Kupias, Petri
Current rating: 1500
Record: 4-4
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Westergren, Fredrik (1500) | Lost 0-2 | -181482 |
| 2sealed | 167 | Tyrvainen, Marko (1482) | Won 2-1 | +181500 |
| 3sealed | 149 | Tuomi, Antero (1481) | Won 2-0 | +181518 |
| 4sealed | 129 | Myllykyla, Ville (1524) | Lost 0-2 | -181500 |
| 5sealed | 157 | Weydahl, Anders (1567) | Lost 0-2 | -171483 |
| 6sealed | 134 | Marttila, Lauri (1481) | Won 2-1 | +181501 |
| 7sealed | 118 | Gourevitch, Alexandre (1474) | Lost 0-2 | -191482 |
| 8sealed | 104 | Rundelin, Jarkko (1482) | Won 2-0 | +181500 |
| average opponent: 1499record: 4-4 | new rating: 1500 | |||