhiko
IWAKURA Hiroaki	35-29	KOSHINO Kazuhiko
TAKAHASHI Hisashi	45-19	KOSHINO Kazuhiko
SOUDA Shun	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	WATANABE Keiichi

2015-06-07: 43_All_Japan_Tokyo_prelim_1(Japan)

KOSHINO Kazuhiko	35-29	KOMAGATA Masayuki
IWAKURA Hiroaki	34-30	KOSHINO Kazuhiko
SAITO Riki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	HISHIYAMA Yuichi
KOSHINO Kazuhiko	34-30	KITAJIMA Hideki
KOSHINO Kazuhiko	37-27	YAMAZAKI Nobuyuki

2015-05-17: 51_Tatebayashi_open(Japan)

GOTO Masahiro	33-31	KOSHINO Kazuhiko
TAKAHASHI Hisashi	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	KAWASAKI Akito
KOSHINO Kazuhiko	37-27	ISHIKAWA Akira
TANAKA Atsushi	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	OCHIAI Naofumi

2015-05-10: 161_Nagareyama(Japan)

FUNATSU Asuka	34-30	KOSHINO Kazuhiko
NISHIO Hakudo	40-24	KOSHINO Kazuhiko
URANO Kento	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	OKAMURA Anetsu
TAKAHASHI Hisashi	42-22	KOSHINO Kazuhiko
TOMI Kazuko	33-31	KOSHINO Kazuhiko

2015-04-29: 3_Tokyo_open(Japan)

URANO Kento	33-31	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	36-28	KOSHINO Kazuhiko
YAMADA Kazuko	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	OCHIAI Naofumi
KOSHINO Kazuhiko	35-29	TAKAHASHI Hisashi
KOSHINO Kazuhiko	43-21	WATANABE Keiichi

2015-04-19: 23_Master_open(Japan)

ISHIKAWA Akira	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	KAWABATA Seiji
KOSHINO Kazuhiko	35-29	URUSHIHARA Kazuhiro
KATORI Michihiro	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	MATSUMOTO Makoto

2015-04-05: 3_Yokohama_challenge(Japan)

FUKUCHI Keisuke	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	NAKAZAWA Junichi
ABE Yura	34-30	KOSHINO Kazuhiko
MABUCHI Yuta	42-22	KOSHINO Kazuhiko
KURIHARA Aru	34-30	KOSHINO Kazuhiko
IZUMI Takashi	43-21	KOSHINO Kazuhiko

2015-03-29: 50_Tatebayashi_open(Japan)

TAKAHASHI Hisashi	34-30	KOSHINO Kazuhiko
URUSHIHARA Kazuhiro	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	OCHIAI Naofumi
KOSHINO Kazuhiko	41-23	KUROIWA Atsuhiro
SANO Yoko	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KAWASAKI Akito

2015-03-15: 159_Nagareyama_open(Japan)

KOSHINO Kazuhiko	55-09	HIRATA Motohiro
HAGIKURA Yutaka	47-17	KOSHINO Kazuhiko
FUNATSU Asuka	33-31	KOSHINO Kazuhiko
TSUCHIYA Ryosuke	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	KOBAYASHI Manabu
MABUCHI Yuta	36-28	KOSHINO Kazuhiko

2015-03-01: 92_Kanagawa_open(Japan)

NAKANO Jo	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	NAKAMURA Yasu
KITANO Takumi	38-26	KOSHINO Kazuhiko
AKAGI Tachiro	45-19	KOSHINO Kazuhiko
HAYASAKA Toshie	43-21	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	32-32	KOSHINO Kazuhiko

2015-02-01: 2015_Tokyo_expert_games(Japan)

KOSHINO Kazuhiko	35-29	SHINOHARA Jun
NAKANO Jo	36-28	KOSHINO Kazuhiko
ASAHINA Satoshi	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	YAMAZAKI Nobuyuki
ISHIKAWA Akira	34-30	KOSHINO Kazuhiko
SHIRAI Ukyo	43-21	KOSHINO Kazuhiko

2015-01-18: 158_Nagareyama_open(Japan)

KOSHINO Kazuhiko	54-10	ISHITAKA Masaki
KOSHINO Kazuhiko	48-16	ISOBE Masaki
URANO Kento	36-28	KOSHINO Kazuhiko
TAKAHASHI Hisashi	54-10	KOSHINO Kazuhiko
KURIHARA Aru	35-29	KOSHINO Kazuhiko
NARITA Shunsuke	58-06	KOSHINO Kazuhiko

2015-01-04: 91_Kanagawa_open(Japan)

KOSHINO Kazuhiko	36-28	IWAKURA Hiroaki
TAKAHASHI Hisashi	44-20	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	TAKEDA Kyoko
MATSUZAWA Atsushi	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KOBAYASHI Manabu

2015-01-03: Shinagawa_open_2015(Japan)

IIJIMA Takamune	39-25	KOSHINO Kazuhiko
KOIDE Satoshi	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	YAMAKAWA Yasuo
KOSHINO Kazuhiko	41-23	WATANABE Keiichi
KOSHINO Kazuhiko	40-24	OHNO Atsuko
OHTAKE Kosuke	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KUMA Mitsuo

2014-12-28: 239_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	40-24	YAMAMOTO Kunihiro
HISHIYAMA Yuichi	38-26	KOSHINO Kazuhiko
MATSUMOTO Makoto	52-12	KOSHINO Kazuhiko
TAKAHASHI Hisashi	47-17	KOSHINO Kazuhiko
OSATO Suguru	35-29	KOSHINO Kazuhiko

2014-11-30: 14_Saitama_open(Japan)

KOSHINO Kazuhiko	42-22	TOYOTA Yasuteru
KURIHARA Aru	34-30	KOSHINO Kazuhiko
TAKAHASHI Hisashi	33-31	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	NARITA Shunsuke
KOSHINO Kazuhiko	43-21	OCHIAI Naofumi

2014-10-26: 10_Chiba_open(Japan)

KOSHINO Kazuhiko	41-23	WATANABE Keiichi
KOSHINO Kazuhiko	64-00	SUZUKI Seita
KAMIKURA Daisuke	44-20	KOSHINO Kazuhiko
TSUCHIYA Ryosuke	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KOBAYASHI Makoto
KOSHINO Kazuhiko	40-24	KOBAYASHI Manabu

2014-09-28: 2014_Yokohama_open(Japan)

KOSHINO Kazuhiko	38-26	ABE Ryuji
KOSHINO Kazuhiko	36-28	SATOMI Takashi
KOSHINO Kazuhiko	40-24	MASUDA Takayuki
ASAHINA Satoshi	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KADOKURA Taya
KOSHINO Kazuhiko	43-21	OSATO Suguru

2014-08-03: 5_Kanagawa_cup(Japan)

KOSHINO Kazuhiko	37-27	ISHIDA Kazuaki
SATANI Tetsu	58-06	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	MATSUYA Shinpei
MURAKAMI Takeshi	49-15	KOSHINO Kazuhiko
NAKAZAWA Junichi	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	OKAMA Ayumi
HISHIYAMA Yuichi	33-31	KOSHINO Kazuhiko

2014-07-13: 42_All_Japan_Championship(Japan)

HAMAMOTO Kazuhiro	won against	KOSHINO Kazuhiko
IKEDA Atsuhiko	won against	KOSHINO Kazuhiko
MATSUMOTO Makoto	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	FUJITA Toshiko
OKUDA Tsuyoshi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KOBAYASHI Makoto

2014-06-08: 42_All_Japan_Tokyo_prelim_2(Japan)

FURUMOTO Yuki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAKAHASHI Hisashi
KOMAGATA Masayuki	33-31	KOSHINO Kazuhiko
IWAKURA Hiroaki	34-30	KOSHINO Kazuhiko
ISHIKAWA Akira	33-31	KOSHINO Kazuhiko

2014-06-01: 42_All_Japan_Tokyo_prelim_1(Japan)

WATANABE Hajime	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	HISHIYAMA Yuichi
KOSHINO Kazuhiko	34-30	KAMIKURA Daisuke
IWATA Hiroyuki	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KOMAGATA Masayuki
IWAKURA Hiroaki	38-26	KOSHINO Kazuhiko

2014-05-18: 30_Kawagoe_11_Queen_3_Prince(Japan)

KOSHINO Kazuhiko	37-27	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	40-24	OKAMA Ayumi
KOSHINO Kazuhiko	36-28	GOTO Masahiro
KURACHI Takayuki	42-22	KOSHINO Kazuhiko
HISHIYAMA Yuichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAYAMA Tsubasa

2014-04-29: Kanto_student_expert_prelim(Japan)

KOSHINO Kazuhiko	36-28	NAGAO Hiroto
OKAMA Ayumi	36-28	KOSHINO Kazuhiko
HISHIYAMA Yuichi	33-31	KOSHINO Kazuhiko
HORIUCHI Keiko	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KOBAYASHI Manabu
TAKIGAWA Mitsuaki	39-25	KOSHINO Kazuhiko

2014-04-27: 237_Kawagoe_ranking_games(Japan)

KAWAGUCHI Hayato	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	GOTO Masahiro
KOSHINO Kazuhiko	34-30	DEMACHI Koichiro
ISHIKAWA Akira	36-28	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	35-29	KOSHINO Kazuhiko

2014-03-09: 151_Nagareyama_open(Japan)

KOSHINO Kazuhiko	50-14	ASAKAWA Takuya
TAKAHASHI Hisashi	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	KITANO Takumi
HISHIYAMA Yuichi	45-19	KOSHINO Kazuhiko
KATORI Michihiro	51-13	KOSHINO Kazuhiko
KURAHASHI Satoshi	51-13	KOSHINO Kazuhiko

2014-03-02: 87_Kanagawa_open(Japan)

KOSHINO Kazuhiko	38-26	MATSUYA Shinpei
KOSHINO Kazuhiko	42-22	KATO Yuzuru
SATANI Tetsu	43-21	KOSHINO Kazuhiko
YAMAZAKI Nobuyuki	39-25	KOSHINO Kazuhiko
HISHIYAMA Yuichi	55-09	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	HIURA Ryo

2014-02-02: 2014_Tokyo_expert_games(Japan)

ISHIKAWA Akira	33-31	KOSHINO Kazuhiko
NAKANO Jo	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	NISHIO Hakudo
KOSHINO Kazuhiko	won against	TATSUMI-IIJIMA Yukiko
URANO Kento	38-26	KOSHINO Kazuhiko
WATANABE Keiichi	38-26	KOSHINO Kazuhiko

2014-01-05: 86_Kanagawa_open(Japan)

KOSHINO Kazuhiko	47-17	OSATO Suguru
TAKANASHI Yusuke	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	TAKIGAWA Mitsuaki
IIJIMA Takamune	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KITANO Takumi
AKAGI Tachiro	53-11	KOSHINO Kazuhiko

2014-01-03: Shinagawa_open_2014(Japan)

KOSHINO Kazuhiko	38-26	SHINOHARA Jun
KOSHINO Kazuhiko	34-30	KITANO Takumi
AKIYAMA Tatsumi	33-31	KOSHINO Kazuhiko
SAITO Riki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TAKEDA Kyoko
KOSHINO Kazuhiko	36-28	SATO Naohiro
KITANO Ochachi	33-31	KOSHINO Kazuhiko

2013-12-22: 235_Kawagoe_ranking_games(Japan)

OKAMA Ayumi	32-32	KOSHINO Kazuhiko
ISHIKAWA Akira	33-31	KOSHINO Kazuhiko
KITANO Takumi	35-29	KOSHINO Kazuhiko
TAYAMA Tsubasa	46-18	KOSHINO Kazuhiko

2013-12-08: 149_Nagareyama_open(Japan)

KOSHINO Kazuhiko	33-31	ITO Junya
IWATA Hiroyuki	38-26	KOSHINO Kazuhiko
OCHIAI Naofumi	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAYAMA Tsubasa
OKAMA Ayumi	36-28	KOSHINO Kazuhiko
KAWABATA Seiji	45-19	KOSHINO Kazuhiko

2013-12-01: 22_Kawasaki_open(Japan)

KOSHINO Kazuhiko	36-28	TATSUMI-IIJIMA Yukiko
KOSHINO Kazuhiko	40-24	NAMIKI Kazunari
TAKANASHI Yusuke	42-22	KOSHINO Kazuhiko
NODA Bintatsu	35-29	KOSHINO Kazuhiko
TSUCHIYA Ryosuke	55-09	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAKIGAWA Mitsuaki

2013-11-23: 43_Tatebayashi_open(Japan)

HAYASAKA Toshie	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	SUZUKI Hikaru
OKUDA Tsuyoshi	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	OHUCHI Miyuki
URUSHIHARA Kazuhiro	34-30	KOSHINO Kazuhiko
KATORI Michihiro	33-31	KOSHINO Kazuhiko

2013-11-10: 2014_OWC_qualif(Japan)

TSUCHIYA Ryosuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SANO Hirotaka
HAYASAKA Toshie	won against	KOSHINO Kazuhiko
KODAMA Toku	won against	KOSHINO Kazuhiko
ASAHINA Satoshi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAKEDA Kyoko
KOSHINO Kazuhiko	won against	TATSUMI-IIJIMA Yukiko

2013-11-03: 85_Kanagawa_open(Japan)

KOSHINO Kazuhiko	36-28	MATSUYA Shinpei
KOSHINO Kazuhiko	39-25	NARUMI Hisatoshi
KURIHARA Aru	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	ABE Yura
YAMAKAWA Takashi	49-15	KOSHINO Kazuhiko
IWAKURA Hiroaki	32-32	KOSHINO Kazuhiko

2013-10-27: 234_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	33-31	KATSURA Hisatoshi
KOSHINO Kazuhiko	45-19	KITANO Takumi
KOSHINO Kazuhiko	37-27	TANAKA Atsushi
TODA Tomoya	42-22	KOSHINO Kazuhiko
AKAGI Tachiro	45-19	KOSHINO Kazuhiko

2013-10-13: 9_Chiba_open(Japan)

NAGAO Hiroto	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	TAKYAMA Kasa
NARUMI Hisatoshi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	56-08	KOBAYASHI Makoto
KOSHINO Kazuhiko	33-31	TAYAMA Tsubasa
TSUCHIYA Ryosuke	38-26	KOSHINO Kazuhiko

2013-09-30: 2013_Yokohama_open(Japan)

MIYAZAWA Masuyama	35-29	KOSHINO Kazuhiko
MABUCHI Yuta	45-19	KOSHINO Kazuhiko
NISHIO Hakudo	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	HANO Rumiko
SUGUWARA Kiyoshi	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	SAKAKIBARA Hiromi

2013-09-15: 13_Saitama_open(Japan)

URANO Kento	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	TAKAYAMA Akihiro
KOSHINO Kazuhiko	36-28	KAWABATA Seiji
KOSHINO Kazuhiko	34-30	GOTO Masahiro
KOSHINO Kazuhiko	42-22	MATSUMOTO Makoto
HISHIYAMA Yuichi	39-25	KOSHINO Kazuhiko

2013-08-25: 84_Kanagawa_open(Japan)

SAITO Riki	33-31	KOSHINO Kazuhiko
YABE Uma	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TATSUMI-IIJIMA Yukiko
KOSHINO Kazuhiko	52-12	MATSUMOTO Takaki
TATENO Ryuuji	37-27	KOSHINO Kazuhiko
KITANO Ochachi	43-21	KOSHINO Kazuhiko

2013-07-14: 41_All_Japan_championship(Japan)

NAKANO Jo	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KAWAKI Matruko
KOSHINO Kazuhiko	won against	DOJUN Makiko
KOZUKA Katsuhiko	won against	KOSHINO Kazuhiko
HISHIYAMA Yuichi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	OHE Yoshimaru

2013-06-02: 41_All_Japan_Tokyo_prelim_2(Japan)

KOSHINO Kazuhiko	34-30	KOIDE Satoshi
KIMURA Yuto	36-28	KOSHINO Kazuhiko
IWAKURA Hiroaki	33-31	KOSHINO Kazuhiko
TAKAHASHI Hisashi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	MIYATA Toru
KOSHINO Kazuhiko	38-25	OHUCHI Yasuhiro

2013-05-26: 41_All_Japan_Tokyo_Prelim_1(Japan)

ISHIKAWA Akira	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KOIDE Satoshi
KOSHINO Kazuhiko	won against	ASOU Daisuke
KOMAGATA Masayuki	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAKAHASHI Hisashi
ASAHINA Satoshi	34-30	KOSHINO Kazuhiko

2013-05-06: north_Kanto_expert_games_2013(Japan)

KOSHINO Kazuhiko	40-24	ADACHI Shuji
IIJIMA Takamune	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KANEKO Kodai
TOKI Yugo	35-29	KOSHINO Kazuhiko
TOKI Hidenobu	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	MATSUMOTO Takaki

2013-05-05: 145_Nagareyama_open(Japan)

KOSHINO Kazuhiko	52-12	MATSUMOTO Yuko
KOSHINO Kazuhiko	53-11	MATSUMOTO Takaki
MATSUMOTO Makoto	43-21	KOSHINO Kazuhiko
OHMORI Keita	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	NAKAGAKI Horiuchi
KIMURA Yuto	47-17	KOSHINO Kazuhiko

2013-04-21: 21_Master_open(Japan)

KOSHINO Kazuhiko	47-17	ITO Hito
GOTO Masahiro	37-27	KOSHINO Kazuhiko
KAWAGUCHI Hayato	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	MATSUMOTO Makoto
DEMACHI Koichiro	45-19	KOSHINO Kazuhiko
KATORI Michihiro	47-17	KOSHINO Kazuhiko

2013-04-14: 3_Azuba_open(Japan)

KOSHINO Kazuhiko	41-23	TAKEDA Kyoko
KOSHINO Kazuhiko	35-29	IIJIMA Takamune
MURAKAMI Takeshi	41-23	KOSHINO Kazuhiko
NAKANO Jo	34-30	KOSHINO Kazuhiko
TASAKA Kanichiro	39-25	KOSHINO Kazuhiko
ITAGAKI Kenichi	34-30	KOSHINO Kazuhiko

2013-04-07: 1_Yokohama_challenge(Japan)

ASAHINA Satoshi	35-29	KOSHINO Kazuhiko
MATSUYA Shinpei	53-11	KOSHINO Kazuhiko
TAYAMA Tsubasa	44-20	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	38-26	KOSHINO Kazuhiko
HISHIYAMA Yuichi	48-16	KOSHINO Kazuhiko

2013-03-31: 34_Meijin(Japan)

KOSHINO Kazuhiko	won against	KITAJIMA Hideki
YAMAKAWA Takashi	won against	KOSHINO Kazuhiko
SAKAGUCHI Kazuhiro	won against	KOSHINO Kazuhiko
FUNASAKI Hiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	MATSUMOTO Takaki
SATO Yutaka	won against	KOSHINO Kazuhiko
MORI Takahiro	won against	KOSHINO Kazuhiko

2013-03-03: 82_Kanagawa_open(Japan)

IMOTO Wataru	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	TAKAHASHI Shiu
NARUMI Hisatoshi	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	OHNO Atsuko
MIYAZAKI Yuji	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KUNOU Masakado

2012-11-25: 12_Saitama_open(Japan)

ABE Yura	32-32	KOSHINO Kazuhiko
EBIHARA Yusuke	34-30	KOSHINO Kazuhiko
KIMURA Yuto	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	60-04	TOMI Kazuko
TODA Tomoya	44-20	KOSHINO Kazuhiko
KAWABATA Seiji	33-31	KOSHINO Kazuhiko

2012-11-11: OWC2013_qualification(Japan)

KOSHINO Kazuhiko	won against	TATSUMI-IIJIMA Yukiko
TAKIZAWA Masaki	won against	KOSHINO Kazuhiko
MATSUMOTO Hiroshi	won against	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	won against	KOSHINO Kazuhiko
KOBAYASHI Manabu	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	ABE Ryuji

2012-10-01: 2012_Yokohama_open(Japan)

KOSHINO Kazuhiko	39-25	AKAGI Tachiro
IWAKURA Hiroaki	54-10	KOSHINO Kazuhiko
NAGAMATSU Ryota	47-17	KOSHINO Kazuhiko
TAYAMA Tsubasa	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	SUZUKI Gen

2012-09-23: 36_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	37-27	HIROSHIMA Koji
KURACHI Takayuki	37-27	KOSHINO Kazuhiko
GOTO Masahiro	42-22	KOSHINO Kazuhiko
URUSHIHARA Kazuhiro	33-31	KOSHINO Kazuhiko
TAKAHASHI Shiu	37-27	KOSHINO Kazuhiko
OKUDA Tsuyoshi	40-24	KOSHINO Kazuhiko

2012-09-16: 8_Chiba_open(Japan)

KOSHINO Kazuhiko	59-05	SOGABE Ryosuke
SAWAKI Yusuke	52-12	KOSHINO Kazuhiko
GOTO Masahiro	47-17	KOSHINO Kazuhiko
KOBAYASHI Manabu	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAYAMA Tsubasa
KANEKO Kodai	40-24	KOSHINO Kazuhiko

2012-08-26: 79_Kanagawa_open(Japan)

TAYAMA Tsubasa	38-26	KOSHINO Kazuhiko
NAKAMORI Hiroki	34-30	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	42-22	KOSHINO Kazuhiko
HIEDA Shigemasa	36-28	KOSHINO Kazuhiko
OGATA Masa	33-31	KOSHINO Kazuhiko

2012-08-05: 3_Kanagawa_cup(Japan)

KOSHINO Kazuhiko	35-29	KADOKURA Taya
IKEDA Atsuhiko	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	FUNATSU Asuka
YAMAZAKI Nobuyuki	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TAYAMA Tsubasa
KOSHINO Kazuhiko	41-23	GOTO Masahiro
KOSHINO Kazuhiko	51-13	HAYASAKA Toshie

2012-07-22: 140_Nagareyama_open(Japan)

KOSHINO Kazuhiko	44-20	TAKAHASHI Shiu
NAGAMATSU Ryota	won against	KOSHINO Kazuhiko
TAKAHASHI Kenji	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	TAYAMA Tsubasa
KOSHINO Kazuhiko	44-20	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	45-19	OKUDA Tsuyoshi

2012-07-18: 40_All_Japan_open_champ(Japan)

MATSUYA Shinpei	won against	KOSHINO Kazuhiko
SATO Yutaka	won against	KOSHINO Kazuhiko
SUZUKI Takahiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KIKUCHI Aoi
KOSHINO Kazuhiko	won against	YOSHIKAWA Chiaki
KOSHINO Kazuhiko	won against	OHTSUBO Hidetaka

2012-07-01: 78_Kanagawa_open(Japan)

SATANI Tetsu	37-27	KOSHINO Kazuhiko
TAYAMA Tsubasa	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	TAKAHASHI Shiu
KOSHINO Kazuhiko	35-29	SANO Joichiro
KOSHINO Kazuhiko	42-22	ITAGAKI Kenichi
IIJIMA Takamune	49-15	KOSHINO Kazuhiko

2012-06-24: 40_All_Japan_Tokyo_prelim_2(Japan)

KOSHINO Kazuhiko	34-30	KUDOU Keita
KOZUKA Katsuhiko	40-24	KOSHINO Kazuhiko
SATO Yutaka	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	SHINOHARA Chiaki
KOSHINO Kazuhiko	35-29	HASHIKAWA Techine
KOSHINO Kazuhiko	37-27	KANEDA Shigeru

2012-06-17: 40_All_Japan_Tokyo_prelim(Japan)

IIJIMA Takamune	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	INAZU Harutaro
MIYATA Toru	35-29	KOSHINO Kazuhiko
KAMIKURA Daisuke	38-26	KOSHINO Kazuhiko
MATSUDA Shoma	37-27	KOSHINO Kazuhiko
ISECHI Keisuke	33-31	KOSHINO Kazuhiko

2012-05-27: 20_Masutaohu_open(Japan)

KOSHINO Kazuhiko	38-26	KAWABATA Seiji
KATORI Michihiro	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KAWAGUCHI Hayato
ISHIKAWA Akira	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	MATSUMOTO Makoto

2012-05-06: North_Kanto_expert_games_2012(Japan)

IWATA Hiroyuki	43-21	KOSHINO Kazuhiko
IWAKURA Hiroaki	35-29	KOSHINO Kazuhiko
TAKAHASHI Hisashi	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	MATSUMOTO Takaki
KOSHINO Kazuhiko	36-28	TAKEDA Kyoko

2012-04-30: 1_Tokyo_open(Japan)

ABE Yura	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	41-23	MATSUDA Shoma
TATSUMI-IIJIMA Yukiko	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	HAYASHI Taka
KANEKO Kodai	33-31	KOSHINO Kazuhiko

2012-04-15: 229_Kawagoe_ranking_games(Japan)

HONMA Yosuke	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	60-04	MATSUMOTO Takaki
KOSHINO Kazuhiko	46-18	OHNO Atsuko
KAMIKURA Daisuke	34-30	KOSHINO Kazuhiko
TAKAHASHI Shiu	36-28	KOSHINO Kazuhiko
TAYAMA Tsubasa	37-27	KOSHINO Kazuhiko

2012-03-11: 228_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	47-17	NAKAMURA Shinjiro
IWATA Hiroyuki	48-16	KOSHINO Kazuhiko
KURACHI Takayuki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	55-09	KITAJIMA Masato
KOSHINO Kazuhiko	41-23	SEKIGUCHI Sousei
KOSHINO Kazuhiko	44-20	GOTO Masahiro

2012-03-04: Meijin_groupA(Japan)

KOSHINO Kazuhiko	36-28	HAYASAKA Toshie
KOSHINO Kazuhiko	43-21	MURAKAMI Takeshi
KANDA Yoshihiro	50-14	KOSHINO Kazuhiko
KAMEMOTO Osamu	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	NAKANO Jo
KOSHINO Kazuhiko	35-29	UNO Toshihiro
FUKUNAGA Kohachi	51-13	KOSHINO Kazuhiko

2012-02-26: 77_Kanagawa_open(Japan)

KOSHINO Kazuhiko	36-28	SHINDO Kouki
KOSHINO Kazuhiko	43-21	NAGAO Hiroto
NARUMI Hisatoshi	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	KAMIKURA Daisuke
KOSHINO Kazuhiko	43-21	TAKAHASHI Hisashi
TOYOTA Yasuteru	35-29	KOSHINO Kazuhiko

2012-01-22: 32_Tatebayashi_open(Japan)

NAKAMURA Keiko	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	ISHIKAWA Ryosuke
KOSHINO Kazuhiko	42-22	OKUDA Tsuyoshi
URUSHIHARA Kazuhiro	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	NAOE Masahiro
ISHIKAWA Akira	45-19	KOSHINO Kazuhiko

2012-01-08: 76_Kanagawa_open(Japan)

KOSHINO Kazuhiko	52-12	KOIKE Hiroto
TATSUMI-IIJIMA Yukiko	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAYAMA Tsubasa
TANAKA Shuntaro	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	YAMAZAKI Nobuyuki
KOSHINO Kazuhiko	35-29	GOTO Masahiro

2012-01-03: Shinagawa_open_2012(Japan)

TAKANASHI Yusuke	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	NAKAYAMA Takahiro
KOSHINO Kazuhiko	34-30	HISHIYAMA Yuichi
KOSHINO Kazuhiko	46-18	OCHIAI Naofumi
KOSHINO Kazuhiko	35-29	MATSUYA Shinpei
YAMAKAWA Takashi	won against	KOSHINO Kazuhiko
NAGAO Hiroto	41-23	KOSHINO Kazuhiko

2011-12-25: 2_Azabu_open(Japan)

KOSHINO Kazuhiko	33-31	MATSUZAWA Atsushi
KURAHASHI Satoshi	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	TATSUMI-IIJIMA Yukiko
KAMIKURA Daisuke	36-28	KOSHINO Kazuhiko
KANEKO Takahiro	44-20	KOSHINO Kazuhiko
TAKAOKA Shohei	41-23	KOSHINO Kazuhiko

2011-12-23: 136_Nagareyama_open(Japan)

KATORI Michihiro	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	IWAZAWA Junya
KOSHINO Kazuhiko	44-20	IKEDA Yuki
KOSHINO Kazuhiko	40-24	TAYAMA Tsubasa
OKUDA Tsuyoshi	43-21	KOSHINO Kazuhiko

2011-12-04: 18_Kawasaki_open(Japan)

MURAKAMI Takeshi	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAYAMA Tsubasa
EBIHARA Yusuke	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	MUSAKA Shizue
ISHIKAWA Akira	39-25	KOSHINO Kazuhiko
NODA Bintatsu	48-16	KOSHINO Kazuhiko

2011-11-23: 31_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	33-31	KINOSHITA Tsutomu
SATO Koichiro	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	UMEMURA Yuji
ISHIKAWA Akira	34-30	KOSHINO Kazuhiko
OHUCHI Yasuhiro	38-26	KOSHINO Kazuhiko
YAMAMOTO Kunihiro	36-28	KOSHINO Kazuhiko

2011-11-20: 226_Kawagoe_ranking_games(Japan)

TODA Tomoya	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	HAYASAKA Toshie
KAMIKURA Daisuke	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	SUZUKI Yoshiyuki
IKEDA Yuki	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	61-03	KASAHARA Shoji

2011-11-13: 135_Nagareyama_open(Japan)

KOSHINO Kazuhiko	won against	KINOSHITA Tsutomu
NARUMI Hisatoshi	47-17	KOSHINO Kazuhiko
KANEKO Kodai	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	KOTANI Rumi
KOSHINO Kazuhiko	39-25	KATORI Michihiro

2011-11-06: 75_Kanagawa_open(Japan)

IKEDA Atsuhiko	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	TSUCHIYA Ryosuke
KOBAYASHI Manabu	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TAKAOKA Shohei
KOSHINO Kazuhiko	44-20	MIYATA Toru
MITSUYA Nobuaki	46-18	KOSHINO Kazuhiko

2011-10-30: 2011_Yokohama_open(Japan)

DOBASHI Yusuke	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	GOTO Masahiro
KOSHINO Kazuhiko	33-31	OHUCHI Yasuhiro
KOSHINO Kazuhiko	34-30	KANEKO Kodai
KAMIKURA Daisuke	51-13	KOSHINO Kazuhiko
OSHIMA Yusuke	35-29	KOSHINO Kazuhiko

2011-09-25: 225_Kawagoe_ranking_games(Japan)

HONMA Yosuke	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	NAKANO Sumiko
KANEKO Kodai	44-20	KOSHINO Kazuhiko
FUJITA Kousuke	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	TAKAOKA Shohei

2011-09-23: Tatebayashi_open(Japan)

KOSHINO Kazuhiko	40-24	SHIKUMI Kenji
KOSHINO Kazuhiko	34-30	OHUCHI Yasuhiro
KINOSHITA Tsutomu	33-31	KOSHINO Kazuhiko
OKUDA Tsuyoshi	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	OCHIAI Naofumi
KURACHI Takayuki	36-28	KOSHINO Kazuhiko

2011-09-19: 11_Saitama_open(Japan)

KOSHINO Kazuhiko	34-30	MORIGUCHI Shota
ISHIDA Kazuaki	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	FUJITA Kousuke
YAMAMOTO Kunihiro	33-31	KOSHINO Kazuhiko
FUNATSU Asuka	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	HAYASAKA Toshie

2011-09-18: 7_Chiba_open(Japan)

KOSHINO Kazuhiko	59-05	YAMASHITA Michiko
KOSHINO Kazuhiko	51-13	MURAKAMI Takeshi
NARUMI Hisatoshi	35-29	KOSHINO Kazuhiko
KANEKO Kodai	39-25	KOSHINO Kazuhiko
TASAKA Kanichiro	37-27	KOSHINO Kazuhiko
HONMA Yosuke	38-26	KOSHINO Kazuhiko

2011-09-04: 74_Kanagawa_open(Japan)

KOSHINO Kazuhiko	34-30	TOKI Yugo
KOMAGATA Masayuki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	TAKAOKA Shohei
IWAKURA Hiroaki	51-13	KOSHINO Kazuhiko
NODA Bintatsu	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	TAKEDA Kyoko

2011-08-28: 6_Ouza_sen(Japan)

NAKAOKA Akinori	48-16	KOSHINO Kazuhiko
MIYAZAKI Toru	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	YANASE Tomokazu
YAMAZAKI Nobuyuki	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	OHTSUBO Hidetaka
KOSHINO Kazuhiko	35-29	NAKAMORI Hiroki
SATANI Tetsu	54-10	KOSHINO Kazuhiko

2011-08-21: 133_Nagareyama_open(Japan)

KOBAYASHI Manabu	49-15	KOSHINO Kazuhiko
OHTAKE Kosuke	42-22	KOSHINO Kazuhiko
HISHIYAMA Yuichi	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	MITSUISHI Harumi
KAMIKURA Daisuke	50-14	KOSHINO Kazuhiko

2011-08-07: 2_Kanagawa_Katsuhu_open(Japan)

KOSHINO Kazuhiko	39-25	OCHIAI Naofumi
KOSHINO Kazuhiko	37-27	NAGASHIMA Kazuhito
ASOU Daisuke	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	IKEDA Atsuhiko
SHIMIZU Ryusei	39-25	KOSHINO Kazuhiko
SHIKUMI Kenji	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	TERASAWA Fuji

2011-07-17: 39_Japan_Champ(Japan)

KOSHINO Kazuhiko	won against	NAKAYAMA Takahiro
GOTO Masahiro	won against	KOSHINO Kazuhiko
MIYAZAKI Toru	won against	KOSHINO Kazuhiko
SANO Hidekazu	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KASAI Yuta
TANAKA Irie	won against	KOSHINO Kazuhiko

2011-07-10: 132_Nagareyama_open(Japan)

KOSHINO Kazuhiko	42-22	OKUNO Masanobu
IKEDA Yuki	35-29	KOSHINO Kazuhiko
TASAKA Kanichiro	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TAKAHASHI Shiu
KOSHINO Kazuhiko	46-18	HAIJIMA Mitsuya

2011-07-03: 73_Kanagawa_open(Japan)

NOBUKAWA Hiroki	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	TAKAHASHI Shiu
NARUMI Hisatoshi	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	SANO Yoko
GOTO Masahiro	50-14	KOSHINO Kazuhiko
HONMA Yosuke	32-32	KOSHINO Kazuhiko

2011-06-26: 39_Japan_Champ_Kyoto_prelim(Japan)

KOSHINO Kazuhiko	34-30	ASAHINA Satoshi
KOSHINO Kazuhiko	36-28	SHIMIZU Ryusei
SAKAGUCHI Kazuhiro	33-31	KOSHINO Kazuhiko
OHUCHI Yasuhiro	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	TAKAHASHI Hisashi
KOSHINO Kazuhiko	44-20	ASOU Daisuke
KOIDE Satoshi	34-30	KOSHINO Kazuhiko

2011-06-12: 39_Japan_champ_Tokyo_prelim(Japan)

TSUKAMOTO Kazuma	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	YOSHIKAWA Takeshi
MATSUDA Shoma	35-29	KOSHINO Kazuhiko
SHINOHARA Chiaki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	WAKAYAMA Yusuke
KOSHINO Kazuhiko	34-30	TASAKA Kanichiro

2011-06-05: 17_Kawasaki_open(Japan)

KOSHINO Kazuhiko	52-12	GOTO Masahiro
IKEDA Atsuhiko	34-30	KOSHINO Kazuhiko
YAMAZAKI Nobuyuki	33-31	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	YOSHIKAWA Takeshi
YOSHIDA Miki	42-22	KOSHINO Kazuhiko

2011-05-29: 32_Meijin(Japan)

KOSHINO Kazuhiko	won against	KURITA Seiya
OHTAKE Kosuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NISHIMURA Tatsuyuki
KOSHINO Kazuhiko	won against	NAKAMORI Chiaki
KOSHINO Kazuhiko	won against	MIYAZAKI Toru
NAGASAKI Hidekazu	won against	KOSHINO Kazuhiko

2011-05-15: 131_Nagareyama_open(Japan)

KOSHINO Kazuhiko	37-27	KOZUKA Katsuhiko
KOSHINO Kazuhiko	33-31	KOBAYASHI Manabu
OHTAKE Kosuke	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	TAKAOKA Shohei
KOSHINO Kazuhiko	44-20	NAGASHIMA Kazuhito

2011-05-01: 19_Masutaohu_open(Japan)

ISHIKAWA Akira	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	KITAJIMA Masato
KAWAGUCHI Hayato	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	KAWABATA Seiji
KOSHINO Kazuhiko	44-20	TAKEDA Kyoko
KATORI Michihiro	49-15	KOSHINO Kazuhiko

2011-04-30: 130_Nagareyama_open(Japan)

SATO Hisakazu	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	YOSHIKAWA Takeshi
KOSHINO Kazuhiko	37-27	KAWAGUCHI Hayato
KOSHINO Kazuhiko	44-20	AKAIKE Hide
NARUMI Hisatoshi	37-27	KOSHINO Kazuhiko

2011-04-29: 24_Kanto_social_choosing(Japan)

KOSHINO Kazuhiko	33-31	KOMAGATA Masayuki
TAKEDA Kyoko	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	TOKI Hidenobu
KOSHINO Kazuhiko	40-24	KOBAYASHI Manabu
NAGASAKI Hidekazu	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	SHIBASAKI Lily

2011-04-10: 226_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	34-30	GOTO Masahiro
TODA Tomoya	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KAWABATA Seiji
NAKAMURA Shunsuke	52-12	KOSHINO Kazuhiko
ASAKAWA Takuya	41-23	KOSHINO Kazuhiko

2011-02-13: 129_Nagareyama_open(Japan)

KOSHINO Kazuhiko	36-28	KAWARADA Seiji
IKEDA Atsuhiko	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	YAMASHITA Michiko
HIRAGA Ryosuke	45-19	KOSHINO Kazuhiko
KATORI Michihiro	48-16	KOSHINO Kazuhiko

2011-02-12: 70_Chiyarenshi(Japan)

TAKADA Ryo	38-26	KOSHINO Kazuhiko
TSUCHIYA Ryosuke	34-30	KOSHINO Kazuhiko
NARUMI Hisatoshi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	MATSUDA Shoma
SATO Yutaka	34-30	KOSHINO Kazuhiko
TAYAMA Tsubasa	34-30	KOSHINO Kazuhiko

2011-01-30: Tokyo_expert_games(Japan)

ASOU Daisuke	41-23	KOSHINO Kazuhiko
TOKI Hidenobu	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	SHIMONOSONO Kozo
KOSHINO Kazuhiko	37-27	YOSHIKAWA Takeshi
KOSHINO Kazuhiko	won against	KOZUKA Katsuhiko
AKASHI Tomone	36-28	KOSHINO Kazuhiko

2011-01-16: 128_Nagareyama_open(Japan)

KOSHINO Kazuhiko	44-20	FUNATSU Asuka
KOSHINO Kazuhiko	33-31	TANAKA Atsushi
KOSHINO Kazuhiko	36-28	SATO Koichiro
ISHIKAWA Akira	48-16	KOSHINO Kazuhiko
OKUDA Tsuyoshi	46-18	KOSHINO Kazuhiko

2011-01-15: 51_King_state(Japan)

KOSHINO Kazuhiko	41-23	NARUMI Hisatoshi
NAKAJIMA Tetsuya	34-29	KOSHINO Kazuhiko
OHMORI Keita	40-23	KOSHINO Kazuhiko
IWAKURA Hiroaki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	KOBAYASHI Manabu
WATANABE Keiichi	33-31	KOSHINO Kazuhiko

2011-01-09: 71_Kanagawa_open(Japan)

HAGIKURA Yutaka	62-02	KOSHINO Kazuhiko
OHSUMI Naoto	55-09	KOSHINO Kazuhiko
KOYAHARA Naoto	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	NAKAYAMA Takahiro
DOBASHI Yusuke	35-29	KOSHINO Kazuhiko

2011-01-08: 69_Chiyarenshi(Japan)

KAWAGUCHI Hayato	35-29	KOSHINO Kazuhiko
WATANABE Keiichi	35-29	KOSHINO Kazuhiko
NARUMI Hisatoshi	35-29	KOSHINO Kazuhiko
TOKI Yugo	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TOKI Hidenobu

2011-01-03: Shinagawa_open(Japan)

KOMAGATA Masayuki	35-29	KOSHINO Kazuhiko
TAKANASHI Yusuke	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	OHTAKE Kosuke
KOSHINO Kazuhiko	37-27	KOBAYASHI Makoto
NAMIKI Kazunari	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	SHINOHARA Ryo
NARUMI Hisatoshi	36-28	KOSHINO Kazuhiko

2010-12-26: 224_Kawagoe_ranking_games(Japan)

KOBAYASHI Manabu	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	YOSHIDA Hideaki
KURACHI Takayuki	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	SHIBASAKI Lily
KOSHINO Kazuhiko	64-00	KAWABATA Seiji
KURITA Seiya	46-18	KOSHINO Kazuhiko

2010-12-23: 127_Nagareyama_open(Japan)

KOSHINO Kazuhiko	36-28	KATORI Michihiro
KOSHINO Kazuhiko	52-12	OGAWA Ami
IWAKURA Hiroaki	41-23	KOSHINO Kazuhiko
KAWAGUCHI Hayato	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	WATANABE Keiichi

2010-12-18: 50_King_state(Japan)

NAKAJIMA Tetsuya	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	KOBAYASHI Manabu
KOSHINO Kazuhiko	35-29	ISHIKAWA Akira
NAGANO Yasushi	42-22	KOSHINO Kazuhiko
TOKI Yugo	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	IWAKURA Hiroaki

2010-12-05: 16_Kawasaki_open(Japan)

HANAGAMI Tatsuhiko	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	TAKEDA Kyoko
IWAKURA Hiroaki	38-26	KOSHINO Kazuhiko
KOBAYASHI Manabu	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	TAKAHASHI Shiu

2010-12-04: 73_Shinagawa_open(Japan)

TATSUMI-IIJIMA Yukiko	33-31	KOSHINO Kazuhiko
TSUKAMOTO Kazuma	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KOBAYASHI Manabu
SHIMONOSONO Kozo	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KOBAYASHI Makoto
KOSHINO Kazuhiko	42-22	TAYAMA Tsubasa

2010-11-28: 25_Tatebayashi_open(Japan)

ANDO Tomoaki	32-32	KOSHINO Kazuhiko
GOTO Masahiro	39-25	KOSHINO Kazuhiko
SHINDO You	36-28	KOSHINO Kazuhiko
KOBAYASHI Manabu	34-30	KOSHINO Kazuhiko
OHUCHI Yasuhiro	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	TSUTSUI Masayuki

2010-11-21: 126_Nagareyama_open(Japan)

HAGIKURA Yutaka	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	KOBAYASHI Makoto
SATO Koichiro	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	KOBAYASHI Manabu
KOSHINO Kazuhiko	43-21	KURAHASHI Satoshi

2010-11-14: 223_Kawagoe_ranking_games(Japan)

KOSHINO Kazuhiko	40-24	KURACHI Takayuki
IWATA Hiroyuki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	TAKIGAWA Mitsuaki
TANAKA Shuntaro	41-23	KOSHINO Kazuhiko
TANAKA Atsushi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	TAKAHASHI Shiu

2010-11-07: 70_Kanagawa_open(Japan)

NARUMI Hisatoshi	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	NAKAMURA Shunsuke
KOSHINO Kazuhiko	38-26	NAGASAKI Hidekazu
KOSHINO Kazuhiko	50-14	ISHIKAWA Akira
IWATA Hiroyuki	49-15	KOSHINO Kazuhiko
MATSUYA Shinpei	40-24	KOSHINO Kazuhiko

2010-10-31: Yakohama_open_2010(Japan)

KOSHINO Kazuhiko	49-15	OOBA Kikuchi
KOSHINO Kazuhiko	45-19	ASOU Daisuke
KOSHINO Kazuhiko	36-28	TSUCHIYA Ryosuke
IWAKURA Hiroaki	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAKAHASHI Shiu
KOSHINO Kazuhiko	42-22	YOSHIKAWA Takeshi

2010-10-24: 222_Kawagoe_ranking_games(Japan)

GOTO Masahiro	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KITAJIMA Masato
TODA Tomoya	43-21	KOSHINO Kazuhiko
NAKAMURA Shunsuke	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KOKUBO Shigeki
KOSHINO Kazuhiko	35-29	TANAKA Atsushi

2010-10-10: 6_Chiba_open(Japan)

HADA Jun	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	62-02	ONO Futoshi
TAKAHASHI Shiu	37-27	KOSHINO Kazuhiko
ISHIKAWA Akira	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	SUZUKI Yuta
GOTO Masahiro	46-18	KOSHINO Kazuhiko

2010-09-26: 24_Tatebayashi_open(Japan)

URUSHIHARA Kazuhiro	39-25	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	42-22	KOSHINO Kazuhiko
YAMAMOTO Kunihiro	41-23	KOSHINO Kazuhiko
KOITABASHI Ryoma	32-32	KOSHINO Kazuhiko
WATANABE Keiichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	SATAKE Yosuke

2010-09-19: 10_Saitama_open(Japan)

KOSHINO Kazuhiko	36-28	HAYASAKA Toshie
IWATA Hiroyuki	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KOIDE Satoshi
TSUKAMOTO Kazuma	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	TAKAHASHI Shiu
TANIZAWA Misato	56-08	KOSHINO Kazuhiko

2010-09-18: 47_King_State(Japan)

SAITO Riki	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	WAKIMOTO Naoyuki
KOSHINO Kazuhiko	38-26	KOZUKA Katsuhiko
ASOU Daisuke	37-27	KOSHINO Kazuhiko
NAGASAKI Hidekazu	34-30	KOSHINO Kazuhiko
ISHIKAWA Akira	35-29	KOSHINO Kazuhiko

2010-09-12: 125_Nagareyama_open(Japan)

KAWAGUCHI Hayato	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	GOTO Masahiro
KATORI Michihiro	33-31	KOSHINO Kazuhiko
NAKAI Kota	52-12	KOSHINO Kazuhiko
KOSHINO Kazuhiko	58-06	YOSHIKAWA Takeshi

2010-09-11: 65_Chiyarenshi(Japan)

KOSHINO Kazuhiko	36-28	NARUMI Hisatoshi
IZUMI Takashi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	ASAKAWA Takuya
IWAKURA Hiroaki	34-30	KOSHINO Kazuhiko
KATSURA Hisatoshi	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	SUZUKI Motoyuki

2010-09-05: 69_Kanagawa_open(Japan)

KOSHINO Kazuhiko	42-22	TAKEDA Kyoko
HAGIKURA Yutaka	43-21	KOSHINO Kazuhiko
SHIROTA Yasuto	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	SAWADA Kazuyoshi
TANAKA Atsushi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TAKAHASHI Shiu

2010-09-04: 70_Shinagawa_open(Japan)

KOBAYASHI Kasa	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	OCHIAI Naofumi
KOSHINO Kazuhiko	35-29	SATANI Tetsu
ISHIKAWA Akira	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	WATANABE Keiichi
KOSHINO Kazuhiko	34-30	TANIDA Kunihiko

2010-08-22: 8_Queen_game(Japan)

SANO Joichiro	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	SHINAGAWA Yukinobu
SAITO Riki	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	GOTO Masahiro
TAKAHASHI Shiu	51-13	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	NAGAMATSU Ryota

2010-08-21: 46_King_state(Japan)

IWATA Hiroyuki	35-29	KOSHINO Kazuhiko
KOMAGATA Masayuki	39-25	KOSHINO Kazuhiko
SHIBASAKI Lily	33-31	KOSHINO Kazuhiko
ISHIKAWA Akira	35-29	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	37-27	KOSHINO Kazuhiko

2010-08-14: 64_Chiyarenshi(Japan)

KOSHINO Kazuhiko	43-21	SHINAGAWA Yukinobu
UMEMURA Yuji	38-26	KOSHINO Kazuhiko
HISHIYAMA Yuichi	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	WATANABE Hideaki
KOSHINO Kazuhiko	36-28	SHINOHARA Ryo
KOSHINO Kazuhiko	38-26	NISHIYAMA Momoko

2010-08-08: 124_Nagareyama_open(Japan)

MATSUYA Shinpei	52-12	KOSHINO Kazuhiko
NAGAO Hiroto	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KOBAYASHI Makoto
KOBAYASHI Hironao	42-22	KOSHINO Kazuhiko
KINOSHITA Takao	42-22	KOSHINO Kazuhiko

2010-08-07: 69_Shinagawa_open(Japan)

TAKANASHI Yusuke	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	SUZUKI Motoyuki
SHIMONOSONO Kozo	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	ASAKAWA Takuya
IWAKURA Hiroaki	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	KIUCHI Hideyuki

2010-07-24: 40_King_State(Japan)

KOSHINO Kazuhiko	37-27	SHIBASAKI Lily
IWATA Hiroyuki	36-28	KOSHINO Kazuhiko
MURAKAMI Takeshi	48-16	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	SANO Yoko
IWAKURA Hiroaki	39-25	KOSHINO Kazuhiko

2010-07-18: CH_Japan(Japan)

KOSHINO Kazuhiko	won against	HARII Mitsu
MIZUNO Keigo	won against	KOSHINO Kazuhiko
NISHIMINE Satoru	won against	KOSHINO Kazuhiko
SAITO Shigehiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NAKAMURA Yuki
KOSHINO Kazuhiko	won against	URA Satoru

2010-07-10: 63_Chiyarenshi(Japan)

IWAKURA Hiroaki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KAWAGUCHI Genki
SHINAGAWA Yukinobu	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	HISHIYAMA Yuichi
NAGAMATSU Ryota	41-23	KOSHINO Kazuhiko

2010-07-04: 68_Kanagawa_open(Japan)

YAMAZAKI Nobuyuki	32-32	KOSHINO Kazuhiko
MATSUYA Shinpei	38-26	KOSHINO Kazuhiko
KOMAGATA Masayuki	33-31	KOSHINO Kazuhiko
TOKI Hidenobu	43-21	KOSHINO Kazuhiko
TAKASHIMA Ryoji	44-20	KOSHINO Kazuhiko

2010-07-03: 68_Shinagawa_open(Japan)

NAKAJIMA Tetsuya	37-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	TETSUHIRO Osawa
KOSHINO Kazuhiko	35-29	ASOU Daisuke
NARUMI Hisatoshi	34-30	KOSHINO Kazuhiko
ISHIKAWA Akira	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TOKI Hidenobu

2010-06-27: 38_Japan_Champ_Tokyo_prelim_2(Japan)

SHIROTA Yasuto	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	YAMAGA Shinji
KOSHINO Kazuhiko	35-29	TANAKA Irie
KOZUKA Katsuhiko	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-24	TOKI Yugo
YAMADA Yuichi	34-30	KOSHINO Kazuhiko

2010-06-19: 45_King_state(Japan)

ISHIKAWA Akira	35-29	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	38-26	KOSHINO Kazuhiko
GOTO Masahiro	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	SANO Yoko
KOSHINO Kazuhiko	39-25	WATANABE Keiichi

2010-06-13: 38_Japan_Champ_Tokyo_prelim_1(Japan)

KOSHINO Kazuhiko	39-25	YAHABA Hideki
KOSHINO Kazuhiko	33-31	IIJIMA Takamune
NAGASAKI Hidekazu	38-26	KOSHINO Kazuhiko
ENOMOTO Yasuhiro	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TOKI Hidenobu
KOZUKA Katsuhiko	40-24	KOSHINO Kazuhiko

2010-06-12: 62_Chiyarenshi(Japan)

IWAKURA Hiroaki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	NARUMI Hisatoshi
SANO Yoko	38-26	KOSHINO Kazuhiko
SHINAGAWA Yukinobu	33-31	KOSHINO Kazuhiko
KOBAYASHI Manabu	42-22	KOSHINO Kazuhiko

2010-06-06: 15_Kawasaki_open(Japan)

KOSHINO Kazuhiko	42-22	CUPIAL Milosz
KOSHINO Kazuhiko	59-05	TAKEDA Kyoko
IWATA Hiroyuki	36-28	KOSHINO Kazuhiko
ARAKI Yasuyuki	33-31	KOSHINO Kazuhiko
YOSHIDA Ryota	38-26	KOSHINO Kazuhiko
NAGAO Hiroto	54-10	KOSHINO Kazuhiko

2010-06-05: 67_Shinagawa_open(Japan)

TAKIGAWA Mitsuaki	33-31	KOSHINO Kazuhiko
SUZUKI Yuta	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	FUKUDA Hiroshi
ENOMOTO Hiroyuki	36-28	KOSHINO Kazuhiko
UMEMURA Yuji	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	OKADA Hiroki

2010-05-23: 122_Nagareyama_open(Japan)

HAGIKURA Yutaka	won against	KOSHINO Kazuhiko
KOBAYASHI Manabu	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	ISHIKAWA Akira
OHTAKE Kosuke	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	ITO Kentaro

2010-05-16: 221_Kawagoe_ranking_games(Japan)

SUZUKI Yuta	38-26	KOSHINO Kazuhiko
ISHIKAWA Akira	49-15	KOSHINO Kazuhiko
OHNO Atsuko	44-20	KOSHINO Kazuhiko
SAITO Aya	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	62-02	OKAMA Ayumi
KOSHINO Kazuhiko	45-19	KAWABATA Seiji

2010-05-09: Tatebayashi_open(Japan)

USHIRO Hideaki	43-21	KOSHINO Kazuhiko
OHUCHI Yasuhiro	32-32	KOSHINO Kazuhiko
NAGAMATSU Ryota	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	SANO Joichiro

2010-05-08: 61_Chiyarenshi(Japan)

KOSHINO Kazuhiko	38-26	NARUMI Hisatoshi
KOSHINO Kazuhiko	33-31	IWAKURA Hiroaki
KOSHINO Kazuhiko	33-31	UMEMURA Yuji
TOKI Yugo	37-27	KOSHINO Kazuhiko
OKAMA Ayumi	37-27	KOSHINO Kazuhiko
USHIRO Hideaki	33-31	KOSHINO Kazuhiko

2010-04-18: 220_Kawagoe_ranking_games(Japan)

NAGAMATSU Ryota	34-30	KOSHINO Kazuhiko
TAKAHASHI Shiu	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KITAJIMA Masato
KOSHINO Kazuhiko	41-23	TODA Tomoya
NAKAMURA Shunsuke	39-25	KOSHINO Kazuhiko
OKAMA Ayumi	35-29	KOSHINO Kazuhiko

2010-04-17: 34_King_state_special(Japan)

IWATA Hiroyuki	37-27	KOSHINO Kazuhiko
SAITO Aya	35-29	KOSHINO Kazuhiko
AKASHI Tomone	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KOBAYASHI Manabu
KOSHINO Kazuhiko	won against	WATANABE Keiichi

2010-04-11: 121_Nagareyama_open(Japan)

KOSHINO Kazuhiko	51-13	TAKAGI Kazutaka
SUZUKI Yuta	53-11	KOSHINO Kazuhiko
MIYAZAKI Yuji	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	NAKAI Kota
SANO Joichiro	41-23	KOSHINO Kazuhiko

2010-04-03: 65_Shinagawa_open(Japan)

KOSHINO Kazuhiko	33-31	SHINOHARA Jun
KOSHINO Kazuhiko	40-24	SHIMONOSONO Kozo
KOSHINO Kazuhiko	34-30	TANAKA Irie
IWATA Hiroyuki	34-30	KOSHINO Kazuhiko
MURAKAMI Takeshi	43-21	KOSHINO Kazuhiko
TANIZAWA Misato	35-29	KOSHINO Kazuhiko

2010-03-22: 20_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	34-30	ABE Ryuji
YAMAMOTO Kunihiro	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	SANO Yoko
KOSHINO Kazuhiko	34-30	NAGAMATSU Ryota
KOSHINO Kazuhiko	38-26	URUSHIHARA Kazuhiro
OHUCHI Yasuhiro	39-25	KOSHINO Kazuhiko

2010-03-21: 31_Meijin(Japan)

NAGASAKI Hidekazu	64-00	KOSHINO Kazuhiko
KURODA Takuji	64-00	KOSHINO Kazuhiko
ISHIKAWA Akira	64-00	KOSHINO Kazuhiko
SANO Hirotaka	64-00	KOSHINO Kazuhiko
SAITO Riki	64-00	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	UCHIDA Kiyoyuki

2010-03-14: 120_Nagareyama_open(Japan)

TOKI Yugo	43-21	KOSHINO Kazuhiko
KOBAYASHI Manabu	34-30	KOSHINO Kazuhiko
WATANABE Keiichi	38-26	KOSHINO Kazuhiko
NAKAI Kota	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	KAWADA Masaki

2010-03-07: 67_Nakagawa_open(Japan)

MATSUZAWA Atsushi	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	OHNO Atsuko
MATSUMOTO Hiroyuki	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	SHINOHARA Chiaki
HAGIKURA Yutaka	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	SHINOHARA Jun

2010-03-06: 64_Shinagawa_open(Japan)

KOSHINO Kazuhiko	40-24	OCHIAI Naofumi
SANO Yoko	44-20	KOSHINO Kazuhiko
SHIMIZU Kouichi	35-29	KOSHINO Kazuhiko
NAGASHIMA Kazuhito	41-23	KOSHINO Kazuhiko
SHINOHARA Jun	64-00	KOSHINO Kazuhiko
UMEMURA Yuji	37-27	KOSHINO Kazuhiko

2010-02-28: 38_King_state(Japan)

NAGASAKI Hidekazu	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TOKI Yugo
KOSHINO Kazuhiko	33-31	SHINOHARA Jun
TAKAHASHI Kanji	33-31	KOSHINO Kazuhiko
TOKI Hidenobu	64-00	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	GOTO Masahiro

2010-01-24: 2010_Tokyo_expert_game(Japan)

KOSHINO Kazuhiko	33-31	NAGASAKI Hidekazu
SHIMONOSONO Kozo	34-30	KOSHINO Kazuhiko
IWATA Hiroyuki	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	SHINOHARA Jun
KOSHINO Kazuhiko	44-19	WATANABE Keiichi
KOSHINO Kazuhiko	36-28	TANIZAWA Misato

2010-01-17: 218_Kawagoe_ranking_games(Japan)

MIYAZAKI Yuji	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	ISA Atsuto
KOSHINO Kazuhiko	41-23	SANO Yoko
GOTO Masahiro	47-17	KOSHINO Kazuhiko
SEKIGUCHI Sousei	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	50-14	SANO Joichiro

2010-01-16: 41_King_state(Japan)

KOSHINO Kazuhiko	35-29	AKASHI Tomone
NAKANO Jo	39-25	KOSHINO Kazuhiko
SATO Koichiro	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TSUKAMOTO Kazuma
SHIMIZU Kouichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	SANO Yoko

2010-01-10: 66_Kanagawa_open(Japan)

KOSHINO Kazuhiko	36-28	MITSUYA Nobuaki
IWATA Hiroyuki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	IMOTO Wataru
YOSHIDA Ryota	40-24	KOSHINO Kazuhiko
OHMORI Keita	48-16	KOSHINO Kazuhiko
SHINOHARA Jun	39-25	KOSHINO Kazuhiko

2010-01-09: 57_Chiyarenshi(Japan)

TANIZAWA Misato	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	TOKI Hidenobu
KOSHINO Kazuhiko	38-26	YOSHIDA Ryota
KAWAGUCHI Hayato	37-27	KOSHINO Kazuhiko
TOKI Yugo	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	SANO Yoko

2010-01-03: Shinagawa_open_2010(Japan)

KOSHINO Kazuhiko	36-28	MATSUZAWA Atsushi
TAKANASHI Yusuke	43-21	KOSHINO Kazuhiko
TANAKA Amane	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	SHINAGAWA Yukinobu
SUZUKI Yuta	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KURACHI Takayuki
KITAJIMA Masato	36-28	KOSHINO Kazuhiko

2009-12-27: 217_Kawagoe_ranking_games(Japan)

TANAKA Atsushi	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	OHNO Atsuko
KURITA Seiya	58-06	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	KAWABATA Seiji
KITAJIMA Masato	38-26	KOSHINO Kazuhiko
YOSHIDA Hideaki	35-29	KOSHINO Kazuhiko

2009-12-19: 40_King_state(Japan)

SHIMIZU Kouichi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TANAKA Atsushi
KOSHINO Kazuhiko	38-26	KAWAGUCHI Genki
TAKASAKI Shohei	43-21	KOSHINO Kazuhiko
GOTO Masahiro	37-27	KOSHINO Kazuhiko
ISHIKAWA Akira	36-28	KOSHINO Kazuhiko

2009-12-12: 56_Chiyarenshi(Japan)

SHINOHARA Chiaki	33-31	KOSHINO Kazuhiko
OHUCHI Yasuhiro	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TOKI Hidenobu
IMOTO Wataru	43-21	KOSHINO Kazuhiko
SHINOHARA Jun	33-31	KOSHINO Kazuhiko

2009-12-06: 14_Kawasaki_open(Japan)

KOSHINO Kazuhiko	33-31	YAMABE Yun
KOSHINO Kazuhiko	46-18	DOBASHI Yusuke
MATSUYA Shinpei	40-24	KOSHINO Kazuhiko
MATSUMOTO Hiroyuki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	ISHIKAWA Akira
SUZUKI Yuta	43-21	KOSHINO Kazuhiko

2009-12-05: 62_Shinagawa_open(Japan)

TATSUMI-IIJIMA Yukiko	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KURACHI Takayuki
KOSHINO Kazuhiko	34-30	SUKO Masayuki
KOBAYASHI Makoto	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	SANO Yoko
TANAKA Amane	35-29	KOSHINO Kazuhiko

2009-11-23: 19_Tatebayashi_open(Japan)

KOSHINO Kazuhiko	37-27	KURAMOCHI Yuta
KOSHINO Kazuhiko	43-21	OCHIAI Naofumi
TAKANASHI Yusuke	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	OHUCHI Yasuhiro
GOTO Masahiro	38-26	KOSHINO Kazuhiko
SATAKE Yosuke	44-20	KOSHINO Kazuhiko

2009-11-15: 117_Nagareyama_open(Japan)

SATO Reiko	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	AMAMIYA Aiko
KOSHINO Kazuhiko	44-20	TOMORI Taichi
KOSHINO Kazuhiko	36-28	NAGAO Hiroto
HAGIKURA Yutaka	44-20	KOSHINO Kazuhiko

2009-11-07: 61_Shinagawa_open(Japan)

KOBAYASHI Manabu	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SANO Yoko
KURACHI Takayuki	35-29	KOSHINO Kazuhiko
SUZUKI Yuta	33-31	KOSHINO Kazuhiko
AKASHI Tomone	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TANIZAWA Misato

2009-11-01: 65_Kanagawa_open(Japan)

KOMAGATA Masayuki	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	MURATA Daisuke
MITSUYA Nobuaki	32-32	KOSHINO Kazuhiko
SUZUKI Yuta	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	TANAKA Shuntaro
TAKASHIMA Ryoji	37-27	KOSHINO Kazuhiko

2009-10-25: 37_King_State(Japan)

HAGIKURA Yutaka	39-25	KOSHINO Kazuhiko
TOKI Yugo	33-31	KOSHINO Kazuhiko
GOTO Masahiro	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	SAKURAI Takeuchi
TAKIGAWA Mitsuaki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	SANO Erika

2009-10-11: 5_Chiba_open(Japan)

KOSHINO Kazuhiko	47-17	YAMAMOTO Kunihiro
KOSHINO Kazuhiko	64-00	FUKASAWA Ryoma
KOSHINO Kazuhiko	40-24	TATENO Ryuuji
TANAKA Atsushi	46-18	KOSHINO Kazuhiko
UEDA Mikiya	48-16	KOSHINO Kazuhiko

2009-10-10: 54_Chiyarenshi(Japan)

KOSHINO Kazuhiko	37-27	TANIZAWA Misato
OHUCHI Yasuhiro	35-29	KOSHINO Kazuhiko
NAGAMATSU Ryota	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KURAMOCHI Yuta
SUZUKI Yuta	40-24	KOSHINO Kazuhiko

2009-09-27: 36_King_State(Japan)

KOSHINO Kazuhiko	34-30	SANO Yoko
KOSHINO Kazuhiko	44-20	GOTO Masahiro
NAKAJIMA Tetsuya	42-22	KOSHINO Kazuhiko
KATO Yuzuru	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	IMOTO Wataru
ASOU Daisuke	35-29	KOSHINO Kazuhiko

2009-09-23: 18_Tatebayashi_open(Japan)

KOBAYASHI Manabu	43-21	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAKEDA Kyoko
IMAMINE Kawai	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	46-18	OCHIAI Naofumi
OHTAKE Kosuke	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	NAKAYAMA Takahiro

2009-09-19: 27_King_State(Japan)

KOIDE Satoshi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	WATANABE Keiichi
TAKANASHI Yusuke	43-21	KOSHINO Kazuhiko
MATSUYA Shinpei	36-28	KOSHINO Kazuhiko
SHIMIZU Kouichi	41-23	KOSHINO Kazuhiko

2009-09-12: 53_Chiyarenshi(Japan)

SANO Yoko	35-29	KOSHINO Kazuhiko
KAWAGUCHI Hayato	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	SHIMONOSONO Kozo
KOSHINO Kazuhiko	35-29	HISHIYAMA Yuichi
KOSHINO Kazuhiko	34-30	SUZUKI Yuta
KOSHINO Kazuhiko	37-27	IMOTO Wataru

2009-09-06: 64_Kanagawa_open(Japan)

NOBUKAWA Hiroki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	KURACHI Takayuki
KOSHINO Kazuhiko	47-17	KAWAGUCHI Hayato
OKADA Hionobu	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	TAKIGAWA Mitsuaki
NODA Bintatsu	38-26	KOSHINO Kazuhiko

2009-08-23: 34_King_State(Japan)

NAGAMATSU Ryota	40-24	KOSHINO Kazuhiko
TOKI Yugo	41-23	KOSHINO Kazuhiko
SANO Yoko	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	SANO Erika
SHINOHARA Chiaki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	SANO Joichiro

2009-08-15: 36_King_State(Japan)

NAKANO Jo	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAKEDA Kyoko
KURAMOCHI Yuta	43-21	KOSHINO Kazuhiko
SATO Koichiro	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	HAMADA Kikue
KOSHINO Kazuhiko	37-27	KOBAYASHI Manabu

2009-08-09: 6_Inuyama_open(Japan)

KOSHINO Kazuhiko	35-29	IIJIMA Takamune
SUEKUNI Makoto	38-26	KOSHINO Kazuhiko
NAGASHIMA Kazuhito	35-29	KOSHINO Kazuhiko
NAGASAKI Hidekazu	33-31	KOSHINO Kazuhiko
YAMAKAWA Takashi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	ISHIKAWA Akira

2009-08-08: 52_Chiyarenshi(Japan)

SUZUKI Yuta	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	SANO Yoko
HISHIYAMA Yuichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KOIDE Satoshi
KOSHINO Kazuhiko	39-25	OHTAKE Kosuke
KOSHINO Kazuhiko	33-31	WATANABE Keiichi

2009-08-02: 2009_Yokohama_open(Japan)

IMOTO Wataru	45-19	KOSHINO Kazuhiko
YAMAMURA Yuuki	47-17	KOSHINO Kazuhiko
SUKO Masayuki	49-15	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	INOUE Masaru
KATO Yuzuru	32-32	KOSHINO Kazuhiko

2009-08-01: 59_Shinagawa_open(Japan)

NAGASHIMA Kazuhito	37-27	KOSHINO Kazuhiko
OHNO Atsuko	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	NAGAMATSU Ryota
KOSHINO Kazuhiko	33-31	KATO Yuzuru
KOSHINO Kazuhiko	41-23	HAMADA Kikue
KOSHINO Kazuhiko	37-27	TOKI Yugo

2009-07-12: Queen_Game_Prelim(Japan)

MIYAZAKI Yuji	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	SANO Joichiro
KURACHI Takayuki	48-16	KOSHINO Kazuhiko
OHUCHI Yasuhiro	55-09	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	URAKAWA Hiragana
SEKIDO Kyousuke	40-24	KOSHINO Kazuhiko

2009-07-11: 51_Chiyarenshi(Japan)

KOSHINO Kazuhiko	41-23	OHYANAGI Masaki
KOSHINO Kazuhiko	33-31	NAGANO Yasushi
TOKI Yugo	41-23	KOSHINO Kazuhiko
HISHIYAMA Yuichi	42-22	KOSHINO Kazuhiko
KOBAYASHI Manabu	37-27	KOSHINO Kazuhiko
NAGAMATSU Ryota	33-31	KOSHINO Kazuhiko

2009-07-05: 63_Kanagawa_Open(Japan)

KOSHINO Kazuhiko	48-16	SANO Yoko
KURODA Takuji	40-24	KOSHINO Kazuhiko
YOSHIDA Ryota	32-32	KOSHINO Kazuhiko
NAGASHIMA Kazuhito	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	SHINOHARA Chiaki
KAWAGUCHI Hayato	39-25	KOSHINO Kazuhiko

2009-06-28: 37_Japan_Champ_Tokyo_prelim(Japan)

KOSHINO Kazuhiko	46-18	SOMEYA Shingo
KOBAYASHI Oh	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-28	SHINOHARA Jun
NAGASAKI Hidekazu	41-23	KOSHINO Kazuhiko
SUKO Masayuki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	ISHIZAKI Hikaru

2009-06-14: Amumazeki_Open(Japan)

KOSHINO Kazuhiko	37-27	SHINOHARA Ryo
MURAKAMI Takeshi	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	WATANABE Keiichi
WATAHIKI Kenta	36-28	KOSHINO Kazuhiko
TANAKA Irie	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	SHINOHARA Jun

2009-06-07: 13_Ohu_Open_B(Japan)

KOSHINO Kazuhiko	35-29	IKEDA Atsuhiko
KOSHINO Kazuhiko	35-29	MIYAZAKI Yuji
NODA Bintatsu	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TANIDA Keiko
ISHIKAWA Akira	57-07	KOSHINO Kazuhiko
NAGAMATSU Ryota	40-24	KOSHINO Kazuhiko

2009-06-06: 57_Shinagawa_Open(Japan)

OHNO Tomohiro	33-31	KOSHINO Kazuhiko
IKEDA Atsuhiko	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	HAMADA Kikue
SHIMONOSONO Kozo	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	WATANABE Keiichi
TAKASAKI Shohei	37-27	KOSHINO Kazuhiko

2009-05-23: 32_King_State(Japan)

AKASHI Tomone	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	WATANABE Keiichi
KOSHINO Kazuhiko	41-23	SANO Matsuda
YAMAZAKI Nobuyuki	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	HISHIYAMA Yuichi
KOSHINO Kazuhiko	39-25	OHNO Atsuko

2009-05-16: 34_King_State(Japan)

KOSHINO Kazuhiko	36-28	KOMAGATA Masayuki
KOSHINO Kazuhiko	36-28	TATSUMI-IIJIMA Yukiko
KOSHINO Kazuhiko	34-29	ITO Junya
NAKAJIMA Tetsuya	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	ISHIKAWA Akira
KOSHINO Kazuhiko	40-24	SANO Yoko

2009-05-09: 50_Chiyarenshi(Japan)

IHARA Kunihiko	43-20	KOSHINO Kazuhiko
HAMADA Kikue	34-30	KOSHINO Kazuhiko
SUZUKI Yuta	34-30	KOSHINO Kazuhiko
OHNO Atsuko	35-29	KOSHINO Kazuhiko
IMAI Daiki	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	TANAKA Kazuo

2009-04-25: 30_King_State(Japan)

MIYAZAKI Yuji	36-28	KOSHINO Kazuhiko
NAGASAKI Hidekazu	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	ISHIWATA Yoshikazu
KOSHINO Kazuhiko	36-28	WATANABE Keiichi
KOSHINO Kazuhiko	35-29	HISHIYAMA Yuichi
KOSHINO Kazuhiko	35-29	SHINOHARA Jun

2009-04-12: 112_Nagareyama_Open(Japan)

HAGIKURA Yutaka	44-20	KOSHINO Kazuhiko
KOBAYASHI Manabu	37-27	KOSHINO Kazuhiko
WATANABE Keiichi	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	OKUDA Tsuyoshi

2009-03-29: Hausuohu_Open(Japan)

KATO Yuzuru	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KOBAYASHI Oh
KOSHINO Kazuhiko	33-31	IZUMI Takashi
MIYASHITA Naoto	33-31	KOSHINO Kazuhiko
SHINOHARA Chiaki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	MIYATA Kohei

2009-03-28: 30_Meijin_prelim(Japan)

ISAKA Tomoaki	33-31	KOSHINO Kazuhiko
TOJO Atsushi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	UNO Toshihiro
KOSHINO Kazuhiko	33-31	YASUDA Kenji
IZUMI Takashi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KAWAGUCHI Yuuki

2009-03-22: 111_Nagareyama_Open(Japan)

KOSHINO Kazuhiko	54-10	WATANABE Keiichi
KOSHINO Kazuhiko	43-21	TANAKA Atsushi
MIYAZAKI Yuji	40-24	KOSHINO Kazuhiko
WATAHIKI Kenta	38-26	KOSHINO Kazuhiko
SUZUKI Yuta	38-26	KOSHINO Kazuhiko

2009-03-08: 212_Kanagoe_ranking(Japan)

OKUDA Tsuyoshi	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	IHARA Kunihiko
KOSHINO Kazuhiko	40-24	NAGAMATSU Ryota
SATO Naohiro	39-25	KOSHINO Kazuhiko
KITAJIMA Masato	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KOBAYASHI Manabu

2009-03-01: 62_Kanagawa_Open_B(Japan)

KOBAYASHI Oh	34-30	KOSHINO Kazuhiko
TAKIGAWA Mitsuaki	34-30	KOSHINO Kazuhiko
KOYAHARA Naoto	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KOBAYASHI Manabu
KAWAGUCHI Yuuki	38-26	KOSHINO Kazuhiko
WATANABE Hideaki	36-28	KOSHINO Kazuhiko

2009-02-14: 47_Chiyarenshi_A(Japan)

SATO Yutaka	46-18	KOSHINO Kazuhiko
WATANABE Keiichi	52-12	KOSHINO Kazuhiko
SANO Yoko	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	HAMADA Kikue
KOSHINO Kazuhiko	47-17	ISHIWATA Yoshikazu
KOIDE Satoshi	37-27	KOSHINO Kazuhiko

2009-02-11: 29_King_State(Japan)

MIYAZAKI Yuji	34-30	KOSHINO Kazuhiko
TANAKA Shuntaro	won against	KOSHINO Kazuhiko
TANIGUCHI Yukiyoshi	33-31	KOSHINO Kazuhiko
SHINOHARA Chiaki	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	LI Ichyre
KOSHINO Kazuhiko	57-07	SHINOHARA Ryo

2009-02-07: 53_Shinagawa_Open(Japan)

IWATA Hiroyuki	41-23	KOSHINO Kazuhiko
OKUDA Tsuyoshi	43-21	KOSHINO Kazuhiko
TAKAHASHI Kanji	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	NAGAMATSU Yoshiyuki
NAGAMATSU Ryota	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	55-09	URAKAWA Tomohide

2009-01-25: 28_King_State(Japan)

TAKANASHI Yusuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	WATANABE Hideaki
KOSHINO Kazuhiko	60-04	SATO Ryu
MATSUYA Shinpei	39-25	KOSHINO Kazuhiko
NAGAO Hiroto	50-14	KOSHINO Kazuhiko
MITSUYA Nobuaki	36-28	KOSHINO Kazuhiko

2009-01-17: 30_King_State_A(Japan)

WATANABE Hideaki	36-28	KOSHINO Kazuhiko
SATO Koichiro	37-27	KOSHINO Kazuhiko
WATANABE Keiichi	48-16	KOSHINO Kazuhiko
HAMADA Kikue	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	TAKEDA Kyoko

2009-01-11: 110_Nagareyama_Open(Japan)

KOSHINO Kazuhiko	41-23	ISHII Kiyotaka
KOSHINO Kazuhiko	38-26	MATSUYA Shinpei
IWATA Hiroyuki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	KAWAGUCHI Yuuki
KOSHINO Kazuhiko	50-14	KURACHI Takayuki

2009-01-04: 61_Kanagawa_Open_B(Japan)

NODA Bintatsu	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TOSAKA Hideki
SUZUKI Yuta	49-15	KOSHINO Kazuhiko
SAWAKI Yusuke	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	YAMABE Yun
KOSHINO Kazuhiko	34-30	OHTAKE Kosuke

2008-12-28: 27_King_State(Japan)

KOSHINO Kazuhiko	62-02	KOBAYASHI Syunjiro
KOSHINO Kazuhiko	37-27	NAGASAKI Hidekazu
IIJIMA Takamune	36-28	KOSHINO Kazuhiko
ITO Junya	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	IZUMI Takashi
KOSHINO Kazuhiko	38-26	SUKO Masayuki

2008-12-23: 109_Nagareyama_Open(Japan)

KOSHINO Kazuhiko	34-30	ISHII Kiyotaka
KOSHINO Kazuhiko	48-16	TOKI Hidenobu
IZUMI Takashi	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	SATO Yuri
KOBAYASHI Makoto	48-16	KOSHINO Kazuhiko

2008-12-20: 29_King_State_A(Japan)

KOSHINO Kazuhiko	45-19	SUZUKI Yuta
NARIYA Makoto	55-09	KOSHINO Kazuhiko
SATO Koichiro	50-14	KOSHINO Kazuhiko
NAGANO Yasushi	50-14	KOSHINO Kazuhiko
KOSHINO Kazuhiko	53-11	HAMADA Kikue
KOSHINO Kazuhiko	35-29	KOIDE Satoshi

2008-12-07: 12_Ohu_Open(Japan)

ITAGAKI Kenichi	36-28	KOSHINO Kazuhiko
SUGISAKI Harumi	36-28	KOSHINO Kazuhiko
NOBUKAWA Hiroki	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	SATO Tetsuya
KOBAYASHI Syunjiro	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	KOYAHARA Naoto

2008-12-06: 52_Shinagawa_open(Japan)

SUZUKI Yuta	33-31	KOSHINO Kazuhiko
WATANABE Hideaki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	ISHIKAWA Akira
SANO Yoko	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	SUGISAKI Harumi
WATANABE Keiichi	44-20	KOSHINO Kazuhiko

2008-11-29: 25_King_State(Japan)

SATO Koichiro	36-28	KOSHINO Kazuhiko
KAWAGUCHI Genki	37-27	KOSHINO Kazuhiko
TANAKA Atsushi	57-07	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	ISHIWATA Yoshikazu
KOSHINO Kazuhiko	45-19	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	41-23	OHNO Atsuko

2008-11-23: 24_King_State(Japan)

KOSHINO Kazuhiko	38-26	KIUCHI Hideyuki
KOSHINO Kazuhiko	35-29	HISHIYAMA Yuichi
SAWAKI Yusuke	41-23	KOSHINO Kazuhiko
NAKAMURA Yuya	56-08	KOSHINO Kazuhiko
SUKO Masayuki	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	ISHIHARA Makoto

2008-11-08: 45_Chiyarenshi_A(Japan)

SATAKE Yosuke	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	ASAHINA Satoshi
WATANABE Hideaki	45-19	KOSHINO Kazuhiko
WAKIMOTO Naoyuki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	SATO Ryu
KOSHINO Kazuhiko	33-31	HISHIYAMA Yuichi

2008-11-03: 23_King_State(Japan)

KOSHINO Kazuhiko	35-29	TANIGUCHI Yukiyoshi
NOBUKAWA Hiroki	36-28	KOSHINO Kazuhiko
NAKAMURA Yuya	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	TATSUMI-IIJIMA Yukiko
SUKO Masayuki	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	IIJIMA Takamune

2008-11-02: 60_Kanagawa_B(Japan)

OZAWA Kou	46-18	KOSHINO Kazuhiko
ISHIWATA Yoshikazu	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	TAKIGAWA Mitsuaki
SATO Tetsuya	40-24	KOSHINO Kazuhiko
YAMAMURA Yuuki	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	37-27	TAKEDA Kyoko

2008-11-01: 51_Shinagawa_open(Japan)

HIKARU Hidemi	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	SAKURAI Takeuchi
KOSHINO Kazuhiko	40-24	YAMANOUCHI Atsushi
WATANABE Keiichi	34-30	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	35-29	KOSHINO Kazuhiko
WATANABE Hideaki	35-29	KOSHINO Kazuhiko

2008-10-13: 107_Nagareyama_Open(Japan)

KOSHINO Kazuhiko	55-09	SANO Joichiro
MIYAZAKI Yuji	47-17	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	ISHII Kiyotaka
KOSHINO Kazuhiko	39-25	KANAZAWA Kota
KOSHINO Kazuhiko	50-14	WAKIMOTO Naoyuki

2008-10-12: 21_King_State(Japan)

KAWAGUCHI Genki	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	35-29	NAGASHIMA Kazuhito
KOSHINO Kazuhiko	33-31	KOMAGATA Masayuki
KOSHINO Kazuhiko	38-26	SATO Koichiro
TAKANASHI Yusuke	39-25	KOSHINO Kazuhiko

2008-10-11: 44_Chiyarenshi_A(Japan)

WATANABE Hideaki	won against	KOSHINO Kazuhiko
SUZUKI Yuta	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	SAKURAI Takeuchi
KOSHINO Kazuhiko	33-31	KURAHASHI Satoshi
KOSHINO Kazuhiko	41-23	TSUKAMOTO Kazuma
WAKIMOTO Naoyuki	42-22	KOSHINO Kazuhiko

2008-09-28: 4_Chiba_Open(Japan)

SANO Yoko	44-20	KOSHINO Kazuhiko
TANIDA Keiko	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	OHTAKE Kosuke
SUZUKI Yuta	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	KOBAYASHI Makoto
KOSHINO Kazuhiko	37-27	KOBAYASHI Manabu

2008-09-23: 20_King_state_Open(Japan)

KOSHINO Kazuhiko	54-10	SATO Tetsuya
SATO Koichiro	50-14	KOSHINO Kazuhiko
ISHIKAWA Akira	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	KIUCHI Hideyuki
SUZUKI Yuta	40-24	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	41-23	KOSHINO Kazuhiko

2008-09-15: 19_King_state_Open(Japan)

KOIDE Satoshi	47-17	KOSHINO Kazuhiko
YAMADA Goro	36-28	KOSHINO Kazuhiko
NISHIYAMA Momoko	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	MASUDA Letaka
KOSHINO Kazuhiko	42-22	SHINOHARA Chiaki
KOSHINO Kazuhiko	33-31	SUZUKI Yuta

2008-09-13: 43_Chiyarenshi_Open_A(Japan)

TSUKAMOTO Kazuma	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	KOBAYASHI Manabu
SATO Tetsuya	35-29	KOSHINO Kazuhiko
KOSHINO Kazuhiko	51-13	SATO Ryu
KOSHINO Kazuhiko	49-15	SATAKE Yosuke
KOSHINO Kazuhiko	33-31	SUZUKI Yuta

2008-09-07: 59_Kanagawa_Open_B(Japan)

IWATA Hiroyuki	45-19	KOSHINO Kazuhiko
OHMORI Keita	41-23	KOSHINO Kazuhiko
TAKEDA Kyoko	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	MORINAGA Syou
ITAGAKI Kenichi	34-30	KOSHINO Kazuhiko
NAKAYAMA Takahiro	35-29	KOSHINO Kazuhiko

2008-09-06: 49_Shinagawa_open(Japan)

WATANABE Keiichi	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	HISHIYAMA Yuichi
KOSHINO Kazuhiko	43-21	HAMADA Kikue
OHUCHI Yasuhiro	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	HIKARU Hidemi
KOSHINO Kazuhiko	36-28	TATSUMI-IIJIMA Yukiko

2008-08-30: 18_King_state_Open(Japan)

SANO Yoko	40-24	KOSHINO Kazuhiko
SAKAMOTO Yutsuka	39-25	KOSHINO Kazuhiko
NAKANO Jo	48-16	KOSHINO Kazuhiko
SATO Tetsuya	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	HIRAI Yu
KOSHINO Kazuhiko	44-20	ISHIKAWA Akira

2008-08-24: 3_Ouza_sen(Japan)

WATANABE Hajime	44-20	KOSHINO Kazuhiko
SAKAGUCHI Kazuhiro	58-06	KOSHINO Kazuhiko
UEDA Mikiya	36-28	KOSHINO Kazuhiko
UNO Toshihiro	50-14	KOSHINO Kazuhiko
OHTAKE Kosuke	35-29	KOSHINO Kazuhiko
IMAI Daiki	39-25	KOSHINO Kazuhiko

2008-08-16: 25_King_State_special_A(Japan)

KOSHINO Kazuhiko	45-19	HAMADA Kikue
KOSHINO Kazuhiko	39-25	WATANABE Keiichi
KOSHINO Kazuhiko	33-31	MURAKAMI Takeshi
SATO Koichiro	37-27	KOSHINO Kazuhiko
SAITO Riki	45-19	KOSHINO Kazuhiko
ENOMOTO Yasuhiro	40-24	KOSHINO Kazuhiko

2008-08-10: 106_Nagareyama_Open(Japan)

KOSHINO Kazuhiko	44-20	KAWADA Masaki
KOSHINO Kazuhiko	41-23	OHUCHI Yasuhiro
OKUDA Tsuyoshi	41-23	KOSHINO Kazuhiko
KOSHINO Kazuhiko	38-26	HAGIKURA Yutaka
KOSHINO Kazuhiko	33-31	SATAKE Yosuke

2008-08-09: 42_Chiyarenshi_Open_A(Japan)

SUZUKI Kenta	34-30	KOSHINO Kazuhiko
KOBAYASHI Oh	54-10	KOSHINO Kazuhiko
KOSHINO Kazuhiko	43-21	KIMIMATSO Rkirami
KOSHINO Kazuhiko	57-07	SATO Ryu
ISHIMOTO Kazuya	34-30	KOSHINO Kazuhiko
WATANABE Keiichi	34-30	KOSHINO Kazuhiko

2008-08-03: Yokohama_Open(Japan)

KOSHINO Kazuhiko	53-11	KOBAYASHI Syunjiro
KOSHINO Kazuhiko	36-28	TSUKAMOTO Kazuma
SAITO Riki	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	YAMAMURA Yuuki
KOSHINO Kazuhiko	33-31	KAWAGUCHI Yuuki
SATO Koichiro	39-25	KOSHINO Kazuhiko

2008-08-02: 48_Shinagawa_open(Japan)

KOSHINO Kazuhiko	46-18	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	35-29	SHIMONOSONO Kozo
NAKAJIMA Tetsuya	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	OKUDA Tsuyoshi
TATSUMI-IIJIMA Yukiko	39-25	KOSHINO Kazuhiko
SAITO Riki	53-11	KOSHINO Kazuhiko

2008-07-27: 17_King_state_Open(Japan)

KOSHINO Kazuhiko	47-17	MORITA Yutsuka
IWATA Hiroyuki	35-29	KOSHINO Kazuhiko
SAWADA Tomohiro	40-24	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	YAMAMURA Yuuki
NAGANO Yasushi	43-21	KOSHINO Kazuhiko
MATSUYA Shinpei	36-28	KOSHINO Kazuhiko

2008-07-13: 25th Kawagoe 7th period queen game(Japan)

TODA Tomoya	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TANAKA Junya
KOSHINO Kazuhiko	lost to	WATANABE Keiichi
KOSHINO Kazuhiko	lost to	KITAJIMA Masato
KOSHINO Kazuhiko	won against	SHIIKI Isamu
KOSHINO Kazuhiko	won against	IIJIMA Takamune

2008-07-05: 47th Kanagawa seaside Open(Japan)

ASANO Yuki	lost to	KOSHINO Kazuhiko
AZUMA Hideki	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NAKANO Yasuhide
KOSHINO Kazuhiko	lost to	KURACHI Takayuki
TANIDA Kunihiko	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SUGISAKI Harumi

2008-07-05: 47_Shinagawa_open(Japan)

KOSHINO Kazuhiko	43-21	ASANO Yuki
AZUMA Hideki	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	NAKANO Yasuhide
KURACHI Takayuki	34-30	KOSHINO Kazuhiko
TANIDA Kunihiko	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	SUGISAKI Harumi

2008-06-28: 16th King state special(Japan)

KOSHINO Kazuhiko	won against	MORIKAWA Masayoshi
KOSHINO Kazuhiko	won against	WATANABE Hideaki
NAGASAKI Hidekazu	won against	KOSHINO Kazuhiko
TAKANASHI Yusuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NODA Bintatsu
KOSHINO Kazuhiko	won against	YAMAKAWA Takashi

2008-06-22: North Kanto Conference(Japan)

TAKASE Humiya	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	GOTO Masahiro
KOSHINO Kazuhiko	lost to	KURITA Seiya
KOSHINO Kazuhiko	won against	KAZUHISA Akira
SATAKE Yosuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	URA Satoru

2008-06-15: 15th King state special(Japan)

KOSHINO Kazuhiko	won against	KOIDE Satoshi
KOSHINO Kazuhiko	won against	TESAKI Satoru
TANAKA Atsushi	won against	KOSHINO Kazuhiko
IWATA Hiroyuki	won against	KOSHINO Kazuhiko
GOTO Masahiro	lost to	KOSHINO Kazuhiko
OZAWA Kou	won against	KOSHINO Kazuhiko

2008-06-08: 210th Kawagoe ranking game(Japan)

TODA Tomoya	won against	KOSHINO Kazuhiko
URUSHIHARA Kazuhiro	lost to	KOSHINO Kazuhiko
KOSHINO Kazuhiko	lost to	OHUCHI Yasuhiro
KOSHINO Kazuhiko	won against	TANAKA Junya
KURACHI Takayuki	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NAGAMATSU Ryota

2008-05-31: 1st Shinagawa age championship (above 5609)(Japan)

KOSHINO Kazuhiko	won against	MORI Takahiro
OSHIMIZU Takanori	lost to	KOSHINO Kazuhiko
IIJIMA Takamune	won against	KOSHINO Kazuhiko
SATAKE Yosuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	WATANABE Keiichi
SATO Yuri	won against	KOSHINO Kazuhiko

2008-05-18: 210th Kawagoe tournament(Japan)

NAKAMURA Yuya	won against	KOSHINO Kazuhiko
KITAJIMA Masato	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SUGISAKI Harumi
KURACHI Takayuki	won against	KOSHINO Kazuhiko
GOTO Masahiro	won against	KOSHINO Kazuhiko

2008-05-11: 13th King state special (Japan)

KOSHINO Kazuhiko	won against	AMIKAZU Ayama
KOBAYASHI Manabu	won against	KOSHINO Kazuhiko
OZAWA Kou	won against	KOSHINO Kazuhiko
GOTO Masahiro	won against	KOSHINO Kazuhiko
TANIDA Keiko	lost to	KOSHINO Kazuhiko
NAGAMATSU Ryota	won against	KOSHINO Kazuhiko

2008-04-27: 11th king state special (Japan)

SATO Koichiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KOBAYASHI Syunjiro
TATSUMI-IIJIMA Yukiko	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KURAMOCHI Yuta
TAKANASHI Yusuke	won against	KOSHINO Kazuhiko
TAKEDA Kyoko	won against	KOSHINO Kazuhiko

2008-04-13: 103rd Nagareyama open(Japan)

WAKIMOTO Naoyuki	won against	KOSHINO Kazuhiko
SATO Tetsuya	lost to	KOSHINO Kazuhiko
NAGAMATSU Ryota	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	IBARA Kunihiko
FUNATSU Asuka	won against	KOSHINO Kazuhiko

2008-04-12: 38th challenge cup A(Japan)

KOSHINO Kazuhiko	won against	SATO Yuri
OKAMOTO Akihiko	lost to	KOSHINO Kazuhiko
KITOU Shota	won against	KOSHINO Kazuhiko
UEDA Mikiya	won against	KOSHINO Kazuhiko
ISHIHARA Makoto	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SUZUKI Yuta

2008-03-23: 29_Meijin(Japan)

KOSHINO Kazuhiko	33-31	NAKANO Jo
TAKIZAWA Masaki	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	WATANABE Hideaki
KOSHINO Kazuhiko	33-31	GOTO Masahiro
TAMAKI Kyotaro	33-31	KOSHINO Kazuhiko

2008-03-08: 37th challenge cup A(Japan)

KURAMOCHI Yuta	won against	KOSHINO Kazuhiko
UEDA Mikiya	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SATO Tetsuya
KOSHINO Kazuhiko	won against	SANO Yoko
KOSHINO Kazuhiko	won against	SEKIGUCHI Shinya
WATANABE Hideaki	won against	KOSHINO Kazuhiko

2008-03-02: 57th Kanagawa Open(Japan)

INOUE Shirakawa	lost to	KOSHINO Kazuhiko
YAMAKAWA Takashi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	YAMAGUCHI Yoshiaki
KOSHINO Kazuhiko	lost to	TATSUMI-IIJIMA Yukiko
KOSHINO Kazuhiko	won against	TANAKA Atsushi
KOSHINO Kazuhiko	won against	YAMABE Yun

2008-03-01: 43_Shinagawa_open(Japan)

SAWAKI Yusuke	35-29	KOSHINO Kazuhiko
KURAMOCHI Yuta	38-26	KOSHINO Kazuhiko
TANAKA Atsushi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	NODA Yuji
KOSHINO Kazuhiko	40-24	SUGISAKI Harumi
SATO Tetsuya	43-21	KOSHINO Kazuhiko

2008-02-24: 9th king state special(Japan)

KOSHINO Kazuhiko	won against	IIJIMA Takamune
KOSHINO Kazuhiko	won against	TATSUMI-IIJIMA Yukiko
TSUKAMOTO Kazuma	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	AZUMA Hideki
WATAHIKI Kenta	won against	KOSHINO Kazuhiko
SATAKE Yosuke	won against	KOSHINO Kazuhiko

2008-02-17: 2008 Tokyo expert game(Japan)

AZUMA Hideki	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SHINOHARA Jun
NAKAMURA Yuya	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NISHIYAMA Momoko
ISHIKAWA Akira	32-32	KOSHINO Kazuhiko
KOZUKA Katsuhiko	won against	KOSHINO Kazuhiko

2008-02-10: 8th king state special(Japan)

KOSHINO Kazuhiko	won against	SANO Yoko
NAGASAKI Hidekazu	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SATO Koichiro
KOSHINO Kazuhiko	won against	NAGANO Yasushi
KOSHINO Kazuhiko	won against	WATAHIKI Kenta
OZAWA Kou	won against	KOSHINO Kazuhiko

2008-01-27: 7th King state special (Japan)

TAMAKI Kyotaro	won against	KOSHINO Kazuhiko
TAKAHASHI Kanji	won against	KOSHINO Kazuhiko
MURAKAMI Takeshi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SATO Yuri
KOSHINO Kazuhiko	won against	KAWAGUCHI Yuuki
KOSHINO Kazuhiko	won against	GOTO Masahiro

2008-01-19: 19th King state cup advanced(Japan)

SATO Koichiro	lost to	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	WATANABE Hideaki
NAKAJIMA Tetsuya	lost to	KOSHINO Kazuhiko
MURAKAMI Takeshi	won against	KOSHINO Kazuhiko
ITO Junya	won against	KOSHINO Kazuhiko
WATAHIKI Kenta	won against	KOSHINO Kazuhiko

2008-01-12: 35th challenge cup advanced(Japan)

KAWAGUCHI Genki	won against	KOSHINO Kazuhiko
MORI Takahiro	won against	KOSHINO Kazuhiko
WATANABE Keiichi	lost to	KOSHINO Kazuhiko
SATO Koichiro	won against	KOSHINO Kazuhiko
SANO Yoko	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	lost to	MASUDA Letaka

2008-01-06: Shinagawa Open 2008 advanced(Japan)

KOSHINO Kazuhiko	won against	KOYAMA Yasuyuki
NAGASHIMA Kazuhito	won against	KOSHINO Kazuhiko
OHNO Atsuko	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	YAMAZAKI Nobuyuki
SAWADA Tomohiro	32-32	KOSHINO Kazuhiko
YOSHIDA Yoshiaki	won against	KOSHINO Kazuhiko

2007-11-25: 206th Kawagoe ranking game(Japan)

KOSHINO Kazuhiko	won against	KAWAGUCHI Genki
TAKIGAWA Mitsuaki	won against	KOSHINO Kazuhiko
KITAJIMA Masato	32-32	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	NISHIYAMA Momoko
SATAKE Yosuke	won against	KOSHINO Kazuhiko
SATO Tomoyuki	won against	KOSHINO Kazuhiko

2007-11-04: 55th Kanagawa Open A(Japan)

KOSHINO Kazuhiko	won against	NAKAMURA Shunsuke
KURITA Seiya	won against	KOSHINO Kazuhiko
NODA Bintatsu	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KOBAYASHI Manabu
KOSHINO Kazuhiko	won against	NAKAMURA Yuya
WAKIMOTO Naoyuki	won against	KOSHINO Kazuhiko

2007-11-03: 41_Shinagawa_open(Japan)

OKUDA Tsuyoshi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	IIJIMA Takamune
SATO Koichiro	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	ISHIKAWA Akira
KOSHINO Kazuhiko	43-21	TAKEDA Kyoko
WATAHIKI Kenta	53-11	KOSHINO Kazuhiko

2007-10-14: 9th Ueno Open(Japan)

KOSHINO Kazuhiko	won against	SHIMONOSONO Kozo
NAKAJIMA Tetsuya	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	KURITA Seiya
GOTO Hiroshi	won against	KOSHINO Kazuhiko
KINOSHITA Hiroko	won against	KOSHINO Kazuhiko

2007-10-06: 40th Shinagawa seaside opening(Japan)

SAWAKI Yusuke	won against	KOSHINO Kazuhiko
ITO Junya	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	won against	WATANABE Keiichi
KOSHINO Kazuhiko	won against	MASUDA Letaka
TATSUMI-IIJIMA Yukiko	won against	KOSHINO Kazuhiko

2007-10-06: 40_Shinagawa_open(Japan)

SAWAKI Yusuke	49-15	KOSHINO Kazuhiko
ITO Junya	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	TAKIGAWA Mitsuaki
KOSHINO Kazuhiko	40-24	WATANABE Keiichi
KOSHINO Kazuhiko	42-22	MASUDA Letaka
TATSUMI-IIJIMA Yukiko	39-25	KOSHINO Kazuhiko

2007-09-30: 3rd Chiba Open(Japan)

KOSHINO Kazuhiko	won against	TSUCHIYA Shotaro
KOSHINO Kazuhiko	lost to	TAKASHIMA Ryoji
IZUMI Shinichi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	HIRANO Keita
KOSHINO Kazuhiko	won against	HADA Jun
NAGAO Hiroto	won against	KOSHINO Kazuhiko

2007-09-23: 2nd giant king special(Japan)

KOSHINO Kazuhiko	won against	ISHII Takao
SATAKE Yosuke	won against	KOSHINO Kazuhiko
SAWAKI Yusuke	32-32	KOSHINO Kazuhiko
ISHIHARA Makoto	32-32	KOSHINO Kazuhiko
NAGASAKI Hidekazu	won against	KOSHINO Kazuhiko
TANAKA Atsushi	won against	KOSHINO Kazuhiko

2007-09-08: 31st challenge cup - A(Japan)

KOSHINO Kazuhiko	lost to	KOBAYASHI Manabu
KOSHINO Kazuhiko	lost to	WATANABE Hideaki
KOSHINO Kazuhiko	won against	KOIDE Satoshi
KOSHINO Kazuhiko	lost to	HISHIYAMA Yuichi
KOSHINO Kazuhiko	won against	ISAKA Tomoaki
KOSHINO Kazuhiko	won against	YAMAMOTO Kunihiro

2007-09-02: 39th Shinagawa seaside tournament(Japan)

ENOMOTO Yasuhiro	lost to	KOSHINO Kazuhiko
TANIDA Kunihiko	won against	KOSHINO Kazuhiko
ITO Junya	won against	KOSHINO Kazuhiko
MURAKAMI Takeshi	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	SATO Tetsuya
KOIDE Satoshi	won against	KOSHINO Kazuhiko

2007-09-01: 39_Shinagawa_open(Japan)

KOSHINO Kazuhiko	46-18	ENOMOTO Yasuhiro
TANIDA Kunihiko	41-23	KOSHINO Kazuhiko
ITO Junya	49-15	KOSHINO Kazuhiko
MURAKAMI Takeshi	56-08	KOSHINO Kazuhiko
KOSHINO Kazuhiko	54-10	SATO Tetsuya
KOIDE Satoshi	38-26	KOSHINO Kazuhiko

2007-07-15: Japanese Othello Championship(Japan)

SAKAGUCHI Kazuhiro	won against	KOSHINO Kazuhiko
WATANABE Hajime	won against	KOSHINO Kazuhiko
MATSUYA Shinpei	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	IWATA Hiroyuki
KURACHI Takayuki	won against	KOSHINO Kazuhiko

2007-07-07: 37_Shinagawa_open(Japan)

NODA Bintatsu	38-26	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	KAWAGUCHI Genki
NAGASAKI Hidekazu	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	KIMIZUKA Yuki
KOSHINO Kazuhiko	34-30	TANIDA Kunihiko
KOSHINO Kazuhiko	39-25	IIJIMA Takamune

2007-06-10: 6th Ueno Open(Japan)

SAWADA Tomohiro	won against	KOSHINO Kazuhiko
WATANABE Hajime	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	DOJUN Makiko
KOSHINO Kazuhiko	won against	SUGISAKI Harumi
TANAKA Michiko	won against	KOSHINO Kazuhiko

2007-05-13: 5th Ueno Open(Japan)

KOSHINO Kazuhiko	won against	NAGAO Hiroto
NAKAJIMA Tetsuya	won against	KOSHINO Kazuhiko
KOIDE Satoshi	won against	KOSHINO Kazuhiko
SATO Koichiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	OHTAKE Kosuke

2007-03-25: 28_Meijin_finals(Japan)

KOSHINO Kazuhiko	48-16	YOSHIKAWA Chiaki
KOSHINO Kazuhiko	33-31	TODA Tomoya
KAMEMOTO Osamu	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	KATORI Michihiro
SAKAGUCHI Kazuhiro	35-29	KOSHINO Kazuhiko
YAMAGUCHI Yoshiaki	38-26	KOSHINO Kazuhiko

2007-03-04: 52nd Kanagawa Open A(Japan)

KOSHINO Kazuhiko	won against	WATAHIKI Kenta
TANAKA Shuntaro	32-32	KOSHINO Kazuhiko
HIGUCHI Sayuki	won against	KOSHINO Kazuhiko
SATO Koichiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	HAMADA Kikue
MATSUZAWA Atsushi	won against	KOSHINO Kazuhiko

2007-03-03: 33_Shinagawa_open(Japan)

KOSHINO Kazuhiko	40-24	KOYAMA Yasuyuki
NAKAJIMA Tetsuya	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	41-23	SATAKE Yosuke
KOSHINO Kazuhiko	33-31	IIJIMA Takamune
KOSHINO Kazuhiko	37-27	USURAURA Yusuke
KOMAGATA Masayuki	45-19	KOSHINO Kazuhiko

2007-01-07: 51st Kanagawa Open A(Japan)

TAKANASHI Yusuke	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	OGAWA Daisuke
OKUDA Tsuyoshi	won against	KOSHINO Kazuhiko
OHNO Atsuko	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAKEDA Kyoko
KOSHINO Kazuhiko	won against	NISHIYAMA Momoko

2006-12-02: 31_Shinagawa_open(Japan)

TANAKA Amane	42-22	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	MORI Takahiro
NAKANO Maseru	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	HAMADA Kikue
KOSHINO Kazuhiko	55-09	WATANABE Keiichi
KOSHINO Kazuhiko	39-25	KOYAMA Yasuyuki

2006-11-25: 3rd Tatebayashi Open(Japan)

TAKASE Humiya	won against	KOSHINO Kazuhiko
OHUCHI Yasuhiro	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	TAKIGAWA Mitsuaki
MORI Takahiro	won against	KOSHINO Kazuhiko
OMODERA Osamu	won against	KOSHINO Kazuhiko

2006-11-04: 30_Shinagawa_open(Japan)

TAKANASHI Yusuke	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	SHIMIZU Kenko
KOSHINO Kazuhiko	54-10	SANO Yoko
WATANABE Hajime	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	OKAWA Akira
OHUCHI Yasuhiro	40-24	KOSHINO Kazuhiko

2006-09-02: 28_Shinagawa_open(Japan)

KOSHINO Kazuhiko	won against	HORIUCHI Keiko
NAKAMORI Hiroki	47-17	KOSHINO Kazuhiko
OKAMOTO Akihiko	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	47-17	KADOWAKI Norihiro
NOGAMI Yoshiyuki	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-29	KIMURA Masashi

2006-08-26: 1_Ouza_sen(Japan)

SAKAGUCHI Kazuhiro	56-08	KOSHINO Kazuhiko
KOSHINO Kazuhiko	32-32	TAMAIE Kotoe
TSUCHIDA Daisuke	34-30	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	SUDOU Mai
KOSHINO Kazuhiko	47-17	TAKASHIMA Ryoji
USURAURA Yusuke	54-10	KOSHINO Kazuhiko
NAKAMORI Chiaki	50-14	KOSHINO Kazuhiko

2006-08-05: 27_Shinagawa_open(Japan)

KOSHINO Kazuhiko	39-25	SATO Tetsuya
SATAKE Yosuke	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	36-28	ISHIHARA Makoto
SATO Koichiro	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	39-25	SANO Yoko
KOSHINO Kazuhiko	49-15	TAKEUCHI Kazuya

2006-06-04: 7th owa tournament(Japan)

KOSHINO Kazuhiko	lost to	TOSAKA Hideki
KOSHINO Kazuhiko	lost to	SANO Hidekazu
KOSHINO Kazuhiko	lost to	HIGUCHI Sayuki
KOSHINO Kazuhiko	won against	INOUE Masaru
KOSHINO Kazuhiko	won against	IKEDA Atsuhiko
KOSHINO Kazuhiko	won against	SATAKE Yosuke

2006-04-08: 23_Shinagawa_open(Japan)

KOBAYASHI Manabu	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	44-20	MIYAOKA Yuki
KOSHINO Kazuhiko	56-08	OKUDA Tsuyoshi
NAGASHIMA Kazuhito	48-16	KOSHINO Kazuhiko
TATSUMI-IIJIMA Yukiko	47-17	KOSHINO Kazuhiko
IIJIMA Takamune	35-29	KOSHINO Kazuhiko

2006-03-26: 27_Meijin(Japan)

NAGASAKI Hidekazu	64-00	KOSHINO Kazuhiko
KOSHINO Kazuhiko	64-00	UCHIDA Kiyoyuki
KOSHINO Kazuhiko	64-00	MIZUNO Keigo
KOSHINO Kazuhiko	64-00	NAKANO Maseru
KOSHINO Kazuhiko	64-00	NOGAMI Yoshiyuki
TAKIZAWA Masaki	64-00	KOSHINO Kazuhiko
SAWAKI Yusuke	64-00	KOSHINO Kazuhiko

2006-03-11: 22_Shinagawa_open(Japan)

KOSHINO Kazuhiko	34-30	TATSUMI-IIJIMA Yukiko
TAKEDA Kyoko	43-21	KOSHINO Kazuhiko
SATO Koichiro	53-11	KOSHINO Kazuhiko
KOSHINO Kazuhiko	49-15	MITSUYA Nobuaki
KOSHINO Kazuhiko	55-09	SATO Tetsuya
KOSHINO Kazuhiko	44-20	MORI Takahiro

2005-12-10: 20_Shinagawa_open(Japan)

NAGASHIMA Kazuhito	51-13	KOSHINO Kazuhiko
SUKO Masayuki	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	57-07	KOBAYASHI Oh
KOSHINO Kazuhiko	40-24	YASHIRO Miyabi
OKUDA Tsuyoshi	34-30	KOSHINO Kazuhiko
NAGUMO Natsuhiko	won against	KOSHINO Kazuhiko

2005-10-30: 7_large_Endo_open(Japan)

KOSHINO Kazuhiko	36-28	SHUICHI Tsuda
SAWAKI Yusuke	38-26	KOSHINO Kazuhiko
TAKASHIMA Ryoji	38-26	KOSHINO Kazuhiko
OKI Chikara	39-25	KOSHINO Kazuhiko
KOSHINO Kazuhiko	48-16	IMAI Taka
SUKO Masayuki	35-29	KOSHINO Kazuhiko

2005-07-03: Kana othello Open(Japan)

SAKA Hiroshi	won against	KOSHINO Kazuhiko
OGAWA Daisuke	lost to	KOSHINO Kazuhiko
KOSHINO Kazuhiko	lost to	YAMADA Daisuke
KOSHINO Kazuhiko	won against	YASHIRO Miyabi
KOSHINO Kazuhiko	won against	TAKEDA Kyoko
TOMINAGA Kenta	won against	KOSHINO Kazuhiko

2005-03-21: Shinagawa International 2005(Japan)

TAKASHIMA Ryoji	46-18	KOSHINO Kazuhiko
KOSHINO Kazuhiko	35-28	OSHIMIZU Takanori
WAKAMATSU Masamichi	33-31	KOSHINO Kazuhiko
ENOMOTO Yasuhiro	45-19	KOSHINO Kazuhiko
WATANABE Keiichi	37-27	KOSHINO Kazuhiko
KOSHINO Kazuhiko	45-19	NAKAYAMA Takahiro

2005-03-20: 26_Meijin(Japan)

KOSHINO Kazuhiko	42-22	OSHIMIZU Takanori
KOSHINO Kazuhiko	35-29	ITAGAKI Kenichi
KITAGAWA Kanya	44-20	KOSHINO Kazuhiko
KOSHINO Kazuhiko	34-30	SAKAGUCHI Kazuhiro
ARAKI Yasuyuki	37-27	KOSHINO Kazuhiko
OGURI Kenji	36-28	KOSHINO Kazuhiko
KOSHINO Kazuhiko	40-24	OHUCHI Yasuhiro

2005-02-20: 5th Chiyarenshi Open(Japan)

KODOMA Wataru	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	IKEDA Atsuhiko
MATSUMOTO Masaru	won against	KOSHINO Kazuhiko
KOSHINO Kazuhiko	won against	YAMAMOTO Kunihiro
KOSHINO Kazuhiko	won against	TAKAGI Kazutaka
TAKASAKI Shohei	won against	KOSHINO Kazuhiko

2004-03-27: 25_Meijin(Japan)

OMODERA Osamu	48-16	KOSHINO Kazuhiko
KOSHINO Kazuhiko	52-12	GOTO Mitsutaka
KOSHINO Kazuhiko	36-28	KAWAI Tokunao
KOSHINO Kazuhiko	47-17	NAGAI Kaku
KOSHINO Kazuhiko	34-30	YAMAGUCHI Toshiya

2004-03-27: 25_Meijin_finals(Japan)

KATORI Michihiro	45-19	KOSHINO Kazuhiko
KOSHINO Kazuhiko	42-22	OMODERA Osamu

2001-05-01: Meijin(Japan)

KURODA Takuji	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	MAEZIMA Tomiko
KITAJIMA Masato	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	TANAKA Michiko
KOSHINO Kazuhiko	33-31	YOSHIDA Taisaku
NAGAO Hiroto	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	ARAKI Kentaro

2000-04-01: Meijin(Japan)

ROSE Brian	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	KOSE Akira
NODA Bintatsu	33-31	KOSHINO Kazuhiko
KOSHIN Shuichi	33-31	KOSHINO Kazuhiko
KOSHINO Kazuhiko	33-31	OZAKI Mineho
KOSHINO Kazuhiko	33-31	ARAKI Kentaro
NAGUMO Natsuhiko	33-31	KOSHINO Kazuhiko

KOSHINO Kazuhiko (Japan)

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