Marques, Helder
Current rating: 1449
Record: 6-9
| Grand Prix Bilbao 2005 (extended) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 50 | Clark, Ali (1500) | Lost 0-2 | -181466 |
| 2extended | 187 | Soria, Juan (1397) | Lost 1-2 | -191447 |
| 3extended | 199 | Hernandez, Arturo (1464) | Won 2-0 | +181465 |
| 4extended | 191 | Grancha Marin, Beatriz (1482) | Lost 0-2 | -171448 |
| 5extended | 206 | Opi, Eloy (1463) | Lost 1-2 | -181430 |
| 6extended | 193 | Martin, Mikel (1463) | Won 2-1 | +191449 |
| average opponent: 1462record: 2-4 | new rating: 1449 | |||
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Azevedo, Alexandre (1571) | Lost 0-2 | -171483 |
| 2sealed | 209 | Porto, Manuel (1482) | Lost 0-1 | -181465 |
| 3sealed | 240 | Santos, Ricardo 5879 (1463) | Lost 0-2 | -181447 |
| 4sealed | 268 | Gaspar, Tiago (1447) | Won 2-0 | +181465 |
| 5sealed | 217 | Almeida, Manuel (1463) | Won 2-0 | +181483 |
| 6sealed | 167 | Moreira, Lourdes (1482) | Lost 0-2 | -181465 |
| 7sealed | 159 | Borga, Marc (1465) | Won 2-1 | +181483 |
| 8sealed | 132 | Ramos, Luis (1482) | Won 2-0 | +181501 |
| 9sealed | 98 | Carcelen, Raul (1556) | Lost 0-2 | -171484 |
| average opponent: 1490record: 4-5 | new rating: 1484 | |||