Sakai Michiharu
Sakai Michiharu (酒井通温) has a rating of 1544.
Retired. The rating shown is the rating at retirement.
Sakai Michiharu9 dan酒井通温Nihon Ki-in Chubu
Rating1544
Rank—
1-year change—
Peak rating—
Last 10WinWinLossLossWinLossLossWinLossLoss133-109(1 by default)
- 1983 record
- 0-2
- Record since 1927
- 133-109
- Win rate
- .550
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 |
|---|---|---|---|
| January 27, 1983 | Nakamura HidehitoKisei 8 dan Section as Black | Loss | ↓15 |
| January 20, 1983 | Hiroe KatsuhikoOkan Round 2 as White | Loss | ↓20 |
| December 16, 1982 | Hayase HiroshiKisei 8 dan Section as Black | Win | ↑15 |
| June 10, 1982 | Hane YasumasaOkan Round 3 as White | Loss | ↓7 |
| April 29, 1982 | Otake HideoTengen Round 1 as Black | Loss | ↓5 |
| March 4, 1982 | Akedo KazumiOkan Round 2 as White | Win | ↑10 |
| January 28, 1982 | Shimamura ToshihiroJudan 2nd Preliminary as Black | Loss | ↓11 |
| July 6, 1978 | Iwata TatsuakiOkan Round 3 as White | Loss | ↓16 |
| June 24, 1978 | Wu SongshengJapan-China Go Exchange Round 7 as White | Win | — |
| May 25, 1978 | Inagaki KoichiOkan Round 2 as White | Win | ↑12 |
| April 6, 1978 | Kobayashi KoichiTengen as Black | Loss | ↓4 |
| February 2, 1978 | Sakata EioTengen 2nd Preliminary as White | Win | ↑25 |
| February 24, 1977 | Kamimura HaruoJudan 2nd Preliminary as White | Loss | ↓18 |
| April 17, 1976 | Chen ZudeJapan-China Go Exchange Round 6 as White | Win | — |
| January 29, 1976 | Yoshida YoichiGosei Preliminary as Black | Loss | ↓15 |
| December 18, 1975 | Hayase HiroshiJudan 2nd Preliminary as White | Loss | ↓19 |
| September 25, 1975 | Morishima KaoruTengen 2nd Preliminary as Black | Loss | ↓20 |
| August 28, 1975 | Hiroe KatsuhikoOza 2nd Preliminary as White | Loss | ↓27 |
| August 14, 1975 | Iwata TatsuakiHoninbo 3rd Preliminary as Black | Loss | ↓16 |
| July 31, 1975 | Baba ShigeruOza 2nd Preliminary as Black | Win | ↑9 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Hane Yasumasa | 4-7.364 | 3-3 | 1-4 |
| Segawa Yoshio | 2-6.250 | 1-3 | 1-3 |
| Tsujii Ryotaro | 7-1.875 | 3-0 | 4-1 |
| Hashimoto Yoshimi | 4-4.500 | 3-0 | 1-4 |
| Kusaka Kaneo | 7-1.875 | 3-0 | 4-1 |
| Ishii Kunio | 4-4.500 | 1-2 | 3-2 |
| Tsuchida Masamitsu | 4-3.571 | 3-1 | 1-2 |
| Iwata Tatsuaki | 1-6.143 | 1-3 | 0-3 |
| Hayase Hiroshi | 4-3.571 | 3-0 | 1-3 |
| Morishima Kaoru | 4-2.667 | 3-1 | 1-1 |
| Nabeshima Ichiro | 6-01.000 | 5-0 | 1-0 |
| Yoshida Yoichi | 5-1.833 | 3-1 | 2-0 |
| Sometani Kazuo | 4-2.667 | 0-1 | 4-1 |
| Kudo Norio | 0-5.000 | 0-2 | 0-3 |
| Yamabe Toshiro | 2-3.400 | 1-2 | 1-1 |
| Hisai Keishi | 2-3.400 | 1-0 | 1-3 |
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 |
|---|---|---|
| 1983 | 0-2 | .000 |
| 1982 | 2-3 | .400 |
| 1978 | 3-2 | .600 |
| 1977 | 0-1 | .000 |
| 1976 | 1-1 | .500 |
| 1975 | 4-6 | .400 |
| 1974 | 10-8 | .556 |
| 1973 | 16-6 | .727 |
| 1972 | 10-2 | .833 |
| 1971 | 7-7 | .500 |
| 1970 | 4-8 | .333 |
| 1969 | 10-6 | .625 |
| 1968 | 10-4 | .714 |
| 1967 | 6-7 | .462 |
| 1966 | 10-7 | .588 |
| 1965 | 12-6 | .667 |
| 1964 | 3-6 | .333 |
| 1963 | 4-9 | .308 |
| 1962 | 5-4 | .556 |
| 1961 | 9-4 | .692 |
| 1960 | 3-5 | .375 |
| 1957 | 0-1 | .000 |
| 1956 | 0-1 | .000 |
| 1954 | 0-1 | .000 |
| 1953 | 1-1 | .500 |
| 1952 | 2-0 | 1.000 |
| 1950 | 0-1 | .000 |
| 1948 | 1-0 | 1.000 |
| Total | 133-109 | .550 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).