| # |
Black player |
Rank |
White player |
Rank |
Result |
# moves |
Date |
Event |
Round |
| 1 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+6 | 255 | 1983-03-24 | Honinbo, 38th | League, game 24 | | 2 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+R | 188 | 1984-02-09 | Honinbo, 39th | League, game 18 | | 3 | Kobayashi Koichi | 9p | Iwata Tatsuaki | 9p | B+R | 217 | 1984-10-25 | Honinbo, 40th | League, game 03 | | 4 | Iwata Tatsuaki | 9p | Kobayashi Koichi | 9p | W+4.5 | 255 | 1987-05-14 | Oza, 35th | 1-08 | | 5 | Komatsu Hideki | 6p | Iwata Tatsuaki | 9p | B+5.5 | 258 | 1988-03-24 | Oza, 36th | 1-04 | | 6 | Komatsu Hideki | 6p | Iwata Tatsuaki | 9p | B+2 | 279 | 1989-01-19 | Oza, 37th | 3-4 | | 7 | Komatsu Hideki | 7p | Iwata Tatsuaki | 9p | B+6 | 257 | 1991-12-05 | Meijin, 17th | League, game 01 | | 8 | Kusaka Kaneo | 6p | Iwata Tatsuaki | 8p | W+ | 259 | 1962-04-19 | Oteai, 1962 | | | 9 | Kusaka Kaneo | 7p | Iwata Tatsuaki | 8p | W+3 | 241 | 1964-05-07 | Oteai, 1964 | | | 10 | Kuwata Yasuaki | 7p | Iwata Tatsuaki | 9p | W+R | 138 | 1979-08-02 | Okan Sen, 20th | 4 | | 11 | Kuwata Yasuaki | 8p | Iwata Tatsuaki | 9p | W+R | 158 | 1986-04-10 | Okan Sen, 27th | 2 | | 12 | Iwata Tatsuaki | 9p | Kuwata Yasuaki | 8p | B+R | 153 | 1989-01-12 | Okan Sen, 30th | 1 | | 13 | Iwata Tatsuaki | 9p | Kuwata Yasuaki | 8p | W+0.5 | 248 | 1993-02-18 | Okan Sen, 34th | 2 | | 14 | Liu Jing | 5p ? | Iwata Tatsuaki | 5p ? | W+2.5 | 252 | 1988-09-23 | NEC Cup, 08th | Round 2 | | 15 | Maeda Nobuaki | 9p | Iwata Tatsuaki | 9p | W+R | 156 | 1968-01-01 | Nihon Ki-in Championship, 16th | Quaterfinal - 3 | | 16 | Magari Reiki | 8p | Iwata Tatsuaki | 8p | B+R | 203 | 1962-06-14 | Oteai, 1962 | | | 17 | Iwata Tatsuaki | 9p | Magari Reiki | 9p | B+6.5 | 276 | 1974-08-29 | Judan, 13th | Round 2 | | 18 | Iwata Tatsuaki | 9p | Matsuoka Hideki | 2p | B+0 | 183 | 1988-03-03 | Okan Sen, 29th | 2 | | 19 | Iwata Tatsuaki | 9p | Mimura Tomoyasu | 6p | W+R | 208 | 1991-08-29 | Meijin, 17th | Preliminary Round 3 | | 20 | Miyashita Shuyo | 9p | Iwata Tatsuaki | 7p | W+5 | 213 | 1961-01-19 | Meijin Old, 01st | League | | 21 | Iwata Tatsuaki | 8p | Miyashita Shuyo | 9p | B+R | 145 | 1963-01-01 | Judan, 02nd | Losers' Section, Round 2 | | 22 | Miyashita Shuyo | 9p | Iwata Tatsuaki | 9p | B+5.5 | 250 | 1968-01-01 | Nihon Ki-in Championship, 16th | Semifinal | | 23 | Miyashita Shuyo | 9p | Iwata Tatsuaki | 9p | B+R | 217 | 1971-01-01 | Nihon Ki-in Championship, 19th | Preliminaries, 1 | | 24 | Moriyama Naoki | 9p | Iwata Tatsuaki | 9p | W+R | 180 | 1997-01-23 | Gosei, 22nd | 1/16 Final - 12 | | 25 | Murashima Yoshinori | 7p | Iwata Tatsuaki | 8p | W+2 | 251 | 1961-01-01 | Oteai, 1961 | Round 18 | | 26 | Nabeshima Ichiro | 6p | Iwata Tatsuaki | 8p | W+R | 190 | 1963-04-25 | Oteai, 1963 | | | 27 | Iwata Tatsuaki | 7p | Nakamura Yutaro | 7p | B+R | 131 | 1960-07-07 | Saikyo Tournament, 06th | Preliminaries | | 28 | Nakano Hironari | 6p | Iwata Tatsuaki | 9p | W+10.5 | 283 | 1990-11-22 | Okan Sen, 32nd | 1 | | 29 | Nakano Hironari | 8p | Iwata Tatsuaki | 9p | B+2.5 | 239 | 1995-03-16 | Okan Sen, 36th | 1 | | 30 | Nakaoka Jiro | 6p | Iwata Tatsuaki | 8p | W+6 | 240 | 1963-10-17 | Oteai, 1963 | | | 31 | Iwata Tatsuaki | 9p | Nie Weiping | 5p ? | W+2.5 | 220 | 1976-04-17 | China-Japan Go Exchange, 1976 | Round 6 | | 32 | Iwata Tatsuaki | 9p | O Meien | 9p | B+0.5 | 234 | 2002-02-21 | Tengen, 28th | 1/8 Final - 1 | | 33 | Iwata Tatsuaki | 9p | O Meien | 9p | B+R | 215 | 2002-03-14 | Tengen, 28th | 1/8 Final - 2 | | 34 | O Rissei | 9p | Iwata Tatsuaki | 9p | W+1.5 | 250 | 1991-06-10 | Ryusei Cup, 01st | Block B, Game 22 | | 35 | Iwata Tatsuaki | 9p | O Rissei | 9p | B+R | 199 | 1991-10-24 | Meijin, 17th | Qualifications, Group 2, Final | | 36 | O Rissei | 8p | Iwata Tatsuaki | 9p | W+R | 262 | 1997-12-17 | Oza, 36th | Qualification-3, game 1 | | 37 | Iwata Tatsuaki | 9p | O Rissei | 9p | W+5 | 273 | 2001-05-03 | Tengen, 27th | 1-17 | | 38 | Iwata Tatsuaki | 9p | Ogata Masaki | 5p | B+R | 133 | 1984-03-22 | Okan Sen, 25th | 2 | | 39 | Iwata Tatsuaki | 9p | Ogata Masaki | 7p | W+R | 198 | 1988-09-15 | Okan Sen, 29th | 3 | | 40 | Ogata Masaki | 7p | Iwata Tatsuaki | 9p | B+1.5 | 262 | 1989-11-09 | Okan Sen, 30th | Final | | 41 | Iwata Tatsuaki | 9p | Ogata Masaki | 8p | B+R | 169 | 1992-12-24 | Okan Sen, 34th | 1 | | 42 | Iwata Tatsuaki | 9p | Ohira Shuzo | 9p | B+R | 211 | 1965-12-23 | Judan, 05th | preliminary, 3rd round | | 43 | Iwata Tatsuaki | 9p | Ohira Shuzo | 9p | W+3.5 | 247 | 1969-01-01 | All-Japan First Place Championship, 1st | 1 | | 44 | Iwata Tatsuaki | 9p | Ohira Shuzo | 9p | W+R | 204 | 1973-12-06 | Pro Best Ten, 11th | 1-08 | | 45 | Ohira Shuzo | 9p | Iwata Tatsuaki | 9p | B+0.5 | 255 | 1975-04-24 | Judan, 14th | 1 | | 46 | Iwata Tatsuaki | 9p | Ohira Shuzo | 9p | W+R | 172 | 1985-05-09 | Tengen, 11th | | | 47 | Otake Hideo | 9p | Iwata Tatsuaki | 9p | B+3 | 249 | | Gosei, 03rd | | | 48 | Iwata Tatsuaki | 9p | Otake Hideo | 7p | W+4.5 | 261 | 1966-01-06 | Judan, 05th | preliminary, 3rd round | | 49 | Otake Hideo | 9p | Iwata Tatsuaki | 9p | B+5 | 255 | 1982-07-10 | Judan, 21st | Winners' Section, Quaterfinal - 4 | | 50 | Iwata Tatsuaki | 9p | Otake Hideo | 9p | W+0.5 | 252 | 1986-09-11 | Honinbo, 42nd | 3rd Preliminary, Semi-final | | 51 | Iwata Tatsuaki | 9p | Otake Hideo | 9p | W+8.5 | 256 | 1986-11-21 | Meijin, 12th | League qualification, Group 2, Final | | 52 | Otake Hideo | 9p | Iwata Tatsuaki | 9p | B+3 | 234 | 1991-01-24 | Oza, 39th | 3-6 | | 53 | Otake Hideo | 9p | Iwata Tatsuaki | 9p | B+R | 199 | 1992-04-16 | Meijin, 17th | League, game 19 | | 54 | Oya Koichi | 8p | Iwata Tatsuaki | 9p | W+R | 232 | 1997-03-06 | Gosei, 22nd | 1/8 Final - 8 | | 55 | Oyama Kunio | 9p | Iwata Tatsuaki | 9p | B+2.5 | 230 | 1984-03-15 | Tengen, 10th | 1 | | 56 | Iwata Tatsuaki | 9p | Redmond, Michael | 5p | B+R | 167 | 1986-11-27 | Gosei, 12th | 1-07 | | 57 | Iwata Tatsuaki | 8p | Rin Kaiho | 7p | W+1.5 | 239 | 1964-01-01 | Honinbo, 20th | Qualifications, Group 3, Final | | 58 | Iwata Tatsuaki | 9p | Rin Kaiho | 9p | W+1.5 | 273 | 1974-06-13 | Nihon Ki-in Championship, 22nd | 1-15 | | 59 | Iwata Tatsuaki | 9p | Rin Kaiho | 9p | W+R | 186 | 1975-01-16 | Judan, 13th | Losers' Section, Round 3 | | 60 | Rin Kaiho | 9p | Iwata Tatsuaki | 9p | W+10.5 | 290 | 1982-02-11 | Honinbo, 37th | League, game 14 | | 61 | Rin Kaiho | 9p | Iwata Tatsuaki | 9p | B+R | 139 | 1982-12-16 | Honinbo, 38th | League, game 14 | | 62 | Iwata Tatsuaki | 9p | Rin Kaiho | 9p | W+6.5 | 243 | 1991-05-20 | Ryusei Cup, 01st | Block B, Game 23 | | 63 | Iwata Tatsuaki | 9p | Rin Kaiho | 9p | W+R | 214 | 1992-08-06 | Meijin, 17th | League, game 34 | | 64 | Rin Kaiho | 9p | Iwata Tatsuaki | 9p | B+0.5 | 277 | 1998-05-11 | Ryusei Cup, 07th | Block B, Game 22 | | 65 | Iwata Tatsuaki | 9p | Saijo Masataka | 7p | B+R | 245 | 1979-01-25 | Okan Sen, 20th | 2 | | 66 | Iwata Tatsuaki | 9p | Saijo Masataka | 8p | B+6.5 | 246 | 1982-08-26 | Okan Sen, 23rd | 3 | | 67 | Saijo Masataka | 8p | Iwata Tatsuaki | 9p | W+6.5 | 216 | 1985-08-15 | Okan Sen, 26th | 3 | | 68 | Sakai Takeshi | 8p | Iwata Tatsuaki | 9p | W+2.5 | 266 | 1981-10-08 | Honinbo, 37th | League-entry preliminary, final | | 69 | Iwata Tatsuaki | 9p | Sakai Takeshi | 9p | B+4,5 | 261 | 1998-05-11 | Ryusei Cup, 07th | Block B, Game 21 | | 70 | Sakata Eio | 9p | Iwata Tatsuaki | 6p | B+R | 143 | 1958-07-30 | Saikyo Tournament, 02nd | League | | 71 | Iwata Tatsuaki | 7p | Sakata Eio | 9p | W+3.5 | 251 | 1959-06-10 | Saikyo Tournament, 02nd | League | | 72 | Iwata Tatsuaki | 7p | Sakata Eio | 9p | W+R | 170 | 1960-05-18 | Saikyo Tournament, 03rd | Round 4 of 10 | | 73 | Sakata Eio | 9p | Iwata Tatsuaki | 7p | B+R | 213 | 1960-08-10 | Strongest Player, 03rd | Round 6 of 10 | | 74 | Sakata Eio | 9p | Iwata Tatsuaki | 7p | B+R | 153 | 1960-10-06 | Saikyo Tournament, 06th | Preliminaries | | 75 | Iwata Tatsuaki | 8p | Sakata Eio | 9p | W+R | 218 | 1962-02-08 | Meijin Old, 01st | League | | 76 | Sakata Eio | 9p | Iwata Tatsuaki | 8p | B+R | 213 | 1962-03-15 | Judan, 01st | Winners' Section, Round 1 | | 77 | Iwata Tatsuaki | 8p | Sakata Eio | 9p | B+10 | 259 | 1972-01-01 | Pro Best Ten, 09th | Semifinal | | 78 | Sakata Eio | 9p | Iwata Tatsuaki | 9p | B+R | 167 | 1974-08-08 | Oza, 22nd | Quaterfinal - 3 | | 79 | Sakata Eio | 9p | Iwata Tatsuaki | 9p | B+7 | 249 | 1982-01-28 | Honinbo, 37th | League, game 12 | | 80 | Sakata Eio | 9p | Iwata Tatsuaki | 9p | W+R | 174 | 1983-02-24 | Honinbo, 38th | League, game 20 | | 81 | Sakata Eio | 9p | Iwata Tatsuaki | 9p | W+6.5 | 284 | 1983-11-03 | Gosei, 09th | 1 | | 82 | Iwata Tatsuaki | 9p | Sakata Eio | 9p | B+13.5 | 282 | 1984-04-05 | Honinbo, 39th | League, game 25 | | 83 | Shimamura Toshihiro | 9p | Iwata Tatsuaki | 8p | W+0.5 | 245 | 1962-04-26 | Judan, 01st | | | 84 | Iwata Tatsuaki | 7p | Shimamura Toshihiro | 9p | B+1 | 235 | 1962-09-14 | Meijin Old, 01st | League | | 85 | Shimamura Toshihiro | 9p | Iwata Tatsuaki | 8p | B+R | 247 | 1963-01-01 | Nihon Ki-in Championship, 11th | 3 | | 86 | Shinoda Hideyuki | 5p | Iwata Tatsuaki | 9p | B+0.5 | 271 | 1993-12-16 | Okan Sen, 35th | 1 | | 87 | Shinohara Masami | 8p | Iwata Tatsuaki | 8p | B+4 | 259 | 1964-05-21 | Oteai, 1964 | | | 88 | Iwata Tatsuaki | 9p | Shiraishi Yutaka | 9p | W+0.5 | 232 | 1985-02-14 | Honinbo, 40th | League, game 18 | | 89 | Someya Kazuo | 7p | Iwata Tatsuaki | 8p | W+R | 128 | 1963-09-26 | Oteai, 1963 | | | 90 | Iwata Tatsuaki | 9p | Sonoda Yuichi | 9p | B+R | 195 | 1983-07-28 | Judan, 22nd | 1/8 Final - 8 | | 91 | Iwata Tatsuaki | 9p | Sonoda Yuichi | 9p | B+R | 223 | 2002-01-17 | Tengen, 28th | 1-05 | | 92 | Iwata Tatsuaki | 7p | Sugiuchi Masao | 9p | W+2 | 225 | 1961-10-05 | Meijin Old, 01st | League | | 93 | Iwata Tatsuaki | 8p | Sugiuchi Masao | 9p | W+6.5 | 249 | 1963-01-01 | Judan, 02nd | Losers' Section, Round 3 | | 94 | Iwata Tatsuaki | 9p | Sugiuchi Masao | 9p | B+R | 185 | 1972-01-01 | Pro Best Ten, 09th | Round 3 | | 95 | Iwata Tatsuaki | 9p | Sugiuchi Masao | 9p | W+1.5 | 288 | 1981-07-23 | Judan, 20th | Preliminary round | | 96 | Iwata Tatsuaki | 9p | Sugiuchi Masao | 9p | B+R | 269 | 1982-03-06 | Judan, 21st | 1/8 Final - 2 | | 97 | Iwata Tatsuaki | 9p | Sugiuchi Masao | 9p | W+2 | 252 | 1983-09-08 | Judan, 22nd | Losers' Section, 2-1 | | 98 | Sugiuchi Masao | 9p | Iwata Tatsuaki | 9p | B+R | 167 | 1984-10-06 | Judan, 23rd | Losers' Section, Round 2 | | 99 | Sumino Tsunehiro | 7p | Iwata Tatsuaki | 8p | W+2 | 220 | 1962-05-03 | Oteai, 1962 | | | 100 | Iwata Tatsuaki | 6p | Takagawa Shukaku | 8p | B+4 | 245 | 1959-03-29 | Nihon Saikyo, 2nd | League |
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