Sakamaki Kosuke
Sakamaki Kosuke (酒牧幸典) has a rating of 1465.
Retired. The rating shown is the rating at retirement.
Sakamaki Kosuke酒牧幸典Nihon Ki-in
Rating1465
Rank—
1-year change—
Peak rating—
Last 4LossWinLossLoss1-3
- 1981 record
- 0-1
- Record since 1927
- 1-3
- Win rate
- .250
Rating at retirement (not included in the rating list)
The rating is calculated from published game results. It does not include any adjustment for playing Black.
Professional ratingsFind a player
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| April 8, 1981 | O MeienKisei 3 dan Section Final as White | Loss | ↓15 |
| March 14, 1963 | Iwamoto KaoruFormer Meijin 3rd Preliminary as Black | Loss | ↓16 |
| January 24, 1963 | Izumo EijiFormer Meijin 2nd Preliminary as Black | Win | ↑13 |
| December 7, 1960 | Watanabe ReijiHoninbo 1st Preliminary as Black | Loss | ↓16 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Iwamoto Kaoru | 0-1.000 | 0-1 | 0-0 |
| Watanabe Reiji | 0-1.000 | 0-1 | 0-0 |
| O Meien | 0-1.000 | 0-0 | 0-1 |
| Izumo Eiji | 1-01.000 | 1-0 | 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 |
|---|---|---|
| 1981 | 0-1 | .000 |
| 1963 | 1-1 | .500 |
| 1960 | 0-1 | .000 |
| Total | 1-3 | .250 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).