Katsuma Shiro
Katsuma Shiro (勝間史朗) has a rating of 1395, ranked 347 of 452 in professional play. Their highest rating so far is 1455 (April 16, 2015).
Katsuma Shiro7 dan勝間史朗Kansai Ki-in
Rating1395
Rank347
1-year change↓13
Peak rating1455
Last 10WinWinLossLossLossLossLossLossLossLoss9-27
- 2026 record
- 0-1
- Record since 1927
- 9-27
- Win rate
- .250
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.
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| February 12, 2026 | Osawa KenroKisei First Tournament Preliminary Round 1 Colors unknown | Loss | ↓13 |
| September 10, 2025 | Kunisawa HirotoTengen Preliminary A as White | Loss | ↓4 |
| March 19, 2025 | Otani KensukeMeijin Preliminary C as Black | Loss | ↓13 |
| January 8, 2025 | Kiyonari TetsuyaKisei First Tournament Preliminary Round 1 Colors unknown | Loss | ↓4 |
| September 11, 2024 | Hong SeokuiTengen Preliminary A as White | Loss | ↓5 |
| February 29, 2024 | Goto ShungoKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓9 |
| September 6, 2023 | Murakawa DaisukeTengen Preliminary A as White | Loss | ↓1 |
| February 9, 2023 | Muramatsu HirokiKisei First Tournament Preliminary Quarterfinal Colors unknown | Loss | ↓3 |
| January 26, 2023 | Kawada KoheiKisei First Tournament Preliminary Round 2 Colors unknown | Win | ↑18 |
| December 14, 2022 | Nagasaki YujiKisei First Tournament Preliminary Round 1 Colors unknown | Win | ↑13 |
| January 19, 2022 | Inoue NaokiKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓10 |
| January 27, 2021 | Imabun TaroKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓12 |
| December 18, 2019 | Kan MinuKisei First Tournament Preliminary Quarterfinal Colors unknown | Loss | ↓5 |
| November 28, 2019 | Bian WenkaiKisei First Tournament Preliminary Round 2 Colors unknown | Win | ↑22 |
| November 13, 2019 | Maruyama ToyojiKisei First Tournament Preliminary Round 1 Colors unknown | Win | ↑14 |
| February 20, 2019 | Seto TaikiHoninbo Preliminary A as Black | Loss | ↓1 |
| December 5, 2018 | Hon AkiyoshiKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓5 |
| November 7, 2018 | Mizuno HiromiKisei First Tournament Preliminary Round 1 Colors unknown | Win | ↑16 |
| December 7, 2017 | Yata NaokiKisei First Tournament Preliminary Round 1 Colors unknown | Loss | ↓10 |
| October 26, 2017 | Araki IsseiKisei First Tournament Preliminary Round 1 Colors unknown | Loss | ↓10 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Yata Naoki | 0-2.000 | 0-0 | 0-0 |
| Maruyama Toyoji | 2-01.000 | 0-0 | 1-0 |
| Yamashita Keigo | 0-2.000 | 0-2 | 0-0 |
| Rin Shien | 0-1.000 | 0-0 | 0-1 |
| Shimojima Yohei | 0-1.000 | 0-0 | 0-0 |
| Hong Seokui | 0-1.000 | 0-0 | 0-1 |
| Mizuno Hiromi | 1-01.000 | 0-0 | 0-0 |
| Imamura Toshiya | 0-1.000 | 0-0 | 0-1 |
| Iguchi Toyohide | 1-01.000 | 0-0 | 1-0 |
| Yamada Shiho | 0-1.000 | 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 | 0-1 | .000 |
| 2025 | 0-3 | .000 |
| 2024 | 0-2 | .000 |
| 2023 | 1-2 | .333 |
| 2022 | 1-1 | .500 |
| 2021 | 0-1 | .000 |
| 2019 | 2-2 | .500 |
| 2018 | 1-1 | .500 |
| 2017 | 1-3 | .250 |
| 2016 | 0-2 | .000 |
| 2015 | 0-2 | .000 |
| 2005 | 0-1 | .000 |
| 2004 | 0-2 | .000 |
| 2003 | 0-1 | .000 |
| 2000 | 1-0 | 1.000 |
| 1999 | 1-1 | .500 |
| 1998 | 0-1 | .000 |
| 1994 | 1-1 | .500 |
| Total | 9-27 | .250 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).