Kolby, Per
Current rating: 1560
Record: 16-14
| Grand Prix Gothenburg 2003 (MRD limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 101 | Levinson, Oskar (1500) | Won 1-0 | +171578 |
| 2sealed | 87 | Gorling, Anders (1535) | Won 2-0 | +171595 |
| 3sealed | 27 | Kristensen, Dennis (1633) | Won 2-1 | +191614 |
| 4sealed | 34 | Karsten, Frank (1747) | Lost 0-2 | -161598 |
| 5sealed | 78 | Mosavi, Yaser (1537) | Lost 1-2 | -191579 |
| 6sealed | 94 | Rikberg, Svante (1516) | Lost 1-2 | -191560 |
| top | average opponent: 1578record: 3-3 | new rating: 1560 | ||
| Grand Prix Genoa 2003 (Onslaught block) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 18 | Russo, Enrico (1561) | Lost 0-1 | -191579 |
| 3block | 156 | Lysak, Zdenek (1628) | Lost 0-1 | -171562 |
| 4block | 250 | Klings, Rudiger (1571) | Won 2-1 | +191581 |
| 5block | 172 | Balducci, Francesco (1501) | Lost 1-2 | -201561 |
| top | average opponent: 1565record: 1-3 | new rating: 1561 | ||
| Grand Prix Oslo 2001 (Invasion block) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 34 | Pischinger, Felix (1521) | Won 2-0 | +191500 |
| 2block | 37 | Norris, Pete (1568) | Won 2-1 | +191519 |
| 3block | 5 | Martin, Quentin (1691) | Won 2-0 | +211540 |
| 4block | 5 | Wehner, Lasse (1537) | Lost 1-2 | -181522 |
| 5block | 41 | Rikberg, Svante (1503) | Won 2-1 | +181540 |
| 6block | 29 | Toyomasu, Tor (1552) | Lost 0-2 | -181522 |
| 7block | 55 | Herzog, Nicolai (1631) | Won 2-1 | +201542 |
| 8block | 18 | Manaranche, Stephane (1595) | Won 2-1 | +191561 |
| 9block | 19 | Bingen, Sturla (1787) | Lost 0-2 | -141547 |
| 10block | 22 | Haglund, Simon (1507) | Won 2-0 | +181565 |
| 11block | 17 | Karlsson, Morgan (1774) | Lost 0-2 | -151550 |
| 12block | 20 | Jocumsen, Bjorn (1740) | Won 2-0 | +221572 |
| 13block | 12 | Budde, Kai (2074) | Won 2-0 | +261598 |
| top | average opponent: 1652record: 9-4 | new rating: 1598 | ||
| Grand Prix Oslo 1999 (ULG sealed) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Eggen, Oddbjorn (1500) | Lost 1-2 | -181482 |
| 2sealed | 94 | Nilsen, Mikael (1482) | Won 2-1 | +181500 |
| 3sealed | 118 | Ungstad, Andreas (1500) | Won 2-0 | +181518 |
| 4sealed | 94 | Yeh, Gottlieb (1482) | Lost 1-2 | -191499 |
| 5sealed | 114 | Morten Gregersen, Pal (1500) | Won 2-0 | +181517 |
| 6sealed | 64 | Hammer, Tommy (1518) | Lost 0-2 | -181499 |
| 7sealed | 86 | Grythe, Simen (1500) | Lost 0-2 | -181481 |
| top | average opponent: 1497record: 3-4 | new rating: 1481 | ||