Kosakada Koji
Kosakada Koji (小坂田幸次) has a rating of 1446.
Retired. The rating shown is the rating at retirement.
Kosakada Koji9 dan小坂田幸次Kansai Ki-in
Rating1446
Rank—
1-year change—
Peak rating—
Last 9LossLossLossLossWinLossLossLossLoss1-8
- 1988 record
- 0-1
- Record since 1927
- 1-8
- Win rate
- .111
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 |
|---|---|---|---|
| December 12, 1988 | Endo TakahiroFujitsu Cup Japan Preliminary as White | Loss | — |
| November 5, 1981 | Ito YojiShinjin-O Round 1 as White | Loss | ↓14 |
| December 4, 1980 | Awaji ShuzoKisei 7 dan Section as Black | Loss | ↓6 |
| March 4, 1976 | Kuwata YasuakiKisei 7 dan Section as Black | Loss | ↓17 |
| February 5, 1976 | Ota SeidoKisei 7 dan Section as White | Win | ↑18 |
| January 1, 1976 | Hashimoto UtaroKansai Ki-in First Place Tournament as White | Loss | ↓8 |
| July 17, 1969 | Hisai KeishiFormer Meijin Final Preliminary as Black | Loss | ↓10 |
| April 17, 1968 | Hashimoto UtaroKansai Ki-in First Place Tournament Round 1 as Black | Loss | ↓8 |
| July 21, 1966 | Sugiuchi MasaoHoninbo 3rd Preliminary as White | Loss | ↓10 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Hashimoto Utaro | 0-2.000 | 0-1 | 0-1 |
| Ota Seido | 1-01.000 | 0-0 | 1-0 |
| Awaji Shuzo | 0-1.000 | 0-1 | 0-0 |
| Kuwata Yasuaki | 0-1.000 | 0-1 | 0-0 |
| Ito Yoji | 0-1.000 | 0-0 | 0-1 |
| Hisai Keishi | 0-1.000 | 0-1 | 0-0 |
| Endo Takahiro | 0-1.000 | 0-0 | 0-1 |
| Sugiuchi Masao | 0-1.000 | 0-0 | 0-1 |
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 |
|---|---|---|
| 1988 | 0-1 | .000 |
| 1981 | 0-1 | .000 |
| 1980 | 0-1 | .000 |
| 1976 | 1-2 | .333 |
| 1969 | 0-1 | .000 |
| 1968 | 0-1 | .000 |
| 1966 | 0-1 | .000 |
| Total | 1-8 | .111 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).