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International  general information | player biography | iwata tatsuaki | detailed statistics  
Over the years
Period Games Win Loss Jigo None Unkn Scoring
2004-2009 3 0 3 0 0 0 0.00%
1999-2004 8 4 4 0 0 0 50.00%
1994-1999 19 8 11 0 0 0 42.11%
1989-1994 47 19 28 0 0 0 40.43%
1984-1989 84 37 47 0 0 0 44.05%
1979-1984 114 63 51 0 0 0 55.26%
1974-1979 58 23 35 0 0 0 39.66%
1969-1974 115 65 50 0 0 0 56.52%
1964-1969 108 58 50 0 0 0 53.70%
1959-1964 124 64 56 4 0 0 53.23%
1955-1959 19 9 10 0 0 0 47.37%

Over the color
Color Games Win Loss Jigo None Unkn Scoring
Black 350 179 168 3 0 0 51.57%
White 349 171 177 1 0 0 49.14%
Overall 699 350 345 4 0 0 50.36%

Over the komi
Komi Games Win Loss Jigo None Unkn Scoring
Giving  6.50 1 0 1 0 0 0 0.00%
Giving  5.50 235 122 113 0 0 0 51.91%
Giving  5.00 28 11 17 0 0 0 39.29%
Giving  4.50 59 30 29 0 0 0 50.85%
Giving  2.00 1 1 0 0 0 0 100.00%
No komi 67 37 26 4 0 0 58.21%
Receiving  2.50 2 1 1 0 0 0 50.00%
Receiving  4.50 64 30 34 0 0 0 46.88%
Receiving  5.00 32 17 15 0 0 0 53.12%
Receiving  5.50 208 101 107 0 0 0 48.56%
Receiving  6.50 2 0 2 0 0 0 0.00%

Over handicap
Handicap Games Win Loss Jigo None Unkn Scoring
Even game 699 350 345 4 0 0 50.36%

Over result margins

Margin Games Fraction
-R 128 18.31%
-10 8 1.14%
-5 59 8.44%
-4 22 3.15%
-3 35 5.01%
-2 34 4.86%
-1 25 3.58%
-0 34 4.86%
+0 29 4.15%
+1 23 3.29%
+2 23 3.29%
+3 20 2.86%
+4 16 2.29%
+5 33 4.72%
+10 11 1.57%
+R 195 27.90%

Over events
Event Games Win Loss Jigo None Unkn Scoring
? 317 182 135 0 0 0 57.41%
China-Japan supergo 5 1 4 0 0 0 20.00%
Dai-Ichi 1 0 1 0 0 0 0.00%
Fujitsu Cup 2 1 1 0 0 0 50.00%
Gosei tournament 18 7 11 0 0 0 38.89%
Honinbo title 1 0 1 0 0 0 0.00%
Honinbo tournament 73 30 43 0 0 0 41.10%
Japanese NEC Cup 1 0 1 0 0 0 0.00%
Judan tournament 58 22 36 0 0 0 37.93%
Meijin tournament 30 10 20 0 0 0 33.33%
NHK Cup 20 12 8 0 0 0 60.00%
Nihon Ki-in championship 11 5 6 0 0 0 45.45%
Okan Cup 42 25 17 0 0 0 59.52%
Oteai 23 13 9 1 0 0 58.70%
Oza tournament 23 8 15 0 0 0 34.78%
Pro Best-Ten 9 4 5 0 0 0 44.44%
Ryu-Sei Cup 5 2 3 0 0 0 40.00%
Saikyo 17 7 8 2 0 0 47.06%
Strongest Player 15 8 6 1 0 0 56.67%
Tengen tournament 25 12 13 0 0 0 48.00%
Top-Position 3 1 2 0 0 0 33.33%

Over players
Player Games Win Loss Jigo None Unkn Scoring
? 2 2 0 0 0 0 100.00%
Akiyama Jirō 2 0 2 0 0 0 0.00%
Aragaki Takeshi 1 0 1 0 0 0 0.00%
Awaji Shūzō 7 3 4 0 0 0 42.86%
Baba Shigeru 2 2 0 0 0 0 100.00%
Chen Zude 3 1 2 0 0 0 33.33%
Chino Tadahiko 5 2 3 0 0 0 40.00%
Chō Chikun 7 3 4 0 0 0 42.86%
Fujiki Hitomi 1 1 0 0 0 0 100.00%
Fujisawa Hōsai 15 7 8 0 0 0 46.67%
Fujisawa Shūkō 12 6 5 1 0 0 54.17%
Fukuda Masayoshi 1 1 0 0 0 0 100.00%
Fukui Masaaki 2 2 0 0 0 0 100.00%
Fukui Susumu 1 0 1 0 0 0 0.00%
Gotō Shungo 1 1 0 0 0 0 100.00%
Hamajima Hisayoshi 3 3 0 0 0 0 100.00%
Handa Dogen 8 1 7 0 0 0 12.50%
Hane Yasumasa 25 12 13 0 0 0 48.00%
Hasegawa Akira 1 0 1 0 0 0 0.00%
Hasegawa Sunao 4 2 2 0 0 0 50.00%
Hashimoto Shoji 16 7 9 0 0 0 43.75%
Hashimoto Utaro 28 12 16 0 0 0 42.86%
Hashimoto Yoshimi 11 5 6 0 0 0 45.45%
Hayase Hiroshi 2 2 0 0 0 0 100.00%
Hayashi Yutaro 3 1 2 0 0 0 33.33%
Hikosaka Naoto 3 1 2 0 0 0 33.33%
Hirano Masaaki 2 1 1 0 0 0 50.00%
Hiroe Katsuhiko 1 1 0 0 0 0 100.00%
Hisai Keishi 8 7 1 0 0 0 87.50%
Honda Kazuko 2 2 0 0 0 0 100.00%
Honda Kunihisa 5 2 3 0 0 0 40.00%
Hoshino Toshi 1 1 0 0 0 0 100.00%
Hosokawa Senjin 2 2 0 0 0 0 100.00%
Hotta Seiji 1 0 1 0 0 0 0.00%
Imamura Yoshiaki 2 0 2 0 0 0 0.00%
Inagaki Kōichi 4 4 0 0 0 0 100.00%
Ishida Akira 2 1 1 0 0 0 50.00%
Ishida Yoshio 10 4 6 0 0 0 40.00%
Ishige Kakuo 1 1 0 0 0 0 100.00%
Ishii Kunio 4 2 2 0 0 0 50.00%
Ishii Shinzo 1 0 1 0 0 0 0.00%
Isogawa Masao 2 1 1 0 0 0 50.00%
Itō Yōji 1 1 0 0 0 0 100.00%
Iwamoto Kaoru 3 3 0 0 0 0 100.00%
Iyama Yuta 1 0 1 0 0 0 0.00%
Izumitani Minoru 1 1 0 0 0 0 100.00%
Izumo Eiji 1 1 0 0 0 0 100.00%
Kada Katsuji 6 4 2 0 0 0 66.67%
Kaji Kazutame 2 2 0 0 0 0 100.00%
Kajiwara Takeo 8 4 4 0 0 0 50.00%
Kamimura Haruo 1 1 0 0 0 0 100.00%
Kamimura Kunio 1 1 0 0 0 0 100.00%
Kanashima Tadashi 2 2 0 0 0 0 100.00%
Kanda Ei 1 1 0 0 0 0 100.00%
Kanno Kiyonori 2 1 1 0 0 0 50.00%
Kanō Yoshinori 8 5 3 0 0 0 62.50%
Kataoka Satoshi 2 1 1 0 0 0 50.00%
Katō Masao 9 3 6 0 0 0 33.33%
Kim In 1 1 0 0 0 0 100.00%
Kitamura Hiroshi 2 2 0 0 0 0 100.00%
Kitani Minoru 12 5 6 1 0 0 45.83%
Kiyonari Tetsuya 3 1 2 0 0 0 33.33%
Kobayashi Koichi 12 2 10 0 0 0 16.67%
Kobayashi Reiko 2 2 0 0 0 0 100.00%
Kojima Takaho 3 1 2 0 0 0 33.33%
Komatsu Hideki 6 1 5 0 0 0 16.67%
Komatsu Nobuaki 1 1 0 0 0 0 100.00%
Kubouchi Shuchi 3 3 0 0 0 0 100.00%
Kudō Norio 8 4 4 0 0 0 50.00%
Kurahashi Shozo 1 1 0 0 0 0 100.00%
Kurosawa Tadanao 2 1 1 0 0 0 50.00%
Kusaka Kaneo 7 5 2 0 0 0 71.43%
Kuwahara Munehisa 3 3 0 0 0 0 100.00%
Kuwata Yasuaki 7 6 1 0 0 0 85.71%
Kōri Toshio 4 4 0 0 0 0 100.00%
Maeda Nobuaki 6 5 1 0 0 0 83.33%
Magari Reiki 7 4 3 0 0 0 57.14%
Matsumoto Tokuji 1 1 0 0 0 0 100.00%
Matsuoka Akira 1 1 0 0 0 0 100.00%
Matsuoka Hideki 1 1 0 0 0 0 100.00%
Matsuoka Teruo 2 2 0 0 0 0 100.00%
Matsuura Yoshihiro 1 1 0 0 0 0 100.00%
Michael Redmond 1 1 0 0 0 0 100.00%
Mimura Tomoyasu 2 2 0 0 0 0 100.00%
Miwa Yoshirō 2 0 2 0 0 0 0.00%
Miyamoto Naoki 1 1 0 0 0 0 100.00%
Miyamoto Yoshihisa 1 1 0 0 0 0 100.00%
Miyashita Shuyo 14 2 12 0 0 0 14.29%
Miyazawa Gorō 3 0 3 0 0 0 0.00%
Mizuno Ichirō 1 1 0 0 0 0 100.00%
Morishima Kaoru 1 1 0 0 0 0 100.00%
Moriyama Naoki 3 1 2 0 0 0 33.33%
Murashima Yoshinori 3 3 0 0 0 0 100.00%
Nabeshima Ichirō 5 3 2 0 0 0 60.00%
Nagamura Yutaro 3 3 0 0 0 0 100.00%
Nakagawa Shinsuke 1 1 0 0 0 0 100.00%
Nakano Hironari 2 1 1 0 0 0 50.00%
Nakaoka Jirō 1 1 0 0 0 0 100.00%
Nie Weiping 2 0 2 0 0 0 0.00%
Nishigami Yoshihiko 1 1 0 0 0 0 100.00%
Ogata Masaki 4 2 2 0 0 0 50.00%
Ogoshi Ichirō 1 1 0 0 0 0 100.00%
Okumura Hideo 2 2 0 0 0 0 100.00%
Oyama Kunio 2 1 1 0 0 0 50.00%
Rin Kaihō 13 3 10 0 0 0 23.08%
Saijō Masataka 4 4 0 0 0 0 100.00%
Sakai Michiharu 7 6 1 0 0 0 85.71%
Sakai Takeshi 6 3 3 0 0 0 50.00%
Sakai Toshio 1 1 0 0 0 0 100.00%
Sakakibara Shōji 2 1 1 0 0 0 50.00%
Sakata Eio 26 7 19 0 0 0 26.92%
San'ō Hirotaka 2 1 1 0 0 0 50.00%
Satō Masaharu 2 2 0 0 0 0 100.00%
Segawa Yoshio 8 6 2 0 0 0 75.00%
Sekiyama Toshio 2 0 2 0 0 0 0.00%
Seo Hisashi 2 2 0 0 0 0 100.00%
Shimamura Toshihiro 12 3 9 0 0 0 25.00%
Shinoda Hideyuki 1 0 1 0 0 0 0.00%
Shinohara Masami 2 1 1 0 0 0 50.00%
Shioiri Itsuzo 1 1 0 0 0 0 100.00%
Shiraishi Yutaka 3 1 2 0 0 0 33.33%
Someya Kazuo 4 3 1 0 0 0 75.00%
Sonoda Yuichi 7 7 0 0 0 0 100.00%
Sugiuchi Masao 14 5 9 0 0 0 35.71%
Sumino Tsunehiro 5 5 0 0 0 0 100.00%
Suzuki Etsuo 3 3 0 0 0 0 100.00%
Suzuki Goro 1 1 0 0 0 0 100.00%
Tainaka Shin 2 2 0 0 0 0 100.00%
Takagawa Kaku 17 8 9 0 0 0 47.06%
Takagi Shōichi 11 6 5 0 0 0 54.55%
Takahashi Toshimitsu 1 1 0 0 0 0 100.00%
Takemiya Masaki 15 4 11 0 0 0 26.67%
Tono Hiroaki 6 2 4 0 0 0 33.33%
Tozawa Akinobu 1 0 1 0 0 0 0.00%
Tsuchida Masamitsu 9 8 1 0 0 0 88.89%
Tsujii Ryōtarō 3 3 0 0 0 0 100.00%
Ushikubo Yoshitaka 1 1 0 0 0 0 100.00%
Ushinohama Satsuo 2 1 1 0 0 0 50.00%
Watanabe Shokichi 2 2 0 0 0 0 100.00%
Wu Ching-Yuan 12 1 9 2 0 0 16.67%
Yamabe Toshirō 9 1 8 0 0 0 11.11%
Yamada Kimio 1 0 1 0 0 0 0.00%
Yamashiro Hiroshi 12 3 9 0 0 0 25.00%
Yata Naoki 1 1 0 0 0 0 100.00%
Yoda Norimoto 2 0 2 0 0 0 0.00%
Yokota Shigeaki 1 0 1 0 0 0 0.00%
Yoshida Yōichi 5 3 2 0 0 0 60.00%
Yukawa Mitsuhisa 1 0 1 0 0 0 0.00%
Ō Meien 2 2 0 0 0 0 100.00%
Ō Rissei 5 3 2 0 0 0 60.00%
Ōeda Yūsuke 1 0 1 0 0 0 0.00%
Ōhira Shūzō 9 3 6 0 0 0 33.33%
Ōkubo Ichigen 7 2 5 0 0 0 28.57%
Ōtake Hideo 17 2 15 0 0 0 11.76%
Ōya Kōichi 1 1 0 0 0 0 100.00%

Over the ranks
Rank Games Win Loss Jigo None Unkn Scoring
? 5 3 2 0 0 0 60.00%
6p 23 12 11 0 0 0 52.17%
7p 52 27 22 3 0 0 54.81%
8p 99 48 50 1 0 0 48.99%
9p 520 260 260 0 0 0 50.00%

Over the length
Moves Games Win Loss Jigo None Unkn Scoring
50-100 4 4 0 0 0 0 100.00%
100-150 58 46 12 0 0 0 79.31%
150-200 172 90 82 0 0 0 52.33%
200-250 210 103 103 4 0 0 50.00%
250-300 232 97 135 0 0 0 41.81%
300-350 23 10 13 0 0 0 43.48%

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