# |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
1 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 237 | 1991-07-04 | Honinbo, 46th | Title match, game 5 | 2 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 218 | 1992-01-23 | Judan, 30th | Losers' Section, Final | 3 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 158 | 1992-05-28 | Honinbo, 47th | Title match, game 2 | 4 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+9 | 271 | 1992-06-18 | Honinbo, 47th | Title match, game 4 | 5 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 189 | 1992-07-09 | Honinbo, 47th | Title match, game 6 | 6 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+7.5 | 217 | 1992-07-23 | Honinbo, 47th | Title match, game 7 | 7 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+6.5 | 241 | 1994-01-26 | Kisei, 18th | Title match, game 2 | 8 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 167 | 1994-02-16 | Kisei, 18th | Title match, game 4 | 9 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+9.5 | 251 | 1994-03-10 | Kisei, 18th | Title match, game 6 | 10 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1995-03-04 | NEC Cup, 14th | Final | 11 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+11.5 | 273 | 1995-03-13 | Kakusei, 17th | Semifinal - 1 | 12 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+1.5 | 220 | 1995-12-07 | Meijin, 21st | League, game 02 | 13 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 169 | 1995-12-18 | NHK Cup, 43rd | Round 3 | 14 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+0.5 | 289 | 1996-10-17 | Judan, 35th | Winners' Section, Semifinal - 2 | 15 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+8.5 | 256 | 1996-12-16 | Kakusei, 19th | Semifinal - 1 | 16 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+4.5 | 232 | 1997-04-07 | Ryusei Cup, 06th | Block A, Game 11 | 17 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 277 | 1997-09-25 | Meijin, 22nd | Title match, game 2 | 18 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 155 | 1997-10-16 | Meijin, 22nd | Title match, game 4 | 19 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 232 | 1997-11-06 | Meijin, 22nd | Title match, game 6 | 20 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1999-02-04 | Kisei, 23rd | Title match, game 3 | 21 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 102 | 1999-02-25 | Kisei, 23rd | Title match, game 5 | 22 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 160 | 1999-05-17 | Ryusei Cup, 08th | Block A, Game 23 | 23 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 291 | 2003-04-03 | Honinbo, 58th | League, game 27 | 24 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 200 | 2003-07-24 | Agon Cup Japanese, 10th | 1 | 25 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 300 | 2010-10-07 | Gosei, 36th, preliminary tournament A | Final | 26 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+1 | 343 | 1988-08-23 | Ing Cup, 1st | Quaterfinal - 2 | 27 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+7.5 | 269 | 1989-04-03 | Fujitsu Cup, 02nd | 2-6 | 28 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+R | 167 | 2001-06-02 | Fujitsu Cup, 14th | 3-1 | 29 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+R | 207 | 2002-03-19 | World Oza Toyota & Denso Cup, 1st | 1 | 30 | Cho Sonjin | 9p | Kobayashi Koichi | 9p | W+R | 88 | 1999-09-18 | NEC Cup, 19th | 2-1 | 31 | Cho Sonjin | 9p | Kobayashi Koichi | 9p | B+R | 211 | 2006-11-23 | Fujitsu Cup, 20th, last primary tournament | Japanese preliminary | 32 | Cho U | 9p | Kobayashi Koichi | 9p | W+2.5 | 332 | 2009-01-21 | Daiwa Cup Grand Champion tournament, 2nd | 1 | 33 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | W+R | 194 | 1982-10-28 | Honinbo, 38th | League, game 05 | 34 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+0.5 | 259 | 1987-11-12 | Meijin, 12th | League, game 13 | 35 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+0.5 | 252 | 1988-07-07 | Meijin, 13th | League, game 29 | 36 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | W+2.5 | 259 | 1992-10-06 | Oza, 40th | Title match, game 1 | 37 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+0.5 | 230 | 1992-10-28 | Oza, 40th | Title match, game 3 | 38 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+5.5 | 238 | 1992-11-25 | Oza, 40th | Title match, game 5 | 39 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | W+4.5 | 291 | 1997-01-01 | NHK Cup, 45th | 3-5 | 40 | Fujisawa Hosai | 9p | Kobayashi Koichi | 9p | W+R | 240 | 1980-03-27 | Honinbo, 35th | League, game 19 | 41 | Hane Naoki | 9p | Kobayashi Koichi | 9p | W+R | 190 | 2003-09-09 | Ryusei Cup, 12th | Final | 42 | Hane Naoki | 9p | Kobayashi Koichi | 9p | B+3 | 244 | 2004-10-09 | Agon Cup Japanese, 11th | Final | 43 | Hane Naoki | 9p | Kobayashi Koichi | 9p | B+11.5 | 264 | 2005-04-17 | Pandanet Open Internet World Go Championship, 1st | Final | 44 | Hane Naoki | 9p | Kobayashi Koichi | 9p | W+9.5 | 225 | 2005-12-26 | Ryusei Cup, 15th | Block A, Game 10 | 45 | Hane Yasumasa | 9p | Kobayashi Koichi | 9p | W+R | 128 | 1980-08-14 | Meijin, 05th | League, game 35 | 46 | Hane Yasumasa | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1982-02-25 | Meijin, 07th | League, game 12 | 47 | Hane Yasumasa | 9p | Kobayashi Koichi | 9p | W+R | 220 | 1983-02-17 | Meijin, 08th | 11 | 48 | Hane Yasumasa | 9p | Kobayashi Koichi | 9p | W+R | 144 | 1997-01-08 | Ryusei Cup, 06th | Semifinal - 1 | 49 | Haruyama Isamu | 9p | Kobayashi Koichi | 9p | W+3.5 | 258 | 1986-11-20 | Gosei, 12th | 1-04 | 50 | Hasegawa Sunao | 9p | Kobayashi Koichi | 9p | B+R | 229 | 1988-12-01 | Judan, 27th | Losers' Section, 2-4 | 51 | Hashimoto Shoji | 9p | Kobayashi Koichi | 9p | B+R | 179 | 1979-11-13 | Judan, 19th | Winners' Section, Final | 52 | Hashimoto Shoji | 9p | Kobayashi Koichi | 9p | B+R | 181 | 1980-09-11 | Honinbo, 36th | Preliminary, Stage 3 | 53 | Hashimoto Shoji | 9p | Kobayashi Koichi | 9p | W+5.5 | 275 | 1994-06-09 | Tengen, 20th | 1/8 Final - 3 | 54 | Hashimoto Utaro | 9p | Kobayashi Koichi | 9p | W+R | 160 | 1979-08-30 | Oza, 27th | Semifinal - 1 | 55 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+3 | 250 | 1998-08-06 | Judan, 36th | Losers' Section, 2-1 | 56 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+0.5 | 248 | 1999-03-04 | Judan, 37th | Title match, game 1 | 57 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+R | 172 | 1999-04-08 | Judan, 37th | Title match, game 3 | 58 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+R | 176 | 1999-05-27 | Gosei, 24th | Final | 59 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+1.5 | 276 | 2005-06-07 | Ryusei Cup, 14th | 1/8 Final - 8 | 60 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | W+7.5 | 223 | 2006-02-16 | Judan, 45th | Last primary tournament | 61 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+3.5 | 263 | 2008-09-08 | NHK Cup, 56th | 2 | 62 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+3.5 | 255 | 2015-03-05 | Ryusei, 24th | block-B | 63 | Hikosaka Naoto | 9p | Kobayashi Koichi | 9p | B+1.5 | 280 | 2015-03-26 | Igo Masters Cup, 5th | 1st round | 64 | Honda Kunihisa | 9p | Kobayashi Koichi | 9p | W+R | 198 | 1982-08-26 | Judan, 21st | Winners' Section, Quaterfinal - 3 | 65 | Honda Kunihisa | 9p | Kobayashi Koichi | 9p | B+R | 201 | 1992-08-20 | Judan, 31st | Losers' Section, 1-3 | 66 | Honda Kunihisa | 9p | Kobayashi Koichi | 9p | B+1 | 285 | 1997-02-13 | Gosei, 22nd | 1/8 Final - 7 | 67 | Imamura Toshiya | 9p | Kobayashi Koichi | 9p | W+2.5 | 241 | 1990-06-14 | Tengen, 16th | Quaterfinal - 3 | 68 | Imamura Toshiya | 9p | Kobayashi Koichi | 9p | B+0.5 | 276 | 2000-01-24 | NHK Cup, 47th | 4-3 | 69 | Imamura Toshiya | 9p | Kobayashi Koichi | 9p | W+R | 306 | 2004-02-05 | Meijin, 29th | League, game 11 | 70 | Ishida Akira | 9p | Kobayashi Koichi | 9p | B+R | 169 | 1982-06-24 | Kisei, 07th | Strongest Player Quarterfinal | 71 | Ishida Akira | 9p | Kobayashi Koichi | 9p | B+R | 191 | 1984-06-14 | Meijin, 09th | League, game 25 | 72 | Ishida Akira | 9p | Kobayashi Koichi | 9p | W+R | 120 | 1987-06-04 | Meijin, 12th | League, game 25 | 73 | Ishida Akira | 9p | Kobayashi Koichi | 9p | W+R | 214 | 1988-03-24 | Meijin, 13th | League, game 16 | 74 | Ishida Akira | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1988-06-01 | Gosei, 13th | Challengers' Final | 75 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | B+R | 243 | 1979-08-28 | Oza, 28th | Semifinal - 1 | 76 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1980-02-21 | Honinbo, 35th | League, game 12 | 77 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | B+0.5 | 242 | 1983-03-13 | Haya-go Senshuken, 15th | Final, game 2 | 78 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+3 | 254 | 1984-03-11 | Haya-go Senshuken, 16th | Final, game 2 | 79 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+R | 256 | 1985-11-16 | Tengen, 11th | Title match, game 1 | 80 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+R | 146 | 1985-12-04 | Tengen, 11th | Title match, game 3 | 81 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | B+2.5 | 261 | 1994-06-20 | Ryusei Cup, 04th | Block A, Game 23 | 82 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+R | 188 | 2003-06-12 | Kisei, 28th | League, Group A, game 02 | 83 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | W+4.5 | 277 | 2011-06-25 | Igo Masters Cup, 1st | Semifinal | 84 | Ishida Yoshio | 9p | Kobayashi Koichi | 9p | B+R | 239 | 2012-12-20 | | | 85 | Ishigure Ikuro | 9p | Kobayashi Koichi | 9p | B+R | 149 | 1991-05-16 | Tengen, 17th | 1/8 Final - 4 | 86 | Ishigure Ikuro | 9p | Kobayashi Koichi | 9p | W+R | 156 | 1995-11-16 | Gosei, 21st | 2-1 | 87 | Ishii Kunio | 9p | Kobayashi Koichi | 9p | W+R | 178 | 1979-07-03 | Oza, 28th | Quaterfinal - 1 | 88 | Ishii Kunio | 9p | Kobayashi Koichi | 9p | W+1.5 | 284 | 1979-11-29 | Meijin, 05th | Qualifications - 3 | 89 | Ishii Kunio | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1983-08-11 | Meijin, 08th | 36 | 90 | Ishii Kunio | 9p | Kobayashi Koichi | 9p | W+R | 168 | 1993-04-08 | Oza, 41st | 1/8 Final - 4 | 91 | Ishii Kunio | 9p | Kobayashi Koichi | 9p | B+R | 157 | 1997-12-18 | Oza, 46th | Preliminaries, 3-1 | 92 | Ishii Kunio | 9p | Kobayashi Koichi | 9p | W+R | 184 | 2004-03-29 | Ryusei Cup, 13th | Block G, Game 11 | 93 | Ishii Mamoru | 9p | Kobayashi Koichi | 9p | W+R | 106 | 1996-02-15 | Tengen, 22nd | 1-04 | 94 | Ishikura Noboru | 9p | Kobayashi Koichi | 9p | W+0.5 | 246 | 2007-02-22 | Judan, 46th | Preliminaries | 95 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+6 | 222 | 1981-12-16 | Honinbo, 37th | League, game 04 | 96 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+0.5 | 269 | 1983-01-13 | Judan, 21st | Losers' Section, Semifinal - 1 | 97 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+6 | 255 | 1983-03-24 | Honinbo, 38th | League, game 24 | 98 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+R | 188 | 1984-02-09 | Honinbo, 39th | League, game 18 | 99 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+4.5 | 255 | 1987-05-14 | Oza, 35th | 1-08 | 100 | Iyama Yuta | 9p | Kobayashi Koichi | 9p | B+R | 261 | 2014-09-11 | Agon Cup, 21st | Semifinal |
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