| page 1 of 1; 20 games |
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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. DeFirmian vs Marjanovic |
| 1-0 | 54 |
1983 |
Vrnjachka Banja (Yugoslavia) | B90 Sicilian, Najdorf |
| 2. DeFirmian vs Gavrikov |
| 0-1 | 71 |
1985 |
Tunis | B90 Sicilian, Najdorf |
| 3. DeFirmian vs A Salazar |
| 0-1 | 29 |
1986 |
Olympiad | B90 Sicilian, Najdorf |
| 4. DeFirmian vs L Busquets |
 | 1-0 | 28 |
1989 |
New York (USA) | B90 Sicilian, Najdorf |
| 5. DeFirmian vs Ivanchuk |
 | 0-1 | 34 |
1989 |
Ch World (team) | B90 Sicilian, Najdorf |
| 6. DeFirmian vs E Tate |
| 1-0 | 51 |
1993 |
World Op A, Philadelphia | B90 Sicilian, Najdorf |
| 7. DeFirmian vs G Thorhallsson |
| 1-0 | 25 |
1994 |
Reykjavik open | B90 Sicilian, Najdorf |
| 8. DeFirmian vs Ehlvest |
| ½-½ | 66 |
1995 |
It (cat.14) | B90 Sicilian, Najdorf |
| 9. DeFirmian vs Wolff |
| ½-½ | 23 |
1995 |
Ch USA | B90 Sicilian, Najdorf |
| 10. DeFirmian vs Ftacnik |
| ½-½ | 14 |
1995 |
It (cat.14) | B90 Sicilian, Najdorf |
| 11. DeFirmian vs Browne |
| ½-½ | 41 |
1995 |
San Francisco (Pan Pacific), | B90 Sicilian, Najdorf |
| 12. DeFirmian vs Van Wely |
| 0-1 | 43 |
1995 |
It (cat.11) | B90 Sicilian, Najdorf |
| 13. DeFirmian vs Kasparov |
| ½-½ | 58 |
1995 |
Intel Chess Grand Prix (active) | B90 Sicilian, Najdorf |
| 14. DeFirmian vs Van Wely |
| 0-1 | 49 |
1996 |
Memorial Donner (cat.16) | B90 Sicilian, Najdorf |
| 15. DeFirmian vs J S Neto |
| 1-0 | 42 |
1996 |
It (cat.13) | B90 Sicilian, Najdorf |
| 16. DeFirmian vs Ivanchuk |
| ½-½ | 23 |
1996 |
Memorial Donner (cat.16) | B90 Sicilian, Najdorf |
| 17. DeFirmian vs R Ruck |
| 1-0 | 40 |
2000 |
34th Olympiad | B90 Sicilian, Najdorf |
| 18. DeFirmian vs J Aagaard |
| 1-0 | 31 |
2006 |
Politiken Cup | B90 Sicilian, Najdorf |
| 19. DeFirmian vs H Ziska |
 | 1-0 | 40 |
2007 |
Politiken Cup | B90 Sicilian, Najdorf |
| 20. DeFirmian vs D Rensch |
 | 1-0 | 30 |
2009 |
World Open | B90 Sicilian, Najdorf |
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| page 1 of 1; 20 games |
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Secrets of Opening Surprises
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