| # |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
| 1 | Cho U | 9p | Ko Iso | 8p | B+R | 157 | 2012-01-23 | Judan, 50th | challengers' playoff | | 2 | Ko Iso | 8p | Cho U | 9p | W+R | 236 | 2012-03-29 | Honinbo, 67th | League | | 3 | Ko Iso | 8p | Cho U | 9p | W+R | 166 | 2012-10-11 | Honinbo, 68th | League | | 4 | Cho U | 9p | Ko Iso | 8p | B+0.5 | 317 | 2014-06-05 | Kisei, 39th | League | | 5 | Cho U | 9p | Ko Iso | 8p | W+R | 120 | 2015-01-15 | Meijin, 40th | League | | 6 | Ko Iso | 8p | Cho U | 9p | W+R | 180 | 2016-02-11 | Meijin, 41st | League | | 7 | Ko Iso | 8p | Cho U | 9p | B+R | 283 | 2016-12-22 | Honinbo, 72nd | League | | 8 | Furuya Yutaka | 8p | Ko Iso | 7p | B+0.5 | 278 | 2011-04-10 | NHK Cup, 59th | 1 | | 9 | Ko Iso | 7p | Goto Shungo | 9p | B+14.5 | 247 | 2008-07-14 | NHK Cup, 56th | 2 | | 10 | Han Zenki | 7p | Ko Iso | 7p | B+R | 217 | 2006-02-09 | Meijin, 31st | League | | 11 | Ko Iso | 7p | Hane Naoki | 9p | B+R | 313 | 2006-11-09 | Meijin, 32nd, last preliminary tournament | Final | | 12 | Ko Iso | 7p | Hane Naoki | 9p | B+1.5 | 278 | 2008-08-14 | Tengen, 34th | Semifinal | | 13 | Hane Naoki | 9p | Ko Iso | 7p | W+R | 108 | 2008-10-17 | World Mind Sports Games, 1st, (Team Men) | Final for 3rd place | | 14 | Ko Iso | 7p | Hane Naoki | 9p | W+R | 218 | 2009-08-22 | Daiwa Cup, 05th | 1 | | 15 | Hane Naoki | NEC Cup | Ko Iso | 7p | B+7.5 | 271 | 2010-02-13 | NEC Cup, 29th | Semifinal - 1 | | 16 | Ko Iso | 8p | Hane Naoki | 9p | W+R | 88 | 2011-11-03 | Honinbo, 67th | League | | 17 | Hane Naoki | 9p | Ko Iso | 8p | B+2.5 | 247 | 2012-09-03 | NHK Cup, 60th | 2 | | 18 | Ko Iso | 8p | Hane Naoki | 9p | W+R | 210 | 2014-05-01 | Meijin, 39th | League | | 19 | Hane Naoki | 9p | Ko Iso | 8p | W+R | 166 | 2014-12-04 | Meijin, 40th | League | | 20 | Hane Naoki | 9p | Ko Iso | 8p | W+R | 162 | 2015-05-18 | Oza, 63rd, last preliminary tournament | Final | | 21 | Ko Iso | 8p | Hane Naoki | 9p | B+R | 107 | 2016-01-07 | Meijin, 41st | League | | 22 | Hane Naoki | 9p | Ko Iso | 8p | B+R | 221 | 2016-03-17 | Kisei, 41st | League B-2 | | 23 | Ko Iso | 8p | Hane Naoki | 9p | W+R | 142 | 2016-09-02 | Judan, 55th, last preliminary tournament | Final | | 24 | Hikosaka Naoto | 9p | Ko Iso | 7p | W+1.5 | 240 | 2007-06-07 | Meijin, 32nd | League, game 27 | | 25 | Hikosaka Naoto | 9p | Ko Iso | 7p | W+R | 210 | 2008-06-28 | NEC Cup, 28th | Round 1 | | 26 | Ko Iso | 8p | Hirata Tomoya | 7p | B+R | 163 | 2015-12-03 | Meijin, 41st | League | | 27 | Ko Iso | 7p | Hong Seongji | 7p | B+1.5 | 273 | 2008-11-17 | Asian New Star Match, 09th | Team Korea vs Team Japan | | 28 | Ko Iso | 8p | Ichiriki Ryo | 3p | B+3.5 | 276 | 2013-11-07 | Meijin, 39th | Preliminary, round 3 | | 29 | Ida Atsushi | 8p | Ko Iso | 8p | B+9.5 | 226 | 2014-12-22 | NHK Cup, 62nd | Quarterfinal | | 30 | Ko Iso | 8p | Ida Atsushi | 8p | B+R | 147 | 2016-06-30 | Honinbo, 72nd, last preilminary tournament | | | 31 | Ko Iso | 7p | Imamura Toshiya | 9p | B+3.5 | 214 | 2006-01-12 | Meijin, 31st | League | | 32 | Imamura Toshiya | 9p | Ko Iso | 8p | W+11.5 | 266 | 2011-07-07 | Honinbo, 67th, last preliminary tournament | Final | | 33 | Imamura Toshiya | 9p | Ko Iso | 8p | W+4.5 | 210 | 2012-12-06 | Honinbo, 68th | League | | 34 | Ishida Yoshio | 9p | Ko Iso | 8p | W+7.5 | 256 | 2014-01-16 | Tengen, 40th, preliminary tournament A | Final | | 35 | Ko Iso | 4p | Iyama Yuta | 4p | W+R | 214 | 2005-07-19 | Japanese Nakano Cup (U20), 2nd | Final | | 36 | Ko Iso | 4p | Iyama Yuta | 4p | W+3.5 | 237 | 2005-07-21 | Paewang, 30th | Semifinal | | 37 | Ko Iso | 7p | Iyama Yuta | 7p | B+2.5 | 254 | 2006-08-24 | Meijin, 32nd | Last primary tournament | | 38 | Iyama Yuta | 7p | Ko Iso | 7p | B+2.5 | 206 | 2007-02-22 | Oza, 55th | Last primary tournament, Final | | 39 | Iyama Yuta | 7p | Ko Iso | 7p | B+R | 157 | 2008-05-01 | Meijin, 33rd | League | | 40 | Ko Iso | 7p | Iyama Yuta | 7p | W+R | 210 | 2008-05-29 | Oza, 56th | 1 | | 41 | Ko Iso | 7p | Iyama Yuta | 9p | W+R | 122 | 2010-08-12 | Judan, 49th | Winners' Section, Semifinal | | 42 | Iyama Yuta | 9p | Ko Iso | 8p | B+R | 133 | 2011-12-08 | Honinbo, 67th | League | | 43 | Ko Iso | 8p | Iyama Yuta | Ryusei | W+2.5 | 289 | 2012-07-02 | Ryusei, 21st, champion decision tournament | | | 44 | Iyama Yuta | 9p | Ko Iso | 8p | B+R | 121 | 2015-06-22 | Tengen, 41st | 3rd round | | 45 | Kanazawa Hideo | 7p | Ko Iso | 7p | W+R | 178 | 2009-09-17 | Gosei, 35th, preliminary tournament A | Final | | 46 | Ko Iso | 8p | Kanazawa Makoto | 7p | B+8.5 | 256 | 2015-03-19 | Meijin, 40th | League | | 47 | Kang Dongyun | 5p | Ko Iso | 7p | B+5.5 | 255 | 2006-11-14 | Asian New Star Match, 07th | 2 | | 48 | Ko Iso | 7p | Kang Dongyun | 5p | W+3.5 | 310 | 2007-11-07 | Asian New Star Match, 08th | Team Korea vs Team Japan | | 49 | Ko Iso | 7p | Kataoka Satoshi | 9p | W+1.5 | 293 | 2007-06-18 | NHK Cup, 55th | 2 | | 50 | Ko Iso | 8p | Kataoka Satoshi | 9p | B+1.5 | 230 | 2016-07-28 | Honinbo, 72nd, last preilminary tournament | | | 51 | Kato Yuki | 4p | Ko Iso | 3p | W+R | 158 | 2005-02-17 | Shinjin-O, 30th | 1 | | 52 | Ko Iso | 7p | Kim Jiseok | 7p | W+R | 224 | 2010-10-04 | Asian New Star Match, 11th | Team Korea vs Team Japan | | 53 | Kim Pyonmin | 7p | Ko Iso | 4p | W+2.5 | 252 | 2005-06-16 | Paewang, 30th | Round 3 | | 54 | Ko Iso | 7p | Kim Shushun | 8p | W+R | 166 | 2007-10-20 | Daiwa Cup, 03rd | Round 2 | | 55 | Kiyonari Tetsuya | 9p | Ko Iso | 8p | B+R | 211 | 2016-08-25 | Kisei, 41st | League B-2 | | 56 | Kobayashi Koichi | 9p | Ko Iso | 7p | W+R | 286 | 2008-01-31 | Tengen, 34th | 1 | | 57 | Ko Iso | 7p | Kobayashi Koichi | 9p | W+R | 244 | 2008-08-30 | Daiwa Cup, 04th | tournament 2nd round | | 58 | Ko Iso | 7p | Kobayashi Koichi | 9p | W+R | 186 | 2009-11-26 | Tengen, 36th, preliminary tournament A | Final | | 59 | Ko Iso | 7p | Kobayashi Satoru | 9p | W+R | 200 | 2006-08-03 | Meijin, 31st | League | | 60 | Ko Iso | 7p | Kobayashi Satoru | 9p | B+R | 135 | 2007-03-22 | Meijin, 32nd | League, game 16 | | 61 | Kobayashi Satoru | 9p | Ko Iso | 7p | B+R | 237 | 2008-04-17 | | | | 62 | Kobayashi Satoru | 9p | Ko Iso | 7p | W+0.5 | 242 | 2008-06-05 | Meijin, 33rd | League | | 63 | Kobayashi Satoru | 9p | Ko Iso | 7p | B+3.5 | 310 | 2011-01-27 | Oza, 59th, last preliminary tournament | | | 64 | Ko Iso | 8p | Kobayashi Satoru | 9p | B+R | 139 | 2012-07-19 | | | | 65 | Kobayashi Satoru | 9p | Ko Iso | 8p | W+0.5 | 253 | 2013-09-19 | Meijin, 39th, last preliminary tournament | | | 66 | Kong Jie | 7p | Ko Iso | 7p | W+R | 242 | 2006-04-28 | LG Cup, 11th | integration primary tournament final | | 67 | Ko Iso | 7p | Kong Jie | 7p | B+R | 193 | 2008-10-17 | World Mind Sports Games, 1st, (Team Men) | | | 68 | Ko Iso | 6p | Kono Rin | 7p | B+R | 201 | 2005-10-27 | Meijin, 31st | Last primary tournament, Final | | 69 | Kono Rin | 9p | Ko Iso | 7p | B+R | 245 | 2008-01-10 | Fujitsu Cup, 21st | Last primary tournament | | 70 | Ko Iso | 8p | Kono Rin | 9p | W+1.5 | 314 | 2012-01-12 | Honinbo, 67th | League | | 71 | Kono Rin | 9p | Ko Iso | 8p | B+R | 221 | 2013-07-11 | | | | 72 | Kono RIn | 9p | Ko Iso | 8p | B+2.5 | 292 | 2013-11-25 | NHK Cup, 61st | 3 | | 73 | Ko Iso | 8p | Kono Rin | 9p | W+R | 180 | 2013-12-19 | Meijin, 39th | League | | 74 | Kono Rin | 9p | Ko Iso | 8p | W+R | 116 | 2015-06-04 | Meijin, 40th | League | | 75 | Kono Rin | 9p | Ko Iso | 8p | B+0.5 | 254 | 2016-06-02 | Meijin, 41st | League | | 76 | Ko Iso | 8p | Kono Rin | 9p | W+R | 254 | 2017-01-22 | | | | 77 | Koyama Kuya | 1p ? | Ko Iso | 8p | W+R | 162 | 2014-09-18 | Meijin, 40th, last preliminary tournament | | | 78 | Ko Iso | 7p | Kubo Katsuaki | 9p | B+R | 177 | 2008-02-21 | Oza, 56th | Last primary tournament, Final | | 79 | Ko Iso | 7p | Kudo Norio | 9p | B+R | 125 | 2007-02-15 | Honinbo, 63rd | Preliminaries | | 80 | Ko Iso | 7p | Kudo Norio | 9p | W+R | 172 | 2009-02-09 | Ryusei, 18th | block-H | | 81 | Ko Iso | 8p | Kudo Norio | 9p | B+R | 259 | 2017-02-09 | | | | 82 | Ko Iso | 7p | Kurahashi Masayuki | 9p | B+R | 131 | 2006-01-19 | Tengen, 32nd | 1 | | 83 | Kurahashi Masayuki | 9p | Ko Iso | 7p | B+R | 257 | 2009-01-22 | Tengen, 35th | 1 | | 84 | Ko Iso | 7p | Kurahashi Masayuki | 9p | B+R | 187 | 2010-05-27 | Judan, 49th | Winners' Section, Round 1 | | 85 | Kurahashi Masayuki | 9p | Ko Iso | 8p | W+0.5 | 271 | 2016-07-14 | Judan, 55th, last preliminary tournament | | | 86 | Ko Iso | 3p | Kuwamoto Shinpei | 5p | W+R | 178 | 2004-09-14 | Ryusei Cup, 14th | Block G, Game 01 | | 87 | Ko Iso | 7p | Lee Changho | 9p | W+R | 162 | 2007-09-04 | Samsung Cup, 12th | 1/16 Final - 06 | | 88 | Ko Iso | 7p | Li Zhe | 6p | W+R | 234 | 2007-12-11 | | | | 89 | Ko Iso | 7p | Li Zhe | 6p | W+R | 192 | 2010-10-03 | Asian New Star Match, 11th | Team China vs Team Japan | | 90 | Ko Iso | 7p | Lin Zhihan | 8p | B+R | 111 | 2007-11-08 | Asian New Star Match, 08th | Team Japan vs Team Taiwan | | 91 | Lin Zhihan | 9p | Ko Iso | 7p | W+R | 228 | 2010-10-05 | Asian New Star Match, 11th | Team Taiwan vs Team Japan | | 92 | Linzi Yuan | 7p | Ko Iso | 8p | | 270 | 2013-12-05 | | | | 93 | Ma Xiaobing | 4p | Ko Iso | 7p | W+R | 166 | 2005-11-08 | Nakano Cup China-Japan Competition, 2nd | Round 1 | | 94 | Ko Iso | 7p | Matsumoto Takehisa | 6p | B+R | 229 | 2006-09-13 | Shinjin-O, 31st | Final, game 1 | | 95 | Matsumoto Takehisa | 6p | Ko Iso | 7p | B+R | 269 | 2006-09-20 | Shinjin-O, 31st | Final, game 2 | | 96 | Ko Iso | 7p | Matsumoto Takehisa | 6p | W+5.5 | 267 | 2006-10-04 | Shinjin-O, 31st | Final, game 3 | | 97 | Ko Iso | 7p | Mimura Tomoyasu | 9p | B+R | 169 | 2006-11-30 | Meijin, 32nd | League, game 01 | | 98 | Ko Iso | 7p | Mimura Tomoyasu | 9p | B+R | 249 | 2007-08-16 | Meijin, 32nd | remaining player decision match | | 99 | Mimura Tomoyasu | 9p | Ko Iso | 7p | W+2.5 | 248 | 2010-06-10 | Agon Cup, 17th | 1 | | 100 | Mitani Tetsuya | 3p | Ko Iso | 7p | W+R | 182 | 2005-12-22 | Shinjin-O, 31st | 1 |
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