| # |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
| 1 | Ryu Shikun | 9p | Kobayashi Koichi | 9p | W+R | 166 | 2011-06-09 | Kisei, 36th | League | | 2 | Saijo Masataka | 6p | Kobayashi Koichi | 6p | B+3 | 243 | 1973-04-19 | Oteai, 1973 | | | 3 | Kobayashi Koichi | 9p | Sakai Hideyuki | 7p | B+0.5 | 279 | 2005-04-16 | Pandanet Open Internet World Go Championship, 1st | Quaterfinal | | 4 | Sakai Hideyuki | 8p | Kobayashi Koichi | 9p | B+5.5 | 296 | 2011-12-22 | Tengen, 38th | 1 | | 5 | Sakai Josho | 7p | Kobayashi Koichi | 6p | W+1.5 | 255 | 1974-09-12 | Prime Minister's Cup, 18th | Semifinal - 2 | | 6 | Sakai Maki | 6p | Kobayashi Koichi | 9p | B+4,5 | 258 | 1998-12-24 | Meijin, 24th | League, game 04 | | 7 | Kobayashi Koichi | 6p | Sakai Michiharu | 8p | B+11.5 | 237 | 1973-11-01 | Pro Best Ten, 11th | 1-05 | | 8 | Sakai Michiharu | 8p | Kobayashi Koichi | 8p | W+R | 150 | 1978-04-06 | Tengen, 04th | 1-16 | | 9 | Sakai Takeshi | 6p | Kobayashi Koichi | 6p | W+R | 176 | 1973-05-06 | Prime Minister's Cup, 17th | Preliminaries | | 10 | Kobayashi Koichi | 7p | Sakai Takeshi | 7p | W+7.5 | 263 | 1975-08-28 | Oza, 23rd | 2-3 | | 11 | Kobayashi Koichi | 8p | Sakai Takeshi | 8p | B+R | 113 | 1979-01-11 | Honinbo, 34th | League, game 04 | | 12 | Kobayashi Koichi | 9p | Sakai Takeshi | 8p | W+0.5 | 243 | 1979-06-14 | Kisei, 04th | Final 8 dan | | 13 | Kobayashi Koichi | 9p | Sakai Takeshi | 9p | B+R | 85 | 1988-05-19 | Oza, 36th | 1-07 | | 14 | Sakai Takeshi | 9p | Kobayashi Koichi | 9p | W+4 | 244 | 1990-04-19 | Tengen, 16th | 1/8 Final - 2 | | 15 | Sakai Takeshi | 9p | Kobayashi Koichi | 9p | W+R | 144 | 2006-07-13 | Judan, 45th | 1 | | 16 | Sakai Takeshi | 9p | Kobayashi Koichi | 9p | W+R | 176 | 2007-04-19 | Judan, 46th | Last primary tournament, Final | | 17 | Kobayashi Koichi | 9p | Sakai Takeshi | 9p | W+5.5 | 220 | 2010-11-25 | | | | 18 | Kobayashi Koichi | 7p | Sakata Eio | 9p | B+R | 185 | 1974-11-28 | Pro Best Ten, 12th | Round 2 | | 19 | Kobayashi Koichi | 7p | Sakata Eio | 9p | B+R | 97 | 1975-12-01 | | | | 20 | Kobayashi Koichi | 8p | Sakata Eio | 9p | W+R | 182 | 1979-05-03 | Honinbo, 34th | League, game 26 | | 21 | Sakata Eio | 9p | Kobayashi Koichi | 9p | W+1 | 300 | 1979-12-04 | Judan, 19th | Losers' Section, Semifinal | | 22 | Kobayashi Koichi | 9p | Sakata Eio | 9p | W+0.5 | 274 | 1979-12-15 | JAA, 2nd | Round 2 | | 23 | Kobayashi Koichi | 9p | Sakata Eio | 9p | W+7 | 269 | 1980-01-18 | Haya-go Senshuken, 13th | Semifinal | | 24 | Sakata Eio | 9p | Kobayashi Koichi | 9p | B+R | 155 | 1980-01-31 | Honinbo, 35th | League, game 10 | | 25 | Sakata Eio | 9p | Kobayashi Koichi | 9p | W+R | 234 | 1980-05-22 | Meijin, 05th | League, game 24 | | 26 | Kobayashi Koichi | 9p | Sakata Eio | 9p | B+7.5 | 288 | 1980-12-18 | Meijin, 06th | League | | 27 | Sakata Eio | 9p | Kobayashi Koichi | 9p | W+9 | 237 | 1981-12-24 | Honinbo, 37th | League, game 07 | | 28 | Kobayashi Koichi | 9p | Sakata Eio | 9p | W+Time | 156 | 1982-07-15 | Meijin, 07th | League, game 28 | | 29 | Kobayashi Koichi | 9p | Sakata Eio | 9p | B+R | 203 | 1982-07-25 | Judan, 21st | 1/8 Final - 7 | | 30 | Kobayashi Koichi | 9p | Sakata Eio | 9p | B+R | 157 | 1982-12-16 | Honinbo, 38th | League, game 13 | | 31 | Sakata Eio | 9p | Kobayashi Koichi | 9p | B+10 | 275 | 1983-03-10 | Meijin, 08th | League, game 14 | | 32 | Kobayashi Koichi | 9p | Sakata Eio | 9p | W+10.5 | 268 | 1983-11-17 | Honinbo, 39th | League, game 08 | | 33 | Kobayashi Koichi | 9p | Sakata Eio | 9p | B+5.5 | 255 | 1984-02-16 | Judan, 22nd | 1, Challenger final | | 34 | Kobayashi Koichi | 9p | Sakata Eio | 9p | B+4,5 | 227 | 1984-03-22 | Meijin, 09th | League, game 16 | | 35 | Sakata Eio | 9p | Kobayashi Koichi | 9p | W+3.5 | 229 | 1984-07-12 | Kisei, 09th | 9 Dan Section | | 36 | Kobayashi Koichi | 9p | Sakata Eio | 9p | W+1.5 | 191 | 1987-01-22 | Honinbo, 42nd | League, game 14 | | 37 | Kobayashi Koichi | 9p | Sakata Eio | 9p | B+R | 135 | 1987-05-21 | Gosei, 12th | Semifinal - 2 | | 38 | Sakata Eio | 9p | Kobayashi Koichi | 9p | W+6.5 | 217 | 1990-02-10 | Honinbo, 45th | League, game 13 | | 39 | Sakata Eio | 9p | Kobayashi Koichi | 9p | W+1 | 243 | 1990-12-06 | Honinbo, 46th | League, game 09 | | 40 | Kobayashi Koichi | 5p | Sanno Hirotaka | 6p | B+R | 251 | 1971-05-06 | Oteai, 1971 | | | 41 | Kobayashi Koichi | 9p | Sanno Hirotaka | 9p | B+5.5 | 293 | 2007-01-25 | Honinbo, 63rd | Preliminaries | | 42 | Sasaki Tadashi | 5p | Kobayashi Koichi | 9p | B+2.5 | 242 | 1993-04-01 | Tengen, 19th | 1-14 | | 43 | Kobayashi Koichi | 4p | Sato Kaoru | 6p | B+R | 151 | 1970-04-30 | Oteai, 1970 | | | 44 | Sato Masaharu | 7p | Kobayashi Koichi | 8p | B+7 | 239 | 1979-06-21 | Oteai, 1979 | | | 45 | Sato Masaharu | 7p | Kobayashi Koichi | 9p | W+R | 134 | 1981-04-02 | Meijin, 06th | League | | 46 | Kobayashi Koichi | 9p | Sato Masaharu | 9p | W+R | 150 | 2016-04-21 | | | | 47 | Kobayashi Koichi | 7p | Sato Sunao | 9p | B+6 | 229 | 1976-09-16 | Tengen, 02nd | Quaterfinal - 2 | | 48 | Sato Sunao | 9p | Kobayashi Koichi | 9p | B+2 | 241 | 1983-08-04 | Judan, 22nd | Losers' Section, 1-1 | | 49 | Sato Sunao | 9p | Kobayashi Koichi | 9p | W+R | 82 | 1988-04-07 | Honinbo, 43rd | League, game 25 | | 50 | Sekine Naohisa | 5p | Kobayashi Koichi | 7p | W+18 | 196 | 1977-04-21 | Oteai, 1977 | | | 51 | Sekiyama Toshio | 9p | Kobayashi Koichi | 9p | B+R | 207 | 1984-11-29 | Gosei, 10th | | | 52 | Seo Bongsoo | 9p | Kobayashi Koichi | 9p | W+R | 202 | 1991-06-01 | Fujitsu Cup, 04th | Quaterfinal | | 53 | Kobayashi Koichi | 9p | Seo Bongsoo | 9p | B+1 | 252 | 1993-04-05 | Fujitsu Cup, 06th | 1/8 Final - 6 | | 54 | Kobayashi Koichi | 9p | Seo Bongsoo | 9p | B+R | 195 | 1997-04-14 | Fujitsu Cup, 10th | 2-4 | | 55 | Kobayashi Koichi | 5p | Seo Hisashi | 7p | B+R | 239 | 1972-05-18 | Prime Minister's Cup, 16th | Preliminaries | | 56 | Seo Nung-uk | 9p | Kobayashi Koichi | 9p | B+7.5 | 288 | 1996-06-25 | LG Cup, 01st | 1-02 | | 57 | Kobayashi Koichi | 9p | Seto Taiki | 6p | B+0.5 | 231 | 2007-12-06 | Gosei, 33rd | Round 1 | | 58 | Kobayashi Koichi | 9p | Seto Taiki | 7p | W+11.5 | 250 | 2012-06-14 | Agon Cup, 19th, last preliminary tournament | Final | | 59 | Kobayashi Koichi | 9p | Shao Zhengzhong | 8p | B+R | 155 | 1985-05-20 | Japan-China Super Go, 1st | game 08 | | 60 | Kobayashi Koichi | 6p | Shimamura Toshihiro | 9p | B+R | 175 | 1974-04-18 | Nihon Ki-in Championship, 22nd | 1-12 | | 61 | Kobayashi Koichi | 7p | Shimamura Toshihiro | 9p | B+R | 123 | 1976-02-26 | Gosei, 01st | League, game 08 | | 62 | Shimamura Toshihiro | 9p | Kobayashi Koichi | 8p | W+6.5 | 304 | 1978-01-01 | JAA Cup, 1st | 1 | | 63 | Shimamura Toshihiro | 9p | Kobayashi Koichi | 8p | W+R | 168 | 1978-03-23 | Honinbo, 33rd | League, game 23 | | 64 | Kobayashi Koichi | 9p | Shimamura Toshihiro | 9p | B+R | 131 | 1979-07-19 | Oza, 27th | 2-2 | | 65 | Shimamura Toshihiro | 9p | Kobayashi Koichi | 9p | W+6.5 | 251 | 1981-06-18 | Meijin, 06th | League | | 66 | Shimosaka Miori | 1p ? | Kobayashi Koichi | 9p | W+8.5 | 290 | 2011-10-27 | Tengen, 38th, preliminary tournament A | Final | | 67 | Shiraishi Yuichi | 5p | Kobayashi Koichi | 9p | W+R | 182 | 2013-10-24 | | | | 68 | Shiraishi Yutaka | 9p | Kobayashi Koichi | 7p | W+R | 106 | 1976-12-08 | Kisei, 01st | Strongest Player Semifinal | | 69 | Kobayashi Koichi | 8p | Shiraishi Yutaka | 9p | B+R | 149 | 1978-05-18 | Tengen, 04th | 1-20 | | 70 | Kobayashi Koichi | 9p | Shiraishi Yutaka | 9p | B+R | 165 | 1980-05-01 | Honinbo, 35th | League, game 26 | | 71 | Kobayashi Koichi | 9p | Shiraishi Yutaka | 9p | B+R | 187 | 1985-01-31 | Honinbo, 40th | League, game 15 | | 72 | Shiraishi Yutaka | 9p | Kobayashi Koichi | 9p | W+R | 114 | 1987-01-08 | Meijin, 12th | League, game 06 | | 73 | Shiraishi Yutaka | 9p | Kobayashi Koichi | 9p | W+7.5 | 231 | 1988-06-04 | Fujitsu Cup, 01st | Quaterfinal - 2 | | 74 | Kobayashi Koichi | 9p | Shuto Shun | 5p | B+R | 113 | 2007-05-24 | Judan, 46th | 1 | | 75 | Shuto Shun | 6p | Kobayashi Koichi | 9p | W+4.5 | 270 | 2008-11-22 | Daiwa Cup, 04th | tournament semifinal | | 76 | Kobayashi Koichi | 9p | Shuto Shun | 6p | W+R | 150 | 2009-02-14 | Daiwa Cup Grand Champion tournament, 2nd | Semifinal | | 77 | So Kofuku | 7p | Kobayashi Koichi | 9p | W+3.5 | 236 | 1995-09-28 | Kisei, 20th | Quaterfinal - 3 | | 78 | Kobayashi Koichi | 9p | So Kofuku | 9p | B+R | 127 | 2009-10-15 | | | | 79 | So Yokoku | 7p | Kobayashi Koichi | 9p | W+1.5 | 238 | 2004-11-21 | NHK Cup, 51st | Round 2 | | 80 | So Yokoku | 8p | Kobayashi Koichi | 9p | B+R | 175 | 2006-06-29 | Meijin, 32nd | Preliminaries | | 81 | So Yokoku | 8p | Kobayashi Koichi | 9p | B+12.5 | 233 | 2008-09-18 | | | | 82 | Kobayashi Koichi | 9p | Song Taekon | 7p | W+6.5 | 270 | 2004-05-11 | Asian TV Cup, 16th | Quaterfinal - 1 | | 83 | Sonoda Yasutaka | 8p | Kobayashi Koichi | 9p | W+R | 202 | 1994-07-21 | Honinbo, 50th | Qualifications, Group 1, Final | | 84 | Kobayashi Koichi | 9p | Sonoda Yuichi | 9p | B+R | 97 | 1984-10-18 | Kisei, 09th | Quaterfinal | | 85 | Kobayashi Koichi | 9p | Sonoda Yuichi | 9p | W+R | 144 | 1986-11-13 | Tengen, 12th | Title match, game 1 | | 86 | Sonoda Yuichi | 9p | Kobayashi Koichi | 9p | W+3.5 | 232 | 1986-11-28 | Tengen, 12th | Title match, game 2 | | 87 | Kobayashi Koichi | 9p | Sonoda Yuichi | 9p | B+R | 153 | 1986-12-03 | Tengen, 12th | Title match, game 3 | | 88 | Sonoda Yuichi | 9p | Kobayashi Koichi | 9p | W+R | 164 | 1986-12-16 | Tengen, 12th | Title match, game 4 | | 89 | Kobayashi Koichi | 9p | Sonoda Yuichi | 9p | B+R | 195 | 1990-10-11 | Tengen, 16th | Final | | 90 | Sonoda Yuichi | 9p | Kobayashi Koichi | 9p | W+1.5 | 248 | 1995-08-10 | Oza, 43th | Semifinal - 1 | | 91 | Kobayashi Koichi | 9p | Sonoda Yuichi | 9p | B+2 | 226 | 1998-03-26 | Gosei, 23rd | Quaterfinal - 2 | | 92 | Sonoda Yuichi | 9p | Kobayashi Koichi | 9p | B+R | 197 | 2007-09-27 | Meijin, 33rd, last preliminary tournament | Preliminaries | | 93 | Sugiuchi Masao | 9p | Kobayashi Koichi | 7p | B+4,5 | 238 | 1976-11-29 | Tengen, 02nd | Title match, game 1 | | 94 | Kobayashi Koichi | 7p | Sugiuchi Masao | 9p | B+R | 99 | 1976-12-07 | Tengen, 02nd | Title match, game 2 | | 95 | Sugiuchi Masao | 9p | Kobayashi Koichi | 7p | W+0.5 | 267 | 1976-12-16 | Tengen, 02nd | Title match, game 3 | | 96 | Kobayashi Koichi | 7p | Sugiuchi Masao | 9p | B+R | 173 | 1977-01-06 | Tengen, 02nd | Title match, game 4 | | 97 | Kobayashi Koichi | 9p | Sugiuchi Masao | 9p | B+R | 189 | 1983-01-27 | Judan, 21st | Losers' Section, Final | | 98 | Sugiuchi Masao | 9p | Kobayashi Koichi | 9p | B+6 | 274 | 1985-12-25 | Honinbo, 41st | League, game 10 | | 99 | Sugiuchi Masao | 9p | Kobayashi Koichi | 9p | W+R | 126 | 1999-04-12 | Ryusei Cup, 08th | Block A, Game 22 | | 100 | Kobayashi Koichi | 9p | Suzuki Ayumi | 4p | B+3.5 | 247 | 2008-04-21 | NHK Cup, 56th | 1 |
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