Czech, Boguslav
Current rating: 1525
Record: 6-6
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 515 | Brodzak, Michal (1503) | Won 2-0 | +191483 |
| 2sealed | 535 | Lehnert, Heiko (1566) | Lost 0-2 | -171466 |
| 3sealed | 680 | Kuta, Viktor (1501) | Won 2-1 | +191485 |
| 4sealed | 698 | Vokas, Petr (1520) | Won 2-0 | +191504 |
| 5sealed | 654 | Sadeghpour, Johan (1738) | Won 2-1 | +221526 |
| 6sealed | 597 | Saito, Tomoharu (1949) | Won 2-0 | +251551 |
| 7sealed | 534 | Bakke, Geir (1778) | Lost 0-2 | -141537 |
| 8sealed | 574 | Gregoir, Christophe (1876) | Lost 0-2 | -121525 |
| average opponent: 1679record: 5-3 | new rating: 1525 | |||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 121 | Aksenchik, Vitaly (1500) | Lost 0-2 | -181482 |
| 2standard | 133 | Curumtally, Zayed (1483) | Lost 1-2 | -181464 |
| 3standard | 163 | Herdzina, Wojciech (1464) | Lost 0-2 | -181446 |
| 4standard | 200 | Chojnacki, Jakub (1447) | Won 2-0 | +181464 |
| average opponent: 1474record: 1-3 | new rating: 1464 | |||