Pirttiniemi, Seppo
Current rating: 1504
Record: 3-3
| Grand Prix Helsinki 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Lamsa, Esko (1500) | Won 2-0 | +181518 |
| 2sealed | 74 | Pekkonen, Tatu (1516) | Won 2-0 | +181536 |
| 3sealed | 49 | Goertzen, Simon (1779) | Lost 1-2 | -141522 |
| 4sealed | 124 | Puustinen, Eetu (1501) | Lost 0-2 | -181504 |
| 5sealed | 152 | Kirjokangas, Mikko (1537) | Lost 0-2 | -171487 |
| 6sealed | 144 | Kilpelainen, Tomi (1481) | Won 2-0 | +171504 |
| average opponent: 1552record: 3-3 | new rating: 1504 | |||