Kato Keiko
Kato Keiko (加藤啓子) has a rating of 1343, ranked 380 of 452 in professional play. Their highest rating so far is 1613 (March 20, 2006).
- 2026 record
- 8-9
- Record since 1927
- 125-181
- Win rate
- .408
The rating is calculated from published game results. It does not include any adjustment for playing Black.
Professional ratingsFind a player
Rating history — professional
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Rating history in the women's tournaments pool (for reference)
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Ratings in other pools
Ratings for general play and for women's tournaments are calculated independently and do not affect each other.
- Women's tournaments: 1684 (#17)
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| September 10, 2026 | Mori ChisakiWomen's Kisei Preliminary A as White | Win | ↑20 |
| September 3, 2026 | Kuwamoto ShinpeiSGW Cup Chuyo Preliminary Round 1 Colors unknown | Loss | ↓8 |
| June 25, 2026 | Mukai ChiakiWomen's Honinbo Round 3 as Black | Loss | ↓4 |
| May 28, 2026 | Okuda AyaWomen's Honinbo Round 2 as Black | Win | ↑23 |
| May 21, 2026 | Yokota HinanoOza Colors unknown | Loss | ↓8 |
| May 11, 2026 | Katsura AtsushiHoninbo Colors unknown | Loss | ↓11 |
| April 30, 2026 | Shigekawa AkashiGosei Colors unknown | Loss | ↓5 |
| April 27, 2026 | Morita MichihiroKisei First Tournament Preliminary Semifinal Colors unknown | Loss | ↓4 |
| April 20, 2026 | Nishiyama ShizukaWomen's Honinbo Round 1 as White | Win | ↑14 |
| March 26, 2026 | Kanda EiKisei First Tournament Preliminary Quarterfinal Colors unknown | Win | ↑22 |
| March 12, 2026 | Kikuchi YoshioGosei Colors unknown | Win | ↑8 |
| March 5, 2026 | Sakai MakiTengen Colors unknown | Loss | ↓9 |
| February 26, 2026 | Shoji KazukoKisei First Tournament Preliminary Round 2 Colors unknown | Win | ↑2 |
| February 19, 2026 | Kudo NorioJudan Colors unknown | Loss | ↓16 |
| February 5, 2026 | Michael RedmondTeikei Cup Legend as Black | Loss | ↓6 |
| January 22, 2026 | Shibusawa MachikoKisei First Tournament Preliminary Round 1 Colors unknown | Win | ↑3 |
| January 15, 2026 | Nakajima MiekoWomen's Honinbo Preliminary Final as Black | Win | ↑8 |
| December 25, 2025 | Kobayashi IzumiTeikei Cup Women's Legend Round 3 as White | Loss | ↓11 |
| December 22, 2025 | O RisseiMeijin Preliminary C as Black | Loss | ↓1 |
| December 18, 2025 | Jo BunenSenko Cup Women's Strongest Player Preliminary as White | Loss | ↓12 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Chinen Kaori | 10-10.500 | 4-7 | 3-2 |
| Mukai Chiaki | 6-13.316 | 3-4 | 2-6 |
| Okuda Aya | 11-8.579 | 4-1 | 2-2 |
| Kobayashi Izumi | 10-8.556 | 2-3 | 3-2 |
| Aoki Kikuyo | 7-10.412 | 3-4 | 2-3 |
| Osawa Narumi | 9-6.600 | 2-0 | 4-2 |
| Umezawa Yukari | 8-7.533 | 3-3 | 2-3 |
| Xie Yimin | 6-7.462 | 2-2 | 3-5 |
| Okada Yumiko | 10-1.909 | 2-0 | 2-0 |
| Koyama Terumi | 8-3.727 | 1-2 | 1-0 |
| Suzuki Ayumi | 4-7.364 | 3-5 | 1-1 |
| Yashiro Kumiko | 5-6.455 | 1-2 | 1-3 |
| Nakazawa Ayako | 8-2.800 | 2-0 | 0-0 |
| Izawa Akino | 6-2.750 | 0-0 | 2-0 |
| Konishi Kazuko | 7-1.875 | 1-0 | 4-1 |
| Nakajima Mieko | 6-2.750 | 1-2 | 0-0 |
| Ishii Akane | 4-3.571 | 2-1 | 2-2 |
| Yoshida Mika | 3-4.429 | 1-1 | 2-3 |
| Cho Chien | 5-1.833 | 1-0 | 1-0 |
| Shoji Kazuko | 6-01.000 | 0-0 | 0-0 |
| Nyu Eiko | 1-5.167 | 0-0 | 0-2 |
| Kono Takashi | 1-5.167 | 0-0 | 0-0 |
| Kato Tomoko | 2-4.333 | 0-1 | 1-0 |
| Ohashi Hirofumi | 2-4.333 | 1-0 | 0-0 |
| Fujisawa Rina | 1-5.167 | 0-1 | 1-2 |
| Nakayama Kaoru | 5-01.000 | 0-0 | 0-0 |
| Mitsunaga Junzo | 1-4.200 | 0-0 | 0-1 |
| Takanashi Seiken | 1-4.200 | 0-0 | 0-0 |
| Ogawa Tomoko | 4-1.800 | 1-0 | 0-0 |
| Inori Yoko | 2-3.400 | 1-0 | 1-3 |
| Tanimiya Ayako | 4-1.800 | 0-0 | 0-0 |
Record by year
Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.
| Year | Record | Win rate |
|---|---|---|
| 2026 | 8-9 | .471 |
| 2025 | 16-16 | .500 |
| 2024 | 5-14 | .263 |
| 2023 | 4-15 | .210 |
| 2022 | 10-14 | .417 |
| 2021 | 12-16 | .429 |
| 2020 | 7-11 | .389 |
| 2019 | 12-15 | .444 |
| 2018 | 20-16 | .556 |
| 2017 | 19-15 | .559 |
| 2016 | 13-19 | .406 |
| 2015 | 16-16 | .500 |
| 2014 | 12-13 | .480 |
| 2013 | 11-8 | .579 |
| 2012 | 14-13 | .518 |
| 2011 | 10-4 | .714 |
| 2010 | 1-1 | .500 |
| 2009 | 6-16 | .273 |
| 2008 | 14-11 | .560 |
| 2007 | 15-8 | .652 |
| 2006 | 13-12 | .520 |
| 2005 | 26-11 | .703 |
| 2004 | 8-13 | .381 |
| 2003 | 16-17 | .485 |
| 2002 | 14-7 | .667 |
| 2001 | 3-6 | .333 |
| 2000 | 4-1 | .800 |
| 1999 | 3-1 | .750 |
| Total | 125-181 | .408 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).