Ishii, Kazuyuki
Current rating: 1571
Record: 10-6
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Fujii, Yuuki (1464) | Won 2-0 | +181515 |
| 2sealed | 54 | Kikuchi, Kanji (1520) | Lost 1-2 | -181497 |
| 3sealed | 65 | Sato, Yoshihiro (1446) | Lost 0-2 | -191478 |
| 4sealed | 147 | Tanabe, Kazuya (1268) | Won 2-0 | +141492 |
| 5sealed | 90 | Sekizawa, Takayuki (1480) | Won 2-1 | +181510 |
| 6sealed | 66 | Senba, Kotaro (1602) | Won 2-1 | +191529 |
| 7sealed | 72 | Suzuki, Yuuji (1677) | Won 2-0 | +211550 |
| 8sealed | 29 | Okada, Wataru (1691) | Won 2-0 | +211571 |
| average opponent: 1518record: 6-2 | new rating: 1571 | |||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 133 | Yoshizawa, Hiromi (1329) | Lost 0-2 | -211479 |
| 2block | 169 | Tanaka, Yasunori (1481) | Lost 0-1 | -181461 |
| 3block | 186 | Miyazaki, Kazuyuki (1493) | Won 1-0 | +191480 |
| 4block | 190 | Sasagawa, Kentaro (1481) | Won 2-1 | +181498 |
| 5block | 140 | Ogihara, Toshiki (1412) | Won 2-0 | +161514 |
| 6block | 94 | Nomura, Eiji (1692) | Lost 1-2 | -151499 |
| 7block | 114 | Nishizawa, Yasuhide (1500) | Won 2-1 | +181517 |
| 8block | 101 | Hanawa, Atsushi (1400) | Lost 0-2 | -201497 |
| average opponent: 1474record: 4-4 | new rating: 1497 | |||