| # |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
| 1 | Mizogami Tomochika | 9p | Ko Iso | 8p | W+1.5 | 278 | 2015-06-25 | Oza, 63rd | 1st round | | 2 | Ko Iso | 7p | Mochizuki Ken'ichi | 6p | B+3.5 | 306 | 2007-08-14 | Japanese Daiwa-Shoken Cup, 3rd, Preliminaries | | | 3 | Morita Michihiro | 9p | Ko Iso | 7p | W+R | 212 | 2008-05-08 | Judan, 47th | Last primary tournament, Final | | 4 | Murakawa Daisuke | 4p | Ko Iso | 7p | B+0.5 | 262 | 2007-04-05 | Shinjin-O, 32nd | Round 2 | | 5 | Murakawa Daisuke | 5p | Ko Iso | 7p | B+R | 223 | 2009-10-22 | Gosei, 35th | Round 1 | | 6 | Ko Iso | 8p | Murakawa Daisuke | 7p | B+R | 179 | 2014-03-06 | Meijin, 39th | League | | 7 | Ko Iso | 8p | Murakawa Daisuke | 9p | B+3.5 | 256 | 2015-04-06 | Meijin, 40th | League | | 8 | Murakawa Daisuke | 8p | Ko Iso | 8p | B+R | 185 | 2016-03-10 | Meijin, 41st | League | | 9 | Nakano Hironari | 9p | Ko Iso | 7p | B+R | 177 | 2007-02-03 | Japanese Daiwa-Shoken Cup, 2nd | league C | | 10 | Nakano Hironari | 9p | Ko Iso | 8p | W+R | 130 | 2011-12-01 | | | | 11 | Ko Iso | 8p | Nakano Hironari | 9p | B+R | 181 | 2012-08-30 | Honinbo, 68th, last preliminary tournament | Final | | 12 | Nakaonoda Tomomi | 9p | Ko Iso | 4p | B+R | 229 | 2005-04-28 | Honinbo, 61st | Preliminaries | | 13 | Nakaonoda Tomomi | 9p | Ko Iso | 7p | W+0.5 | 242 | 2006-04-10 | NHK Cup, 54th | 1 | | 14 | O Meien | 9p | Ko Iso | 7p | B+R | 233 | 2007-08-23 | Honinbo, 63rd | Last primary tournament, Final | | 15 | Ko Iso | 7p | O Meien | 9p | W+R | 252 | 2010-02-25 | Kisei, 35th, last preliminary tournament | Final | | 16 | O Rissei | 9p | Ko Iso | 7p | B+R | 193 | 2006-03-09 | Tengen, 32nd | 2 | | 17 | O Rissei | 9p | Ko Iso | 7p | B+R | 155 | 2009-08-13 | Judan, 48th | Winners' Section, Round 2 | | 18 | Ko Iso | 7p | O Rissei | 9p | W+R | 294 | 2009-09-22 | NHK Cup, 57th | 2 | | 19 | Ko Iso | 7p | Ogata Masaki | 9p | B+R | 289 | 2006-12-19 | Japanese Daiwa-Shoken Cup, 2nd | Preliminaries | | 20 | Ko Iso | 8p | Ogata Masaki | 9p | B+R | 129 | 2011-12-22 | Judan, 50th | Semifinal | | 21 | Ogata Masaki | 9p | Ko Iso | 8p | W+R | 198 | 2014-03-31 | NHK Cup, 62nd | 1 | | 22 | Oya Koichi | 9p | Ko Iso | 7p | W+R | 224 | 2009-06-18 | Agon Cup, 16th | 1 | | 23 | Ko Iso | 7p | Paek Hongseok | 6p | W+5.5 | 236 | 2009-04-16 | LG Cup, 14th, integration preliminary tournament | | | 24 | Piao Wenyao | 5p | Ko Iso | 7p | B+R | 149 | 2007-12-11 | | | | 25 | Redmond, Michael | 9p | Ko Iso | 7p | W+13.5 | 230 | 2007-09-24 | Daiwa Cup, 03rd | Round 1 | | 26 | Rin Kaiho | 9p | Ko Iso | 7p | W+0.5 | 273 | 2007-06-14 | Honinbo, 63rd | Last primary tournament | | 27 | Ko Iso | 8p | Rin Kaiho | 9p | B+12.5 | 237 | 2011-09-29 | | | | 28 | Ko Iso | 7p | Rin Kanketsu | 6p | W+2.5 | 252 | 2005-08-01 | Ryusei Cup, 15th | Block C, Game 01 | | 29 | Rin Kanketsu | 7p | Ko Iso | 8p | W+0.5 | 274 | 2015-08-06 | Oza, 63rd | 2nd round | | 30 | Ko Iso | 7p | Rin Shien | 7p | W+R | 168 | 2009-06-11 | Ryusei Cup, 18th, champion decision tournament | | | 31 | Ko Iso | 7p | Ryu Shikun | 9p | B+4,5 | 287 | 2007-01-28 | Japanese Daiwa-Shoken Cup, 2nd | league C | | 32 | Ko Iso | 7p | Ryu Shikun | 9p | W+R | 246 | 2009-07-16 | | | | 33 | Ryu Shikun | 9p | Ko Iso | 7p | W+R | 146 | 2010-05-06 | Agon Cup, 17th, last preliminary tournament | Final | | 34 | Ryu Shikun | 9p | Ko Iso | 7p | W+R | 130 | 2010-12-02 | | | | 35 | Ryu Shikun | 9p | Ko Iso | 8p | B+R | 243 | 2011-10-08 | Daiwa Cup, 07th | 1 | | 36 | Ryu Shikun | 9p | Ko Iso | 8p | B+R | 143 | 2012-10-18 | Judan, 51st | 2 | | 37 | Ko Iso | 8p | Ryu Shikun | 9p | W+R | 232 | 2014-03-27 | Meijin, 39th | League | | 38 | Ko Iso | 8p | Ryu Shikun | 9p | W+R | 194 | 2014-09-11 | Judan, 53rd, last preliminary tournament | Final | | 39 | Ko Iso | 8p | Ryu Shikun | 9p | B+R | 181 | 2015-05-28 | Kisei, 40th | League B-1 | | 40 | Ko Iso | 7p | Sakai Hideyuki | 7p | B+0.5 | 258 | 2006-04-06 | Meijin, 31st | League | | 41 | Sakai Hideyuki | 7p | Ko Iso | 7p | B+R | 211 | 2007-05-10 | Meijin, 32nd | League, game 23 | | 42 | Ko Iso | 7p | Sakai Hideyuki | 7p | W+2.5 | 273 | 2008-07-03 | Meijin, 33rd | League | | 43 | Sakai Hideyuki | 8p | Ko Iso | 8p | W+R | 236 | 2015-07-06 | NHK Cup, 63rd | 2nd round | | 44 | Ko Iso | 8p | Sakai Hideyuki | 8p | B+R | 215 | 2015-07-16 | Kisei, 40th | League B-1 | | 45 | Seto Taiki | 7p | Ko Iso | 8p | W+1.5 | 251 | 2011-10-13 | Honinbo, 67th | League | | 46 | Seto Taiki | 7p | Ko Iso | 8p | B+R | 221 | 2013-01-31 | Gosei, 38th | 1 | | 47 | Ko Iso | 8p | Seto Taiki | 7p | B+R | 165 | 2013-03-07 | Honinbo, 68th | League | | 48 | Seto Taiki | 7p | Ko Iso | 8p | W+1.5 | 261 | 2015-03-26 | Tengen, 41st | 2nd round | | 49 | Ko Iso | 8p | Shibano Toramaru | 2p | B+R | 257 | 2016-09-18 | NHK Cup, 64th | 2nd round | | 50 | Shida Tatsuya | 7p | Ko Iso | 8p | B+R | 145 | 2016-04-14 | Oza, 64th, last preliminary tournament | Final | | 51 | Ko Iso | 7p | Shuto Shun | 4p | B+3.5 | 249 | 2006-05-04 | Shinjin-O, 31st | 2 | | 52 | Ko Iso | 7p | Shuto Shun | 6p | B+5.5 | 262 | 2008-03-27 | Tengen, 34th | 2 | | 53 | Ko Iso | 7p | Shuto Shun | 6p | B+R | 181 | 2008-07-10 | Judan, 47th | Losers' Section, Round 1 | | 54 | Ko Iso | 7p | Shuto Shun | 6p | W+6.5 | 253 | 2009-09-03 | Judan, 48th | Losers' Section, Round 2 | | 55 | So Yokoku | 8p | Ko Iso | 7p | W+R | 202 | 2007-09-15 | NEC Cup, 27th | 1 | | 56 | So Yokoku | 9p | Ko Iso | 8p | B+R | 243 | 2015-02-12 | Meijin, 40th | League | | 57 | Ko Iso | 8p | Sonoda Yuichi | 9p | B+4,5 | 258 | 2013-09-01 | NHK Cup, 61st | 2 | | 58 | Suzuki Shinji | 5p | Ko Iso | 8p | W+R | 140 | 2015-02-26 | | | | 59 | Ko Iso | 4p | Suzuki Yoshimichi | 6p | B+R | 171 | 2005-04-14 | Shinjin-O, 30th | Round 2 | | 60 | Ko Iso | 7p | Tajima Shingo | 1p ? | B+R | 157 | 2007-02-08 | Shinjin-O, 32nd | Round 1 | | 61 | Takagi Shoichi | 9p | Ko Iso | 7p | W+1.5 | 254 | 2007-11-01 | Gosei, 33rd | Round 1 | | 62 | Takano Hideki | 7p | Ko Iso | 7p | B+R | 167 | 2008-10-23 | Gosei, 34th | preliminary tournament final | | 63 | Ko Iso | 7p | Takao Shinji | 9p | W+R | 198 | 2006-07-06 | Meijin, 31st | League | | 64 | Takao Shinji | 9p | Ko Iso | 7p | B+R | 203 | 2007-10-13 | NEC Cup, 27th | 2 | | 65 | Ko Iso | 7p | Takao Shinji | 9p | B+R | 169 | 2008-08-07 | Meijin, 33rd | League | | 66 | Takao Shinji | 9p | Ko Iso | 7p | B+R | 203 | 2010-07-15 | Agon Cup, 17th | 2 | | 67 | Ko Iso | 7p | Takao Shinji | 9p | W+R | 180 | 2011-01-20 | Judan, 49th | Losers' Section, Final | | 68 | Ko Iso | 7p | Takao Shinji | 9p | W+R | 160 | 2011-04-21 | Agon Cup, 18th, last preliminary tournament | | | 69 | Takao Shinji | 9p | Ko Iso | 8p | W+R | 228 | 2011-11-24 | Judan, 50th | 3 | | 70 | Takao Shinji | 9p | Ko Iso | 8p | B+R | 127 | 2012-02-09 | Honinbo, 67th | League | | 71 | Takao Shinji | 9p | Ko Iso | 8p | B+R | 227 | 2012-11-01 | Honinbo, 68th | League | | 72 | Takao Shinji | 1p ? | Ko Iso | 8p | B+R | 133 | 2014-07-03 | Meijin, 39th | League | | 73 | Ko Iso | 8p | Takao Shinji | 9p | W+R | 142 | 2015-05-21 | Meijin, 40th | League | | 74 | Takao Shinji | 9p | Ko Iso | 8p | B+R | 185 | 2016-08-04 | Meijin, 41st | League | | 75 | Takemiya Masaki | 9p | Ko Iso | 7p | B+R | 133 | 2009-03-19 | Oza, 57th, last preliminary tournament | Final | | 76 | Takemiya Masaki | 9p | Ko Iso | 7p | B+4,5 | 260 | 2010-06-14 | NHK Cup, 58th | 1 | | 77 | Ko Iso | 7p | Takemiya Masaki | 9p | B+3.5 | 238 | 2011-08-18 | Gosei, 37th, preliminary tournament | | | 78 | Ko Iso | 8p | Takemiya Masaki | 9p | W+R | 164 | 2014-02-06 | Tengen, 40th | 1 | | 79 | Takemiya Masaki | 9p | Ko Iso | 8p | W+6.5 | 264 | 2014-10-23 | Meijin, 40th, last preliminary tournament | | | 80 | Tetsuya Mitani | 7p | Ko Iso | 8p | B+R | 125 | 2016-10-13 | | | | 81 | Tsuruyama Atsushi | 7p | Ko Iso | 8p | W+R | 218 | 2016-08-18 | Honinbo, 72nd, last preilminary tournament | Final | | 82 | Tuo Jiaxi | 3p | Ko Iso | 7p | B+R | 165 | 2008-11-18 | Asian New Star Match, 09th | Team China vs Team Japan | | 83 | Uchida Shuhei | 7p | Ko Iso | 8p | W+R | 180 | 2016-04-07 | Meijin, 41st | League | | 84 | Watanabe Kouki | 1p ? | Ko Iso | 8p | W+R | 202 | 2015-03-12 | Tengen, 41st | 1st round | | 85 | Ko Iso | 7p | Xiao Zhenghao | 6p | W+R | 220 | 2009-06-20 | | | | 86 | Xiao Zhenghao | 7p | Ko Iso | 7p | W+R | 216 | 2010-06-19 | | | | 87 | Xie Yimin | 5p | Ko Iso | 8p | W+R | 178 | 2011-09-08 | Gosei, 37th, preliminary tournament | Final | | 88 | Yamada Kimio | 9p | Ko Iso | 7p | B+R | 187 | 2005-12-08 | Meijin, 31st | League | | 89 | Yamada Kimio | 9p | Ko Iso | 7p | B+R | 265 | 2007-01-11 | Meijin, 32nd | League, game 06 | | 90 | Yamada Kimio | 9p | Ko Iso | 7p | B+3.5 | 263 | 2007-12-20 | Meijin, 33rd | League | | 91 | Yamada Kimio | 9p | Ko Iso | 7p | W+R | 162 | 2008-07-12 | Daiwa-Shoken Cup, 4th | 1 | | 92 | Yamada Kimio | 9p | Ko Iso | 7p | W+5.5 | 289 | 2009-06-04 | NEC Cup, 29th | 1 | | 93 | Yamada Kimio | 9p | Ko Iso | 7p | W+R | 152 | 2010-04-15 | Judan, 49th, last preliminary tournament | Final | | 94 | Yamada Noriyoshi | 9p | Ko Iso | 8p | B+R | 133 | 2011-11-10 | Gosei, 37th | 1 | | 95 | Ko Iso | 7p | Yamada Shinji | 4p | B+R | 155 | 2006-08-10 | Shinjin-O, 31st | Semifinal | | 96 | Ko Iso | 7p | Yamamoto Kentaro | 4p | B+3.5 | 299 | 2006-07-13 | Shinjin-O, 31st | 3 | | 97 | Ko Iso | 7p | Yamashiro Hiroshi | 9p | B+R | 173 | 2008-09-18 | Judan, 47th | Losers' Section, Round 3 | | 98 | Ko Iso | 7p | Yamashiro Hiroshi | 9p | B+4,5 | 266 | 2009-05-21 | Judan, 48th | Winners' Section, Round 1 | | 99 | Yamashita Keigo | 9p | Ko Iso | 7p | B+5.5 | 272 | 2006-06-01 | Meijin, 31st | League | | 100 | Ko Iso | 7p | Yamashita Keigo | 9p | W+R | 142 | 2007-02-12 | Meijin, 32nd | League, game 12 |
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