# |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
1 | Hane Yasumasa | 9p | Kobayashi Koichi | 9p | W+R | 144 | 1997-01-08 | Ryusei Cup, 06th | Semifinal - 1 | 2 | Kobayashi Koichi | 9p | Hane Yasumasa | 9p | B+R | 227 | 1997-07-12 | Tokyo Cup, 28th | 2-2 | 3 | Kobayashi Koichi | 9p | Hara Sachiko | 4p | B+R | 145 | 2009-08-20 | | | 4 | Haruyama Isamu | 7p | Kobayashi Koichi | 7p | W+4.5 | 237 | 1976-02-05 | Prime Minister's Cup | Preliminaries | 5 | Haruyama Isamu | 9p | Kobayashi Koichi | 9p | W+3.5 | 258 | 1986-11-20 | Gosei, 12th | 1-04 | 6 | Hasegawa Sunao | 9p | Kobayashi Koichi | 9p | B+R | 229 | 1988-12-01 | Judan, 27th | Losers' Section, 2-4 | 7 | Kobayashi Koichi | 9p | Hasegawa Sunao | 9p | B+R | 101 | 1989-10-26 | Judan, 28th | Losers' Section, 2-3 | 8 | Kobayashi Koichi | 9p | Hasegawa Sunao | 9p | B+R | 107 | 1998-04-25 | Tengen, 24th | 1/8 Final - 1 | 9 | Kobayashi Koichi | 6p | Hashimoto Shoji | 9p | B+R | 185 | 1973-09-07 | NHK Cup, 21st | 1 | 10 | Kobayashi Koichi | 7p | Hashimoto Shoji | 9p | B+1.5 | 260 | 1975-02-06 | Pro Best Ten, 12th | 3-2 | 11 | Hashimoto Shoji | 9p | Kobayashi Koichi | 9p | B+R | 179 | 1979-11-13 | Judan, 19th | Winners' Section, Final | 12 | Hashimoto Shoji | 9p | Kobayashi Koichi | 9p | B+R | 181 | 1980-09-11 | Honinbo, 36th | Preliminary, Stage 3 | 13 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | W+R | 196 | 1981-02-12 | Judan, 20th | Challengers' Final | 14 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | B+2.5 | 265 | 1982-03-04 | Honinbo, 37th | League, game 17 | 15 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | B+9 | 294 | 1982-10-07 | Honinbo, 38th | League, game 01 | 16 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | B+R | 111 | 1983-11-10 | Judan, 22nd | Losers' Section, 3-2 | 17 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | B+R | 217 | 1984-07-19 | Meijin, 09th | League, game 30 | 18 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | B+R | 233 | 1991-01-31 | Gosei, 16th | 1/8 Final - 8 | 19 | Hashimoto Shoji | 9p | Kobayashi Koichi | 9p | W+5.5 | 275 | 1994-06-09 | Tengen, 20th | 1/8 Final - 3 | 20 | Kobayashi Koichi | 9p | Hashimoto Shoji | 9p | W+2.5 | 258 | 1995-01-01 | NHK Cup, 42nd | | 21 | Hashimoto Utaro | 9p | Kobayashi Koichi | 6p | B+R | 161 | 1974-02-05 | Pro Best Ten, 11th | 1/8 Final - 8 | 22 | Hashimoto Utaro | 9p | Kobayashi Koichi | 8p | W+0.5 | 263 | 1977-10-13 | Kisei, 02nd | 1 | 23 | Kobayashi Koichi | 8p | Hashimoto Utaro | 9p | B+R | 177 | 1978-04-20 | Gosei, 03rd | League, game 01 | 24 | Hashimoto Utaro | 9p | Kobayashi Koichi | 9p | W+R | 160 | 1979-08-30 | Oza, 27th | Semifinal - 1 | 25 | Kobayashi Koichi | 9p | Hashimoto Utaro | 9p | W+2 | 272 | 1980-04-10 | Meijin, 05th | League, game 18 | 26 | Kobayashi Koichi | 9p | Hashimoto Utaro | 9p | B+7 | 269 | 1982-11-02 | Honinbo, 37th | League, game 15 | 27 | Hashimoto Yoshimi | 9p | Kobayashi Koichi | 5p | W+R | 172 | 1971-05-27 | Meijin Old, 11th | Preliminaries, stage 3 | 28 | Kobayashi Koichi | 9p | Hashimoto Yujiro | 7p | B+R | 183 | 1995-08-24 | Kisei, 20th | 1-02 | 29 | Kobayashi Koichi | 9p | Hashimoto Yujiro | 8p | B+R | 195 | 1996-11-21 | Gosei, 22nd | 1/16 Final - 04 | 30 | Kobayashi Koichi | 9p | Hashimoto Yujiro | 9p | B+6.5 | 207 | 2006-10-19 | Tengen, 33rd | Preliminaries | 31 | Kobayashi Koichi | 9p | Hashimoto Yujiro | 9p | B+5.5 | 295 | 2015-09-24 | Tengen, 42nd, preliminary tournament A | | 32 | Kobayashi Koichi | 9p | Hikosaka Naoto | 6p | W+1 | 248 | 1983-09-01 | Tengen, 09th | Quaterfinal - 1 | 33 | Hikosaka Naoto | 7p | Kobayashi Koichi | 9p | W+R | 206 | 1989-03-09 | Tengen, 15th | 1-09 | 34 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | B+4,5 | 253 | 1994-09-01 | Kisei, 19th | Main Knockout, 2-2 | 35 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | B+0.5 | 281 | 1996-06-13 | Oza, 44th | Quaterfinal - 1 | 36 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | B+R | 135 | 1998-02-26 | Gosei, 23rd | 1/8 Final - 2 | 37 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+3 | 250 | 1998-08-06 | Judan, 36th | Losers' Section, 2-1 | 38 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+0.5 | 248 | 1999-03-04 | Judan, 37th | Title match, game 1 | 39 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | B+2.5 | 226 | 1999-03-25 | Judan, 37th | Title match, game 2 | 40 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+R | 172 | 1999-04-08 | Judan, 37th | Title match, game 3 | 41 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+R | 176 | 1999-05-27 | Gosei, 24th | Final | 42 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | W+6 | 290 | 1999-09-23 | Kisei, 24th | Semifinal - 1 | 43 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | W+4.5 | 241 | 2002-06-13 | Judan, 41st | 1-05 | 44 | Kobayashi Koichi | 9p | Hikosaka Naoto | 9p | W+2.5 | 264 | 2004-02-05 | Tengen, 30th | 1/16 Final - 13 | 45 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+1.5 | 276 | 2005-06-07 | Ryusei Cup, 14th | 1/8 Final - 8 | 46 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+7.5 | 223 | 2006-02-16 | Judan, 45th | Last primary tournament | 47 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+3.5 | 263 | 2008-09-08 | NHK Cup, 56th | 2 | 48 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+3.5 | 255 | 2015-03-05 | Ryusei, 24th | block-B | 49 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+1.5 | 280 | 2015-03-26 | Igo Masters Cup, 5th | 1st round | 50 | Hisajima Kunio | 5p | Kobayashi Koichi | 6p | W+R | 140 | 1974-07-18 | Prime Minister's Cup, 18th | Quaterfinal - 1 | 51 | Homma Akio | 5p | Kobayashi Koichi | 6p | W+R | 156 | 1972-06-22 | Oteai, 1972 | | 52 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+R | 119 | 1980-01-22 | Judan, 19th | Losers' Section, Final | 53 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | W+3 | 246 | 1982-06-21 | Meijin, 07th | League, game 26 | 54 | Honda Kunihisa | 9p | Kobayashi Koichi | 9p | W+R | 198 | 1982-08-26 | Judan, 21st | Winners' Section, Quaterfinal - 3 | 55 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+0.5 | 252 | 1987-02-12 | Gosei, 12th | 2-3 | 56 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+R | 159 | 1988-07-21 | Tengen, 14th | 2-5 | 57 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+0.5 | 238 | 1992-08-06 | Tengen, 18th | 1/8 Final - 8 | 58 | Honda Kunihisa | 9p | Kobayashi Koichi | 9p | B+R | 201 | 1992-08-20 | Judan, 31st | Losers' Section, 1-3 | 59 | Honda Kunihisa | 9p | Kobayashi Koichi | 9p | B+1 | 285 | 1997-02-13 | Gosei, 22nd | 1/8 Final - 7 | 60 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+R | 165 | 1997-03-09 | NHK Cup, 44th | Semifinal - 2 | 61 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+R | 161 | 2001-01-25 | Tengen, 27th | 1-07 | 62 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | B+R | 209 | 2010-12-16 | Kisei, 36th, last preliminary tournament | | 63 | Kobayashi Koichi | 9p | Honda Kunihisa | 9p | W+3.5 | 285 | 2011-03-03 | Ryusei, 20th | block-E | 64 | Kobayashi Koichi | 9p | Hu Yaoyu | 7p | W+3.5 | 260 | 2002-11-26 | Nongshim Cup, 04th | game 08 | 65 | Kobayashi Koichi | 7p | Hua Yigang | 5p ? | B+R | 167 | 1976-04-05 | China-Japan Go Exchange, 1976 | 1 | 66 | Iguchi Toyohide | 7p | Kobayashi Koichi | 9p | W+R | 168 | 2006-05-04 | Meijin, 32nd | Preliminaries | 67 | Kobayashi Koichi | 9p | Imamura Toshiya | 7p | W+3.5 | 271 | 1987-07-16 | Judan, 26th | Losers' Section, 1-1 | 68 | Imamura Toshiya | | Kobayashi Koichi | | B+R | 157 | 1989-06-08 | Tengen, 15th | 2 | 69 | Imamura Toshiya | 8p | Kobayashi Koichi | 9p | B+4,5 | 277 | 1989-07-07 | Gosei, 14th | Title match, game 1 | 70 | Kobayashi Koichi | 9p | Imamura Toshiya | 8p | B+R | 141 | 1989-07-11 | Gosei, 14th | Title match, game 4 | 71 | Kobayashi Koichi | 9p | Imamura Toshiya | 8p | B+R | 205 | 1989-07-18 | Gosei, 14th | Title match, game 2 | 72 | Imamura Toshiya | 8p | Kobayashi Koichi | 9p | W+3.5 | 282 | 1989-07-28 | Gosei, 14th | Title match, game 3 | 73 | Imamura Toshiya | 8p | Kobayashi Koichi | 9p | W+6 | 255 | 1989-11-23 | Judan, 28th | Losers' Section, 3-2 | 74 | Imamura Toshiya | 9p | Kobayashi Koichi | 9p | W+2.5 | 241 | 1990-06-14 | Tengen, 16th | Quaterfinal - 3 | 75 | Kobayashi Koichi | 9p | Imamura Toshiya | 9p | B+R | 191 | 1992-01-08 | Honinbo, 47th | League, game 13 | 76 | Kobayashi Koichi | 9p | Imamura Toshiya | 9p | B+R | 169 | 1999-09-02 | Haya Go Open | 2-4 | 77 | Imamura Toshiya | 9p | Kobayashi Koichi | 9p | B+0.5 | 276 | 2000-01-24 | NHK Cup, 47th | 4-3 | 78 | Imamura Toshiya | 9p | Kobayashi Koichi | 9p | W+R | 306 | 2004-02-05 | Meijin, 29th | League, game 11 | 79 | Kobayashi Koichi | 9p | Imamura Yoshiaki | 9p | W+1.5 | 276 | 2000-06-22 | Meijin, 25th | League, game 29 | 80 | Imamura Yoshiaki | 8p | Kobayashi Koichi | 9p | B+0.5 | 275 | 2003-08-07 | Kisei, 28th | League, Group A, game 08 | 81 | Kobayashi Koichi | 7p | Inoue Kunio | 5p | B+R | 143 | 1976-03-09 | Prime Minister's Cup | Preliminaries | 82 | Ishida Akira | 7p | Kobayashi Koichi | 7p | W+R | 134 | 1976-09-30 | Prime Minister's Cup, 20th | Final, game 1 | 83 | Kobayashi Koichi | 7p | Ishida Akira | 7p | B+R | 205 | 1976-10-14 | Prime Minister's Cup, 20th | Final, game 2 | 84 | Ishida Akira | 7p | Kobayashi Koichi | 8p | W+R | 222 | 1979-04-19 | Oteai, 1979 | | 85 | Kobayashi Koichi | 9p | Ishida Akira | 8p | B+R | 149 | 1981-07-23 | Kisei, 06th | Strongest Player Quarterfinal | 86 | Ishida Akira | 9p | Kobayashi Koichi | 9p | B+R | 169 | 1982-06-24 | Kisei, 07th | Strongest Player Quarterfinal | 87 | Kobayashi Koichi | 9p | Ishida Akira | 9p | B+R | 169 | 1983-06-02 | Meijin, 08th | League, game 25 | 88 | Ishida Akira | 9p | Kobayashi Koichi | 9p | B+R | 191 | 1984-06-14 | Meijin, 09th | League, game 25 | 89 | Kobayashi Koichi | 9p | Ishida Akira | 9p | B+R | 139 | 1985-02-21 | Meijin, 10th | League, game 11 | 90 | Ishida Akira | 9p | Kobayashi Koichi | 9p | W+R | 120 | 1987-06-04 | Meijin, 12th | League, game 25 | 91 | Ishida Akira | 9p | Kobayashi Koichi | 9p | W+R | 214 | 1988-03-24 | Meijin, 13th | League, game 16 | 92 | Ishida Akira | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1988-06-01 | Gosei, 13th | Challengers' Final | 93 | Kobayashi Koichi | 9p | Ishida Akira | 9p | B+0.5 | 221 | 2003-03-03 | Ryusei Cup, 12th | Block F, Game 11 | 94 | Kobayashi Koichi | 8p | Ishida Yoshio | 9p | W+R | 142 | 1978-04-13 | Honinbo, 33rd | League, game 25 | 95 | Ishida Yoshio | 9p | Kobayashi Koichi | 8p | B+R | 131 | 1978-05-04 | Gosei, 03rd | League | 96 | Kobayashi Koichi | 8p | Ishida Yoshio | 9p | W+R | 238 | 1979-03-22 | Honinbo, 34th | League, game 16 | 97 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | B+R | 243 | 1979-08-28 | Oza, 28th | Semifinal - 1 | 98 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1980-02-21 | Honinbo, 35th | League, game 12 | 99 | Kobayashi Koichi | 9p | Ishida Yoshio | 9p | W+R | 157 | 1983-02-27 | Haya-go Senshuken, 15th | Final, game 1 | 100 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | B+0.5 | 242 | 1983-03-13 | Haya-go Senshuken, 15th | Final, game 2 |
|