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International  general information | player biography | iwata tatsuaki | detailed statistics  
Over the years
Period Games Win Loss Jigo None Unkn Scoring
2003-2008 1 0 1 0 0 0 0.00%
1993-1998 5 1 4 0 0 0 20.00%
1988-1993 23 10 13 0 0 0 43.48%
1983-1988 56 26 30 0 0 0 46.43%
1978-1983 57 31 26 0 0 0 54.39%
1973-1978 14 3 11 0 0 0 21.43%
1968-1973 12 4 8 0 0 0 33.33%
1963-1968 32 17 15 0 0 0 53.12%
1958-1963 56 17 35 4 0 0 33.93%
1955-1958 2 1 1 0 0 0 50.00%

Over the color
Color Games Win Loss Jigo None Unkn Scoring
Black 123 55 65 3 0 0 45.93%
White 135 55 79 1 0 0 41.11%
Overall 258 110 144 4 0 0 43.41%

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 93 46 47 0 0 0 49.46%
Giving  5.00 6 2 4 0 0 0 33.33%
Giving  4.50 5 0 5 0 0 0 0.00%
Giving  2.00 1 1 0 0 0 0 100.00%
No komi 46 19 23 4 0 0 45.65%
Receiving  2.50 2 1 1 0 0 0 50.00%
Receiving  4.50 9 3 6 0 0 0 33.33%
Receiving  5.00 9 2 7 0 0 0 22.22%
Receiving  5.50 86 36 50 0 0 0 41.86%

Over handicap
Handicap Games Win Loss Jigo None Unkn Scoring
Even game 258 110 144 4 0 0 43.41%

Over result margins

Margin Games Fraction
-R 60 23.26%
-10 2 0.78%
-5 26 10.08%
-4 8 3.10%
-3 12 4.65%
-2 15 5.81%
-1 9 3.49%
-0 12 4.65%
+0 6 2.33%
+1 9 3.49%
+2 9 3.49%
+3 7 2.71%
+4 4 1.55%
+5 11 4.26%
+10 5 1.94%
+R 59 22.87%

Over events
Event Games Win Loss Jigo None Unkn Scoring
? 9 4 5 0 0 0 44.44%
China-Japan supergo 3 1 2 0 0 0 33.33%
Dai-Ichi 1 0 1 0 0 0 0.00%
Fujitsu Cup 2 1 1 0 0 0 50.00%
Gosei tournament 11 3 8 0 0 0 27.27%
Honinbo title 1 0 1 0 0 0 0.00%
Honinbo tournament 36 17 19 0 0 0 47.22%
Judan tournament 41 20 21 0 0 0 48.78%
Meijin tournament 24 7 17 0 0 0 29.17%
Nihon Ki-in championship 7 2 5 0 0 0 28.57%
Okan Cup 42 25 17 0 0 0 59.52%
Oteai 23 13 9 1 0 0 58.70%
Oza tournament 15 4 11 0 0 0 26.67%
Pro Best-Ten 7 2 5 0 0 0 28.57%
Saikyo 12 2 8 2 0 0 25.00%
Strongest Player 4 0 3 1 0 0 12.50%
Tengen tournament 17 8 9 0 0 0 47.06%
Top-Position 3 1 2 0 0 0 33.33%

Over players
Player Games Win Loss Jigo None Unkn Scoring
? 1 1 0 0 0 0 100.00%
Aragaki Takeshi 1 0 1 0 0 0 0.00%
Awaji Shuzo 6 2 4 0 0 0 33.33%
Baba Shigeru 2 2 0 0 0 0 100.00%
Chen Zude 3 1 2 0 0 0 33.33%
Chino Tadahiko 1 0 1 0 0 0 0.00%
Cho Chikun 4 2 2 0 0 0 50.00%
Fujisawa Hideyuki 5 2 2 1 0 0 50.00%
Fujisawa Hosai 7 4 3 0 0 0 57.14%
Fukui Masaaki 1 1 0 0 0 0 100.00%
Handa Dogen 2 0 2 0 0 0 0.00%
Hane Yasumasa 10 5 5 0 0 0 50.00%
Hasegawa Sunao 2 0 2 0 0 0 0.00%
Hashimoto Shoji 4 2 2 0 0 0 50.00%
Hashimoto Utaro 3 0 3 0 0 0 0.00%
Hashimoto Yoshimi 4 0 4 0 0 0 0.00%
Hayashi Yutaro 1 0 1 0 0 0 0.00%
Hikosaka Naoto 1 1 0 0 0 0 100.00%
Hiroe Katsuhiko 1 1 0 0 0 0 100.00%
Hisai Keishi 2 2 0 0 0 0 100.00%
Honda Kunihisa 2 2 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 Koichi 3 3 0 0 0 0 100.00%
Ishida Yoshio 7 3 4 0 0 0 42.86%
Isogawa Masao 1 0 1 0 0 0 0.00%
Iwamoto Kaoru 1 1 0 0 0 0 100.00%
Iyama Yuta 1 0 1 0 0 0 0.00%
Kada Katsuji 3 2 1 0 0 0 66.67%
Kajiwara Takeo 4 2 2 0 0 0 50.00%
Kano Yoshinori 2 1 1 0 0 0 50.00%
Kataoka Satoshi 1 1 0 0 0 0 100.00%
Kato Masao 5 3 2 0 0 0 60.00%
Kitamura Hiroshi 2 2 0 0 0 0 100.00%
Kitani Minoru 12 5 6 1 0 0 45.83%
Kobayashi Koichi 9 0 9 0 0 0 0.00%
Komatsu Hideki 2 0 2 0 0 0 0.00%
Kori Toshio 2 2 0 0 0 0 100.00%
Kudo Norio 1 1 0 0 0 0 100.00%
Kusaka Kaneo 2 2 0 0 0 0 100.00%
Kuwata Yasuaki 4 3 1 0 0 0 75.00%
Maeda Nobuaki 2 2 0 0 0 0 100.00%
Magari Reiki 2 1 1 0 0 0 50.00%
Matsuoka Hideki 1 1 0 0 0 0 100.00%
Michael Redmond 1 1 0 0 0 0 100.00%
Miyashita Shuyo 4 1 3 0 0 0 25.00%
Miyazawa Goro 2 0 2 0 0 0 0.00%
Nabeshima Ichiro 1 1 0 0 0 0 100.00%
Nagamura Yutaro 1 1 0 0 0 0 100.00%
Nakano Hironari 2 1 1 0 0 0 50.00%
Nakaoka Jiro 1 1 0 0 0 0 100.00%
O Rissei 2 2 0 0 0 0 100.00%
Ogata Masaki 4 2 2 0 0 0 50.00%
Ohira Shuzo 6 1 5 0 0 0 16.67%
Otake Hideo 6 0 6 0 0 0 0.00%
Oyama Kunio 1 0 1 0 0 0 0.00%
Rin Kaiho 6 1 5 0 0 0 16.67%
Saijo Masataka 4 4 0 0 0 0 100.00%
Sakai Michiharu 1 1 0 0 0 0 100.00%
Sakai Takeshi 2 1 1 0 0 0 50.00%
Sakata Eio 15 3 12 0 0 0 20.00%
Segawa Yoshio 2 1 1 0 0 0 50.00%
Shimamura Toshihiro 4 2 2 0 0 0 50.00%
Shinoda Hideyuki 1 0 1 0 0 0 0.00%
Shinohara Masami 1 0 1 0 0 0 0.00%
Shiraishi Yutaka 1 0 1 0 0 0 0.00%
Someya Kazuo 1 1 0 0 0 0 100.00%
Sonoda Yuichi 4 4 0 0 0 0 100.00%
Sugiuchi Masao 8 2 6 0 0 0 25.00%
Sumino Tsunehiro 2 2 0 0 0 0 100.00%
Takagawa Kaku 2 1 1 0 0 0 50.00%
Takagi Shoichi 4 1 3 0 0 0 25.00%
Takemiya Masaki 7 3 4 0 0 0 42.86%
Tono Hiroaki 1 0 1 0 0 0 0.00%
Tsuchida Masamitsu 3 3 0 0 0 0 100.00%
Wu Ching-Yuan 12 1 9 2 0 0 16.67%
Yamashiro Hiroshi 10 3 7 0 0 0 30.00%
Yoda Norimoto 1 0 1 0 0 0 0.00%

Over the ranks
Rank Games Win Loss Jigo None Unkn Scoring
? 2 1 1 0 0 0 50.00%
6p 8 1 7 0 0 0 12.50%
7p 27 10 14 3 0 0 42.59%
8p 44 18 25 1 0 0 42.05%
9p 177 80 97 0 0 0 45.20%

Over the length
Moves Games Win Loss Jigo None Unkn Scoring
100-150 22 17 5 0 0 0 77.27%
150-200 63 31 32 0 0 0 49.21%
200-250 77 25 48 4 0 0 35.06%
250-300 88 33 55 0 0 0 37.50%
300-350 8 4 4 0 0 0 50.00%

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