伊藤博文七段
四段昇段後
公式棋戦
| 年度 | 対局 | 勝数 | 敗数 | 勝率 | 先勝 | 先敗 | 先勝率 | 後勝 | 後敗 | 後勝率 | 持 | 千 |
|---|
| 1984 | 23 | 13 | 10 | 0.5652 | 6 | 4 | 0.600 | 6 | 6 | 0.500 | 0 | 0 |
| 1985 | 39 | 21 | 18 | 0.5385 | 9 | 9 | 0.500 | 10 | 9 | 0.526 | 0 | 1 |
| 1986 | 33 | 12 | 21 | 0.3636 | 7 | 9 | 0.438 | 5 | 12 | 0.294 | 0 | 0 |
| 1987 | 34 | 16 | 18 | 0.4706 | 8 | 8 | 0.500 | 8 | 10 | 0.444 | 0 | 0 |
| 1988 | 34 | 13 | 21 | 0.3824 | 8 | 10 | 0.444 | 5 | 11 | 0.313 | 0 | 0 |
| 1989 | 34 | 17 | 17 | 0.5000 | 6 | 8 | 0.429 | 11 | 9 | 0.550 | 0 | 0 |
| 1990 | 30 | 7 | 23 | 0.2333 | 5 | 8 | 0.385 | 2 | 15 | 0.118 | 0 | 0 |
| 1991 | 28 | 9 | 19 | 0.3214 | 7 | 9 | 0.438 | 2 | 10 | 0.167 | 0 | 1 |
| 1992 | 27 | 12 | 15 | 0.4444 | 4 | 7 | 0.364 | 8 | 8 | 0.500 | 0 | 0 |
| 1993 | 28 | 15 | 13 | 0.5357 | 8 | 6 | 0.571 | 7 | 7 | 0.500 | 0 | 0 |
| 1994 | 26 | 11 | 15 | 0.4231 | 8 | 4 | 0.667 | 3 | 11 | 0.214 | 0 | 0 |
| 1995 | 30 | 12 | 18 | 0.4000 | 7 | 8 | 0.467 | 4 | 10 | 0.286 | 0 | 0 |
| 1996 | 22 | 3 | 19 | 0.1364 | 2 | 5 | 0.286 | 1 | 14 | 0.067 | 0 | 0 |
| 1997 | 29 | 14 | 15 | 0.4828 | 8 | 6 | 0.571 | 6 | 9 | 0.400 | 0 | 0 |
| 1998 | 30 | 11 | 19 | 0.3667 | 8 | 12 | 0.400 | 3 | 7 | 0.300 | 0 | 0 |
| 1999 | 18 | 6 | 12 | 0.3333 | 3 | 6 | 0.333 | 3 | 6 | 0.333 | 0 | 0 |
| 2000 | 28 | 17 | 11 | 0.6071 | 8 | 4 | 0.667 | 9 | 7 | 0.563 | 0 | 0 |
| 2001 | 17 | 7 | 10 | 0.4118 | 2 | 4 | 0.333 | 5 | 6 | 0.455 | 0 | 0 |
| 2002 | 27 | 11 | 16 | 0.4074 | 8 | 8 | 0.500 | 3 | 8 | 0.273 | 0 | 0 |
| 2003 | 29 | 9 | 20 | 0.3103 | 6 | 10 | 0.375 | 2 | 10 | 0.167 | 0 | 0 |
| 2004 | 15 | 4 | 11 | 0.2667 | 2 | 5 | 0.286 | 2 | 6 | 0.250 | 0 | 0 |
| 2005 | 18 | 9 | 9 | 0.5000 | 2 | 6 | 0.250 | 7 | 3 | 0.700 | 0 | 0 |
| 2006 | 12 | 0 | 12 | 0.0000 | 0 | 9 | 0.000 | 0 | 3 | 0.000 | 0 | 0 |
| 2007 | 13 | 3 | 10 | 0.2308 | 0 | 5 | 0.000 | 3 | 5 | 0.375 | 0 | 0 |
| 2008 | 17 | 7 | 10 | 0.4118 | 4 | 6 | 0.400 | 3 | 4 | 0.429 | 0 | 0 |
| 2009 | 17 | 7 | 10 | 0.4118 | 4 | 5 | 0.444 | 3 | 5 | 0.375 | 0 | 0 |
| 2010 | 13 | 3 | 10 | 0.2308 | 2 | 5 | 0.286 | 1 | 5 | 0.167 | 0 | 0 |
| 2011 | 16 | 6 | 10 | 0.3750 | 2 | 2 | 0.500 | 4 | 8 | 0.333 | 0 | 0 |
| 2012 | 12 | 2 | 10 | 0.1667 | 2 | 4 | 0.333 | 0 | 6 | 0.000 | 0 | 0 |
| 2013 | 17 | 6 | 11 | 0.3529 | 3 | 6 | 0.333 | 3 | 5 | 0.375 | 0 | 0 |
| 2014 | 17 | 9 | 8 | 0.5294 | 4 | 5 | 0.444 | 5 | 3 | 0.625 | 0 | 0 |
| 2015 | 19 | 7 | 12 | 0.3684 | 1 | 8 | 0.111 | 6 | 4 | 0.600 | 0 | 0 |
| 2016 | 14 | 3 | 11 | 0.2143 | 2 | 5 | 0.286 | 1 | 6 | 0.143 | 0 | 0 |
| 2017 | 16 | 5 | 11 | 0.3125 | 3 | 5 | 0.375 | 2 | 6 | 0.250 | 0 | 0 |
| 2018 | 15 | 4 | 11 | 0.2667 | 4 | 5 | 0.444 | 0 | 6 | 0.000 | 0 | 0 |
| 2019 | 13 | 2 | 11 | 0.1538 | 1 | 6 | 0.143 | 1 | 5 | 0.167 | 0 | 0 |
| 2020 | 1 | 0 | 1 | 0.0000 | 0 | 0 | | 0 | 1 | 0.000 | 0 | 0 |
| 合計 | 811 | 313 | 498 | 0.3859 | 164 | 232 | 0.414 | 144 | 266 | 0.351 | 0 | 2 |
非公式棋戦
| 年度 | 対局 | 勝数 | 敗数 | 勝率 | 先勝 | 先敗 | 先勝率 | 後勝 | 後敗 | 後勝率 | 持 | 千 |
|---|
| 1991 | 1 | 0 | 1 | 0.0000 | 0 | 0 | | 0 | 1 | 0.000 | 0 | 0 |
| 1998 | 1 | 0 | 1 | 0.0000 | 0 | 0 | | 0 | 1 | 0.000 | 0 | 0 |
| 合計 | 2 | 0 | 2 | 0.0000 | 0 | 0 | | 0 | 2 | 0.000 | 0 | 0 |
四段昇段前
公式棋戦
| 年度 | 対局 | 勝数 | 敗数 | 勝率 | 先勝 | 先敗 | 先勝率 | 後勝 | 後敗 | 後勝率 | 持 | 千 |
|---|
| 1979 | 1 | 1 | 0 | 1.0000 | 1 | 0 | 1.000 | 0 | 0 | | 0 | 0 |
| 合計 | 1 | 1 | 0 | 1.0000 | 1 | 0 | 1.000 | 0 | 0 | | 0 | 0 |