| # |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
| 1 | Oya Koichi | 7p | Ryu Shikun | 5p | B+2.5 | 197 | 1993-04-29 | Shinjin-O, 18th | Quaterfinal - 1 | | 2 | Oya Koichi | 9p | Ryu Shikun | 9p | B+4,5 | 277 | 2004-12-20 | Ryusei Cup, 14th | Block F, Game 08 | | 3 | Ryu Shikun | 9p | Oya Koichi | 9p | B+R | 209 | 2008-12-11 | Ryusei, 18th | block-G | | 4 | Sakai Hideyuki | 8p | Oya Koichi | 9p | B+1.5 | 107 | 2001-07-09 | Phoenix Cup, 2nd | Semifinal | | 5 | Oya Koichi | 6p | Sakai Takeshi | 9p | W+R | 47 | 1989-01-09 | Fujitsu Cup, 02nd | Preliminaries | | 6 | Sakata Eio | 9p | Oya Koichi | 7p | B+R | 191 | 1992-07-30 | Judan, 31st | Losers' Section, 1-1 | | 7 | Oya Koichi | 7p | Shiraishi Yutaka | 9p | W+1 | 244 | 1991-10-24 | Gosei, 17th | 1-07 | | 8 | Shuto Shun | 7p | Oya Koichi | 9p | W+R | 166 | 2013-01-17 | Tengen, 39th | | | 9 | Oya Koichi | 9p | So Yokoku | 8p | W+1.5 | 271 | 2013-02-07 | Tengen, 39th | 1 | | 10 | Oya Koichi | 6p | Sonoda Yuichi | 9p | B+3.5 | 249 | 1987-03-26 | Oza, 35th | Round 1-2 | | 11 | Oya Koichi | 9p | Takao Shinji | 9p | W+13.5 | 284 | 2006-02-07 | Ryusei Cup, 15th | Block B, Game 09 | | 12 | Oya Koichi | 9p | Takao Shinji | 9p | W+R | 136 | 2007-12-06 | Gosei, 33rd | Round 1 | | 13 | Oya Koichi | 9p | Takao Shinji | 9p | W+R | 226 | 2011-11-17 | Tengen, 38th, preliminary tournament A | Final | | 14 | Takao Shinji | 9p | Oya Koichi | 9p | B+R | 151 | 2011-12-03 | Daiwa Cup, 07th | 2 | | 15 | Takemiya Masaki | 9p | Oya Koichi | 9p | W+0.5 | 251 | 1998-01-08 | Oza, 46th | Preliminaries, 3-2 | | 16 | Oya Koichi | 9p | Takemiya Masaki | 9p | W+R | 164 | 2006-12-07 | Tengen, 33rd | 1 | | 17 | Takemiya Masaki | 9p | Oya Koichi | 9p | W+2.5 | 271 | 2009-01-15 | | | | 18 | Tokimoto Hajime | 8p | Oya Koichi | 8p | B+9.5 | 338 | 1999-02-01 | Ryusei Cup, 08th | Block B, Game 13 | | 19 | Tono Hiroaki | 9p | Oya Koichi | 8p | B+R | 171 | 1998-01-01 | NHK Cup, 46th | 1-20 | | 20 | Oya Koichi | 9p | Tsuruyama Atsushi | 7p | B+7.5 | 307 | 2012-12-15 | Daiwa Cup, 08th | 2 | | 21 | Ushinohama Satsuo | 9p | Oya Koichi | 7p | B+2.5 | 286 | 1995-03-09 | Gosei, 20th | 1/8 Final - 5 | | 22 | Oya Koichi | 6p | Wang Jianhong | 7p | B+R | 183 | 1987-05-24 | China-Japan Go Exchange, 15th | Round 3 | | 23 | Oya Koichi | 9p | Whang Jinhyung | 1p ? | W+R | 156 | 2012-04-19 | LG Cup, 17th, integration preliminary tournament | | | 24 | Yamada Kimio | 6p | Oya Koichi | 7p | W+12.5 | 181 | 1994-03-17 | Gosei, 19th | 1/8 Final - 7 | | 25 | Oya Koichi | 8p | Yamada Kimio | 7p | W+R | 164 | 1997-02-27 | Oza, 45th | Preliminary Round 3-4 | | 26 | Oya Koichi | 8p | Yamada Kimio | 8p | B+1 | 215 | 2000-12-07 | Honinbo, 56th | League, game 11 | | 27 | Oya Koichi | 9p | Yamada Kimio | 9p | B+R | 177 | 2005-12-05 | Ryusei Cup, 15th | Block B, Game 06 | | 28 | Yamada Wakio | 6p | Oya Koichi | 7p | W+R | 124 | 1991-08-22 | Judan, 30th | Losers' Section, 1-3 | | 29 | Yamashita Keigo | 9p | Oya Koichi | 9p | W+R | 236 | 2012-11-17 | Daiwa Cup, 08th | 1 | | 30 | Oya Koichi | ? pro | Yang Hui | 7p | B+1.5 | 308 | 1987-06-03 | China-Japan Go Exchange, 15th | Round 7 | | 31 | Oya Koichi | ? pro | Yang Hui | 7p | B+0.5 | 231 | 1990-01-04 | China-Japan match | | | 32 | Oya Koichi | 7p | Yo Kagen | 7p | B+R | 195 | 1995-06-15 | Oteai, 1995 | game 05 | | 33 | Yo Kagen | 9p | Oya Koichi | 9p | B+R | 169 | 2007-03-15 | Ryusei Cup, 16th | block-D | | 34 | Oya Koichi | 2p | Yoda Norimoto | 3p | B+R | 131 | | | | | 35 | Oya Koichi | 5p | Yoda Norimoto | 6p | W+R | 198 | 1986-08-24 | Shin'ei, 17th | Final | | 36 | Oya Koichi | 7p | Yoda Norimoto | 8p | W+R | 158 | 1991-06-20 | Judan, 30th | 1-03 | | 37 | Oya Koichi | 8p | Yoda Norimoto | 9p | W+1.5 | 253 | 2000-01-13 | Oza, 48th | Preliminary Round 3-2 | | 38 | Oya Koichi | 9p | Yoda Norimoto | 9p | B+0.5 | 279 | 2006-09-10 | Ryusei Cup, 15th | 2 | | 39 | Yoda Norimoto | 9p | Oya Koichi | 9p | W+0.5 | 289 | 2008-11-27 | | | | 40 | Yoda Norimoto | 9p | Oya Koichi | 9p | B+R | 135 | 2012-01-12 | Ryusei, 21st | block-G | | 41 | Yokota Shigeaki | 9p | Oya Koichi | 9p | W+R | 188 | 2002-12-09 | Ryusei Cup, 12th | Block A, Game 07 | | 42 | Oya Koichi | 9p | Yokota Shigeaki | 9p | W+R | 186 | 2005-01-06 | Tengen, 31st | 1-07 | | 43 | Yu Bin | 6p | Oya Koichi | 6p | B+1.5 | 315 | 1987-05-28 | China-Japan Go Exchange, 15th | 5 | | 44 | Yuki Satoshi | 8p | Oya Koichi | 7p | B+R | 101 | 1993-07-01 | Shinjin-O, 18th | Semifinal - 1 | | 45 | Oya Koichi | 8p | Yuki Satoshi | 9p | B+R | 119 | 1998-04-02 | Oza, 46th | 1-01 | | 46 | Oya Koichi | 8p | Yuki Satoshi | 9p | W+2 | 237 | 2001-04-05 | Honinbo, 56th | League, game 28 | | 47 | Yuki Satoshi | 9p | Oya Koichi | 8p | B+5.5 | 249 | 2001-04-29 | NHK Cup, 49th | 1 | | 48 | Yuki Satoshi | 9p | Oya Koichi | 9p | B+R | 187 | 2009-08-20 | Honinbo, 65th, preliminary tournament | Final | | 49 | Oya Koichi | 9p | Yuki Satoshi | 9p | W+10.5 | 292 | 2013-01-19 | Daiwa Cup, 08th | 3 | | 50 | Zhang Wendong | 5p | Oya Koichi | 6p | W+R | 210 | 1987-05-22 | China-Japan Go Exchange, 15th | Round 2 | | 51 | Oya Naoki | 7p | Saijo Masataka | 8p | B+8,5 | 233 | 1996-11-14 | Gosei, 22nd | 1/16 Final - 02 | | 52 | Oyama Kunio | 9p | Çű¾¿í | 9p | B+R | 191 | 2012-07-11 | | | | 53 | Cho Chikun | 9p | Oyama Kunio | 9p | B+R | 143 | 1984-11-01 | Gosei, 10th | 1 | | 54 | Oyama Kunio | 6p | Go Seigen | 9p | W+5 | 237 | 1968-01-05 | Saturday Club quickplay games sponsored by Igo Shincho | | | 55 | Oyama Kunio | 9p | Goto Shungo | 6p | B+R | 99 | 1987-10-08 | Gosei, 13th | Round 1-11 | | 56 | Goto Shungo | 6p | Oyama Kunio | 9p | B+2.5 | 229 | 1988-11-02 | Tengen, 14th | 1-04 | | 57 | Oyama Kunio | 9p | Hane Naoki | 7p | W+9 | 219 | 1999-02-18 | Oza, 47th | Preliminaries, 3-4 | | 58 | Hane Yasumasa | 9p | Oyama Kunio | 9p | B+10.5 | 189 | 1988-06-14 | NHK Cup, 36th | 1 | | 59 | Haruyama Isamu | 9p | Oyama Kunio | 9p | W+7.5 | 237 | 1991-04-15 | Ryusei Cup, 01st | Block C, Game 20 | | 60 | Oyama Kunio | 8p | Hashimoto Utaro | 9p | B+3.5 | 266 | 1974-08-21 | All-Japan First Place Championship, 5th | Preliminary | | 61 | Oyama Kunio | 9p | Hidaka Toshiyuki | 6p | B+R | 81 | 1988-07-18 | IBM Lightning Go Championship, 1st | Quaterfinal - 4 | | 62 | Oyama Kunio | 9p | Hisajima Kunio | 7p | W+0.5 | 242 | 1987-02-12 | Tengen, 13th | 1-02 | | 63 | Honda Kunihisa | 9p | Oyama Kunio | 9p | B+0.5 | 245 | 1975-01-11 | Kansai Ki-in First Place Championship, 19th | Title match, game 3 | | 64 | Imamura Toshiya | 6p | Oyama Kunio | 9p | W+R | 150 | 1990-02-08 | Tengen, 16th | 1-05 | | 65 | Ishida Yoshio | 9p | Oyama Kunio | 9p | B+R | 205 | 1988-04-10 | IBM Lightning Go Championship, 1st | Semifinal - 2 | | 66 | Ishida Yoshio | 9p | Oyama Kunio | 9p | B+0.5 | 241 | 1992-04-06 | Honinbo, 48th | Preliminary Round 3 | | 67 | Oyama Kunio | 9p | Ishii Kunio | 9p | W+R | 178 | 1983-03-17 | Tengen, 09th | 1/16 Final - 08 | | 68 | Oyama Kunio | 9p | Iwata Tatsuaki | 9p | B+2.5 | 230 | 1984-03-15 | Tengen, 10th | 1 | | 69 | Kato Masao | 9p | Oyama Kunio | 9p | B+R | 197 | 1983-10-13 | Gosei, 09th | 1 | | 70 | Kato Masao | 9p | Oyama Kunio | 9p | B+R | 163 | 1984-05-31 | Tengen, 10th | Round 2 | | 71 | Oyama Kunio | 9p | Kobayashi Koichi | 9p | W+R | 150 | 1990-06-28 | Judan, 29th | Losers' Section, 1-3 | | 72 | Kobayashi Koichi | 9p | Oyama Kunio | 9p | B+R | 161 | 1995-06-22 | Tengen, 21st | 1/8 Final - 4 | | 73 | Oyama Kunio | 9p | Kori Toshio | 7p | W+1.5 | 272 | 1987-12-03 | Gosei, 13th | Round 2-7 | | 74 | Oyama Kunio | 9p | Nakamura Hidehito | 9p | B+2.5 | 257 | 1991-04-08 | Ryusei Cup, 01st | Block C, Game 19 | | 75 | Nakano Hironari | 8p | Oyama Kunio | 9p | B+R | 161 | 1997-04-17 | Tengen, 23rd | 1-16 | | 76 | Nakano Yasuhiro | 9p | Oyama Kunio | 9p | B+7.5 | 275 | 2009-06-24 | | | | 77 | Oyama Kunio | 9p | O Rissei | 9p | W+R | 234 | 1991-05-23 | Tengen, 17th | 1/8 Final - 5 | | 78 | Oyama Kunio | 8p | O Rissei | 9p | W+1 | 256 | 1998-09-17 | Oza, 46th | Final | | 79 | Okumura Hideo | 7p | Oyama Kunio | 9p | B+2.5 | 248 | 1986-02-20 | Tengen, 11th | 1-03 | | 80 | Oya Koichi | 9p | Oyama Kunio | 9p | B+1 | 239 | 1998-08-20 | Oza, 46th | Semifinal - 2 | | 81 | Oyama Kunio | 9p | Rin Kaiho | 9p | W+R | 202 | 1989-08-17 | Honinbo, 45th | Qualifications, Group 4, Final | | 82 | Oyama Kunio | 9p | Rin Kaiho | 9p | W+R | 124 | 1998-02-26 | Tengen, 24th | 1-10 | | 83 | Oyama Kunio | 9p | Ryu Shikun | 7p | B+4 | 222 | 1998-07-09 | Oza, 46th | Quaterfinal - 3 | | 84 | Oyama Kunio | 9p | Sakai Takeshi | 7p | W+R | 170 | 1978-02-02 | Tengen, 04th | 1-03 | | 85 | Oyama Kunio | 9p | Sakata Eio | 9p | W+R | 228 | 1990-05-17 | Judan, 29th | 1-04 | | 86 | Sanno Hirotaka | 9p | Oyama Kunio | 9p | B+R | 197 | 1991-05-13 | Ryusei Cup, 01st | Block C, Game 21 | | 87 | Oyama Kunio | 8p | Shimamura Toshihiro | 9p | W+4.5 | 257 | 1973-01-01 | Oza, 21st | Semifinal | | 88 | Sonoda Yasutaka | 8p | Oyama Kunio | 9p | W+R | 106 | 1991-02-07 | Tengen, 17th | 1-03 | | 89 | Oyama Kunio | 9p | Sonoda Yuichi | 9p | W+5.5 | 225 | 2010-03-10 | | | | 90 | Takabayashi Takuji | 5p | Oyama Kunio | 9p | W+R | 146 | 1990-03-01 | Tengen, 16th | 1-11 | | 91 | Oyama Kunio | 9p | Takemiya Masaki | 9p | W+0.5 | 195 | 1977-03-17 | Tengen, 03rd | 1-09 | | 92 | Takemiya Masaki | 9p | Oyama Kunio | 9p | B+R | 89 | 1995-01-01 | NHK Cup, 43rd | 1-12 | | 93 | Ushinohama Satsuo | 9p | Oyama Kunio | 9p | B+R | 167 | 1982-09-16 | Kansai Ki-in First Place Championship, 26th | Final, game 1 | | 94 | Oyama Kunio | 9p | Ushinohama Satsuo | 9p | B+0.5 | 237 | 1982-09-16 | j, 26th | Final, game 2 | | 95 | Oyama Kunio | 9p | Ushinohama Satsuo | 9p | B+R | 229 | 1982-10-28 | j, 26th | Final, game 3 | | 96 | Oyama Kunio | 9p | Yamashiro Hiroshi | 9p | W+3 | 224 | 1990-04-12 | Tengen, 16th | 1/8 Final - 5 | | 97 | Yamashiro Hiroshi | 9p | Oyama Kunio | 9p | W+0.5 | 254 | 1998-05-28 | Oza, 46th | 1-07 | | 98 | Oyama Kunio | 9p | Yamashiro Hiroshi | 9p | W+R | 162 | 2006-03-02 | Tengen, 32nd | 1 | | 99 | Yuki Satoshi | 9p | Oyama Kunio | 9p | B+R | 147 | 2010-02-25 | | | | 100 | Zheng Minghuang | 9p | Oyama Kunio | 9p | W+R | 180 | 1995-03-30 | Tengen, 21st | 1-14 |
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