| # |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
| 1 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+1 | 310 | 1991-06-22 | Haya-go Senshuken, 24th | 1 | | 2 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+5.5 | 292 | 1991-06-28 | Honinbo, 46th | Title match, game 4 | | 3 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 237 | 1991-07-04 | Honinbo, 46th | Title match, game 5 | | 4 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 212 | 1991-07-17 | Honinbo, 46th | Title match, game 6 | | 5 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 218 | 1992-01-23 | Judan, 30th | Losers' Section, Final | | 6 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 179 | 1992-05-16 | Honinbo, 47th | Title match, game 1 | | 7 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 158 | 1992-05-28 | Honinbo, 47th | Title match, game 2 | | 8 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 145 | 1992-06-10 | Honinbo, 47th | Title match, game 3 | | 9 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+9 | 271 | 1992-06-18 | Honinbo, 47th | Title match, game 4 | | 10 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 132 | 1992-06-26 | Honinbo, 47th | Title match, game 5 | | 11 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 189 | 1992-07-09 | Honinbo, 47th | Title match, game 6 | | 12 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+7.5 | 217 | 1992-07-23 | Honinbo, 47th | Title match, game 7 | | 13 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 169 | 1994-01-12 | Kisei, 18th | Title match, game 1 | | 14 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+6.5 | 241 | 1994-01-26 | Kisei, 18th | Title match, game 2 | | 15 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 211 | 1994-02-02 | Kisei, 18th | Title match, game 3 | | 16 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 167 | 1994-02-16 | Kisei, 18th | Title match, game 4 | | 17 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 234 | 1994-02-23 | Kisei, 18th | Title match, game 5 | | 18 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+9.5 | 251 | 1994-03-10 | Kisei, 18th | Title match, game 6 | | 19 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+2.5 | 281 | 1994-03-31 | Kakusei, 16th | Final | | 20 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1995-03-04 | NEC Cup, 14th | Final | | 21 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+11.5 | 273 | 1995-03-13 | Kakusei, 17th | Semifinal - 1 | | 22 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 137 | 1995-10-16 | Tengen, 21st | Final | | 23 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 135 | 1995-11-13 | Judan, 34th | Losers' Section, 2-4 | | 24 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+1.5 | 220 | 1995-12-07 | Meijin, 21st | League, game 02 | | 25 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 169 | 1995-12-18 | NHK Cup, 43rd | Round 3 | | 26 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+0.5 | 289 | 1996-10-17 | Judan, 35th | Winners' Section, Semifinal - 2 | | 27 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+8.5 | 256 | 1996-12-16 | Kakusei, 19th | Semifinal - 1 | | 28 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+4.5 | 232 | 1997-04-07 | Ryusei Cup, 06th | Block A, Game 11 | | 29 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 197 | 1997-09-11 | Meijin, 22nd | Title match, game 1 | | 30 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 277 | 1997-09-25 | Meijin, 22nd | Title match, game 2 | | 31 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 149 | 1997-10-02 | Meijin, 22nd | Title match, game 3 | | 32 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 155 | 1997-10-16 | Meijin, 22nd | Title match, game 4 | | 33 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 250 | 1997-10-23 | Meijin, 22nd | Title match, game 5 | | 34 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 232 | 1997-11-06 | Meijin, 22nd | Title match, game 6 | | 35 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 135 | 1998-09-17 | Judan, 37th | Winners' Section, Semifinal - 1 | | 36 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 208 | 1999-01-28 | Kisei, 23rd | Title match, game 2 | | 37 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1999-02-04 | Kisei, 23rd | Title match, game 3 | | 38 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+1.5 | 287 | 1999-02-18 | Kisei, 23rd | Title match, game 4 | | 39 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 102 | 1999-02-25 | Kisei, 23rd | Title match, game 5 | | 40 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+5.5 | 272 | 1999-03-11 | Kisei, 23rd | Title match, game 6 | | 41 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 160 | 1999-05-17 | Ryusei Cup, 08th | Block A, Game 23 | | 42 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 178 | 2001-03-04 | NHK Cup, 48th | Semifinal - 2 | | 43 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+0.5 | 220 | 2001-03-15 | Gosei, 26th | Quaterfinal - 2 | | 44 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+6.5 | 262 | 2001-09-08 | Haya-go Senshuken, 34th | Final | | 45 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 155 | 2001-10-04 | Judan, 40th | Losers' Section, 3-1 | | 46 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+4.5 | 312 | 2002-06-24 | NEC Cup, 22nd | 1 | | 47 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 291 | 2003-04-03 | Honinbo, 58th | League, game 27 | | 48 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 200 | 2003-07-24 | Agon Cup Japanese, 10th | 1 | | 49 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+3.5 | 252 | 2004-03-21 | NHK Cup, 51st | Final | | 50 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 253 | 2010-08-22 | NHK Cup, 58th | 2 | | 51 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 300 | 2010-10-07 | Gosei, 36th, preliminary tournament A | Final | | 52 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+1.5 | 246 | 2011-07-23 | Igo Masters Cup, 1st | Final | | 53 | Cho Hunhyun | 1pk | Kobayashi Koichi | 5pk | W+4 | 128 | 1965-11-06 | Preliminary to Oteai | | | 54 | Kobayashi Koichi | 9p | Cho Hunhyun | 9p | B+5.5 | 258 | 1988-04-02 | Fujitsu Cup, 01st | 1 | | 55 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+1 | 343 | 1988-08-23 | Ing Cup, 1st | Quaterfinal - 2 | | 56 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+7.5 | 269 | 1989-04-03 | Fujitsu Cup, 02nd | 2-6 | | 57 | Kobayashi Koichi | 9p | Cho Hunhyun | 9p | B+R | 257 | 1990-08-04 | Fujitsu Cup, 03rd | Playoff 3rd-4th | | 58 | Kobayashi Koichi | 9p | Cho Hunhyun | 9p | W+5 | 265 | 1993-06-05 | Fujitsu Cup, 06th | Quaterfinal - 3 | | 59 | Kobayashi Koichi | 9p | Cho Hunhyun | 9p | B+6 | 274 | 1996-04-08 | Fujitsu Cup, 09th | 2-3 | | 60 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+R | 167 | 2001-06-02 | Fujitsu Cup, 14th | 3-1 | | 61 | Cho Hunhyun | 9p | Kobayashi Koichi | 9p | B+R | 207 | 2002-03-19 | World Oza Toyota & Denso Cup, 1st | 1 | | 62 | Kobayashi Koichi | 9p | Cho Hunhyun | 9p | B+R | 281 | 2005-02-05 | Internet Go Championship, 1st | Semifinal | | 63 | Cho Riyu | 7p | Kobayashi Koichi | 9p | B+0.5 | 237 | 2007-02-15 | Honinbo, 63rd | Preliminaries | | 64 | Kobayashi Koichi | 9p | Cho Sonjin | 8p | B+11.5 | 255 | 1997-04-28 | Ryusei Cup, 06th | Quaterfinal - 2 | | 65 | Cho Sonjin | 9p | Kobayashi Koichi | 9p | W+R | 88 | 1999-09-18 | NEC Cup, 19th | 2-1 | | 66 | Kobayashi Koichi | 9p | Cho Sonjin | 9p | B+3.5 | 278 | 2002-11-14 | Honinbo, 58th | League, game 06 | | 67 | Kobayashi Koichi | 9p | Cho Sonjin | 9p | B+R | 189 | 2003-11-06 | Honinbo, 59th | League, game 05 | | 68 | Cho Sonjin | 9p | Kobayashi Koichi | 9p | B+R | 211 | 2006-11-23 | Fujitsu Cup, 20th, last primary tournament | Japanese preliminary | | 69 | Kobayashi Koichi | 9p | Cho Sonjin | 9p | B+R | 135 | 2008-06-21 | Daiwa Cup, 04th | tournament 1st round | | 70 | Kobayashi Koichi | 9p | Cho U | 7p | B+1.5 | 278 | 2001-05-21 | Ryusei Cup, 10th | Quaterfinal - 1 | | 71 | Cho U | 7p | Kobayashi Koichi | 9p | B+11.5 | 238 | 2003-01-23 | Honinbo, 58th | League, game 15 | | 72 | Cho U | 8p | Kobayashi Koichi | 9p | W+6.5 | 237 | 2003-06-20 | NEC Cup, 23rd | 1 | | 73 | Kobayashi Koichi | 9p | Cho U | 9p | W+4.5 | 239 | 2005-01-29 | NEC Cup, 24th | Semifinal | | 74 | Cho U | 9p | Kobayashi Koichi | 9p | W+2.5 | 332 | 2009-01-21 | Daiwa Cup Grand Champion tournament, 2nd | 1 | | 75 | Kobayashi Koichi | 9p | Cho U | 9p | B+3.5 | 234 | 2014-08-28 | Agon Cup, 21st | 2nd round | | 76 | Ch'oe Ch'eol-han | 4p | Kobayashi Koichi | 9p | B+0.5 | 255 | 2001-10-17 | Nongshim Cup, 03rd | game 03 | | 77 | Kobayashi Koichi | 9p | Choi Myunghun | 5p | B+R | 199 | 1997-01-07 | Tong Yang Securities Cup, 8th | 1-02 | | 78 | Kobayashi Koichi | 9p | D. Lee | 6 dan | B+R | 147 | 1990-04-07 | Fujitsu Cup, 03rd | 1 | | 79 | Kobayashi Koichi | 9p | Endo Takahiro | 9p | B+R | 193 | 1998-01-22 | Tengen, 24th | 1-02 | | 80 | Kobayashi Koichi | 9p | Endo Yoshifumi | 5p | B+R | 91 | 1996-04-04 | Oza, 44th | 1/8 Final - 1 | | 81 | Ezura Yuichi | 4p | Kobayashi Koichi | 5p | W+2 | 255 | 1972-05-31 | Oteai, 1972 | | | 82 | Kobayashi Koichi | 7p | Ezura Yuichi | 5p | B+R | 161 | 1975-11-13 | Prime Minister's Cup | Preliminaries | | 83 | Ezura Yuichi | 6p | Kobayashi Koichi | 8p | W+R | 102 | 1978-11-16 | Oteai, 1978 | | | 84 | Fujii Shuya | 6p | Kobayashi Koichi | 9p | W+4.5 | 292 | 2009-08-06 | Meijin, 35th, last preliminary tournament | | | 85 | Kobayashi Koichi | 7p | Fujisawa Hideyuki | 9p | B+R | 221 | 1976-05-20 | Tengen, 02nd | 1-15 | | 86 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | B+R | 159 | 1977-09-22 | Honinbo, 33rd | Final Preliminary Round | | 87 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 8p | B+2.5 | 265 | 1979-01-01 | JAA Cup, 1st | 4 | | 88 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | B+R | 149 | 1979-05-15 | Oza, 28th | 1/8 Final - 3 | | 89 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | W+R | 194 | 1982-10-28 | Honinbo, 38th | League, game 05 | | 90 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | W+0.5 | 256 | 1987-06-18 | Oza, 35th | 2-1 | | 91 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+0.5 | 259 | 1987-11-12 | Meijin, 12th | League, game 13 | | 92 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | W+5.5 | 266 | 1988-01-01 | Haya-go Senshuken, 21st | 1 | | 93 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+0.5 | 252 | 1988-07-07 | Meijin, 13th | League, game 29 | | 94 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | B+R | 187 | 1990-03-08 | Honinbo, 45th | League, game 22 | | 95 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | W+2.5 | 259 | 1992-10-06 | Oza, 40th | Title match, game 1 | | 96 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | W+R | 136 | 1992-10-19 | Oza, 40th | Title match, game 2 | | 97 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+0.5 | 230 | 1992-10-28 | Oza, 40th | Title match, game 3 | | 98 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | B+5.5 | 238 | 1992-11-25 | Oza, 40th | Title match, game 5 | | 99 | Kobayashi Koichi | 9p | Fujisawa Hideyuki | 9p | B+R | 169 | 1992-11-25 | Oza, 40th | Title match, game 4 | | 100 | Fujisawa Hideyuki | 9p | Kobayashi Koichi | 9p | W+4.5 | 291 | 1997-01-01 | NHK Cup, 45th | 3-5 |
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