# |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
1 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+4.5 | 227 | 1982-06-17 | Honinbo, 37th | Title match, game 3 | 2 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+4,5 | 212 | 1982-07-09 | Honinbo, 37th | Title match, game 5 | 3 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 152 | 1982-07-22 | Honinbo, 37th | Title match, game 6 | 4 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 153 | 1984-01-16 | Judan, 22nd | Losers' Section, Final | 5 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 245 | 1984-04-12 | Honinbo, 39th | League, game 28 | 6 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 233 | 1984-10-18 | Kakusei, 07th | Final League - 2 | 7 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+0.5 | 260 | 1985-03-09 | NEC Cup, 04th | Final | 8 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+5.5 | 281 | 1985-09-12 | Meijin, 10th | Title match, game 1 | 9 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 229 | 1985-09-26 | Meijin, 10th | Title match, game 2 | 10 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 147 | 1985-10-03 | Meijin, 10th | Title match, game 3 | 11 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1985-10-17 | Meijin, 10th | Title match, game 4 | 12 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 242 | 1985-10-20 | Tengen, 11th | Challengers' Final | 13 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+2.5 | 189 | 1985-10-24 | Meijin, 10th | Title match, game 5 | 14 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+2.5 | 197 | 1985-11-07 | Meijin, 10th | Title match, game 6 | 15 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 111 | 1985-11-21 | Meijin, 10th | Title match, game 7 | 16 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+2.5 | 216 | 1986-01-17 | Kisei, 10th | Title match, game 1 | 17 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 238 | 1986-01-30 | Kisei, 10th | Title match, game 2 | 18 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+2.5 | 281 | 1986-02-02 | Hayago, 18th, final | game 01 | 19 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+1.5 | 251 | 1986-02-06 | Kisei, 10th | Title match, game 3 | 20 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+2.5 | 265 | 1986-02-20 | Kisei, 10th | Title match, game 4 | 21 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+0.5 | 196 | 1986-02-23 | Honinbo, 41st | League, game 18 | 22 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1986-02-27 | Kisei, 10th | Title match, game 5 | 23 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 241 | 1986-03-13 | Kisei, 10th | Title match, game 6 | 24 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 258 | 1986-03-16 | Hayago, 18th, final | game 02 | 25 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 194 | 1986-03-30 | Hayago, 18th, finall | game 03 | 26 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 188 | 1987-03-08 | Haya-go Senshuken, 19th | Final | 27 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 174 | 1987-03-19 | Honinbo, 42nd | League, game 24 | 28 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 175 | 1987-08-20 | Meijin, 12th | League, game 34 | 29 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+7.5 | 230 | 1987-11-12 | Honinbo, 43rd | League, game 05 | 30 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+2.5 | 232 | 1987-11-19 | Tengen, 13th | Title match, game 1 | 31 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+1.5 | 246 | 1987-11-27 | Tengen, 13th | Title match, game 2 | 32 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 127 | 1987-12-14 | Tengen, 13th | Title match, game 3 | 33 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 162 | 1987-12-23 | Tengen, 13th | Title match, game 4 | 34 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+0.5 | 230 | 1987-12-28 | Tengen, 13th | Title match, game 5 | 35 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 87 | 1988-01-21 | Meijin, 13th | League | 36 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 158 | 1989-03-30 | Honinbo, 44th | League, game 24 | 37 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 160 | 1990-05-12 | Honinbo, 45th | Title match, game 1 | 38 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+2.5 | 242 | 1990-05-24 | Judan, 29th | 1-05 | 39 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 176 | 1990-05-29 | Honinbo, 45th | Title match, game 2 | 40 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+0.5 | 210 | 1990-06-08 | Honinbo, 45th | Title match, game 3 | 41 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 98 | 1990-06-20 | Honinbo, 45th | Title match, game 4 | 42 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+7.5 | 269 | 1990-07-10 | Honinbo, 45th | Title match, game 5 | 43 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+6.5 | 221 | 1990-07-19 | Honinbo, 45th | Title match, game 6 | 44 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 230 | 1990-07-26 | Honinbo, 45th | Title match, game 7 | 45 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 148 | 1991-05-11 | Honinbo, 46th | Title match, game 1 | 46 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+4,5 | 212 | 1991-05-28 | Honinbo, 46th | Title match, game 2 | 47 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+10.5 | 234 | 1991-06-08 | Honinbo, 46th | Title match, game 3 | 48 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+1 | 310 | 1991-06-22 | Haya-go Senshuken, 24th | 1 | 49 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+5.5 | 292 | 1991-06-28 | Honinbo, 46th | Title match, game 4 | 50 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 237 | 1991-07-04 | Honinbo, 46th | Title match, game 5 | 51 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 212 | 1991-07-17 | Honinbo, 46th | Title match, game 6 | 52 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 218 | 1992-01-23 | Judan, 30th | Losers' Section, Final | 53 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 179 | 1992-05-16 | Honinbo, 47th | Title match, game 1 | 54 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 158 | 1992-05-28 | Honinbo, 47th | Title match, game 2 | 55 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 145 | 1992-06-10 | Honinbo, 47th | Title match, game 3 | 56 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+9 | 271 | 1992-06-18 | Honinbo, 47th | Title match, game 4 | 57 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 132 | 1992-06-26 | Honinbo, 47th | Title match, game 5 | 58 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 189 | 1992-07-09 | Honinbo, 47th | Title match, game 6 | 59 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+7.5 | 217 | 1992-07-23 | Honinbo, 47th | Title match, game 7 | 60 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 169 | 1994-01-12 | Kisei, 18th | Title match, game 1 | 61 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+6.5 | 241 | 1994-01-26 | Kisei, 18th | Title match, game 2 | 62 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 211 | 1994-02-02 | Kisei, 18th | Title match, game 3 | 63 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 167 | 1994-02-16 | Kisei, 18th | Title match, game 4 | 64 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 234 | 1994-02-23 | Kisei, 18th | Title match, game 5 | 65 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+9.5 | 251 | 1994-03-10 | Kisei, 18th | Title match, game 6 | 66 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+2.5 | 281 | 1994-03-31 | Kakusei, 16th | Final | 67 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1995-03-04 | NEC Cup, 14th | Final | 68 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+11.5 | 273 | 1995-03-13 | Kakusei, 17th | Semifinal - 1 | 69 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 137 | 1995-10-16 | Tengen, 21st | Final | 70 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 135 | 1995-11-13 | Judan, 34th | Losers' Section, 2-4 | 71 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+1.5 | 220 | 1995-12-07 | Meijin, 21st | League, game 02 | 72 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 169 | 1995-12-18 | NHK Cup, 43rd | Round 3 | 73 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+0.5 | 289 | 1996-10-17 | Judan, 35th | Winners' Section, Semifinal - 2 | 74 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+8.5 | 256 | 1996-12-16 | Kakusei, 19th | Semifinal - 1 | 75 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+4.5 | 232 | 1997-04-07 | Ryusei Cup, 06th | Block A, Game 11 | 76 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 197 | 1997-09-11 | Meijin, 22nd | Title match, game 1 | 77 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 277 | 1997-09-25 | Meijin, 22nd | Title match, game 2 | 78 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 149 | 1997-10-02 | Meijin, 22nd | Title match, game 3 | 79 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+R | 155 | 1997-10-16 | Meijin, 22nd | Title match, game 4 | 80 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 250 | 1997-10-23 | Meijin, 22nd | Title match, game 5 | 81 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 232 | 1997-11-06 | Meijin, 22nd | Title match, game 6 | 82 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 135 | 1998-09-17 | Judan, 37th | Winners' Section, Semifinal - 1 | 83 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 208 | 1999-01-28 | Kisei, 23rd | Title match, game 2 | 84 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 186 | 1999-02-04 | Kisei, 23rd | Title match, game 3 | 85 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+1.5 | 287 | 1999-02-18 | Kisei, 23rd | Title match, game 4 | 86 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 102 | 1999-02-25 | Kisei, 23rd | Title match, game 5 | 87 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+5.5 | 272 | 1999-03-11 | Kisei, 23rd | Title match, game 6 | 88 | Cho Chikun | 9p | Kobayashi Koichi | 9p | W+R | 160 | 1999-05-17 | Ryusei Cup, 08th | Block A, Game 23 | 89 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+R | 178 | 2001-03-04 | NHK Cup, 48th | Semifinal - 2 | 90 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+0.5 | 220 | 2001-03-15 | Gosei, 26th | Quaterfinal - 2 | 91 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+6.5 | 262 | 2001-09-08 | Haya-go Senshuken, 34th | Final | 92 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+R | 155 | 2001-10-04 | Judan, 40th | Losers' Section, 3-1 | 93 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+4.5 | 312 | 2002-06-24 | NEC Cup, 22nd | 1 | 94 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 291 | 2003-04-03 | Honinbo, 58th | League, game 27 | 95 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+5.5 | 200 | 2003-07-24 | Agon Cup Japanese, 10th | 1 | 96 | Kobayashi Koichi | 9p | Cho Chikun | 9p | B+3.5 | 252 | 2004-03-21 | NHK Cup, 51st | Final | 97 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+3.5 | 253 | 2010-08-22 | NHK Cup, 58th | 2 | 98 | Cho Chikun | 9p | Kobayashi Koichi | 9p | B+3.5 | 300 | 2010-10-07 | Gosei, 36th, preliminary tournament A | Final | 99 | Kobayashi Koichi | 9p | Cho Chikun | 9p | W+1.5 | 246 | 2011-07-23 | Igo Masters Cup, 1st | Final | 100 | Cho Chikun | 9p | Kobayashi Satoru | 9p | B+R | 151 | 1983-11-17 | Judan, 22nd | Losers' Section, 3-3 |
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