| page 1 of 1; games 1-25 of 25 |
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| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. de Firmian vs Marjanovic |
 | 1-0 | 54 | 1983 | Vrnjacka Banja | B90 Sicilian, Najdorf |
| 2. de Firmian vs Gavrikov |
| 0-1 | 71 | 1985 | Tunis Interzonal | B90 Sicilian, Najdorf |
| 3. de Firmian vs Ivanchuk |
 | 0-1 | 34 | 1989 | World Team Championship | B90 Sicilian, Najdorf |
| 4. de Firmian vs L Busquets |
| 1-0 | 28 | 1989 | American Open | B90 Sicilian, Najdorf |
| 5. de Firmian vs E Tate |
| 1-0 | 51 | 1993 | 21st World Open | B90 Sicilian, Najdorf |
| 6. de Firmian vs G Thorhallsson |
| 1-0 | 25 | 1994 | Reykjavik Open | B90 Sicilian, Najdorf |
| 7. de Firmian vs Browne |
| ½-½ | 41 | 1995 | Pan Pacific International | B90 Sicilian, Najdorf |
| 8. de Firmian vs Kasparov |
| ½-½ | 58 | 1995 | New York PCA-Intel GP | B90 Sicilian, Najdorf |
| 9. de Firmian vs Van Wely |
| 0-1 | 43 | 1995 | Buenos Aires Najdorf | B90 Sicilian, Najdorf |
| 10. de Firmian vs Ftacnik |
| ½-½ | 14 | 1995 | Rubinstein Memorial 32nd | B90 Sicilian, Najdorf |
| 11. de Firmian vs Ehlvest |
| ½-½ | 66 | 1995 | Rubinstein Memorial 32nd | B90 Sicilian, Najdorf |
| 12. de Firmian vs P Wolff |
| ½-½ | 23 | 1995 | United States Championship | B90 Sicilian, Najdorf |
| 13. de Firmian vs J Sunye Neto |
| 1-0 | 42 | 1996 | CITS New York | B90 Sicilian, Najdorf |
| 14. de Firmian vs Van Wely |
| 0-1 | 49 | 1996 | Donner Memorial | B90 Sicilian, Najdorf |
| 15. de Firmian vs Ivanchuk |
| ½-½ | 23 | 1996 | Donner Memorial | B90 Sicilian, Najdorf |
| 16. de Firmian vs R Ruck |
| 1-0 | 40 | 2000 | Istanbul Olympiad | B90 Sicilian, Najdorf |
| 17. de Firmian vs J Svahn |
| 1-0 | 34 | 2003 | Rilton Cup 2003/04 | B90 Sicilian, Najdorf |
| 18. de Firmian vs J Eriksson |
| 1-0 | 25 | 2003 | Rilton Cup 2003/04 | B90 Sicilian, Najdorf |
| 19. de Firmian vs F Berkes |
| ½-½ | 14 | 2004 | Rilton Cup 2003/04 | B90 Sicilian, Najdorf |
| 20. de Firmian vs Carlsen |
| ½-½ | 49 | 2004 | Politiken Cup | B90 Sicilian, Najdorf |
| 21. de Firmian vs J Aagaard |
| 1-0 | 31 | 2006 | Politiken Cup | B90 Sicilian, Najdorf |
| 22. de Firmian vs H Ziska |
| 1-0 | 40 | 2007 | Politiken Cup | B90 Sicilian, Najdorf |
| 23. de Firmian vs K Kulaots |
| ½-½ | 29 | 2009 | Gjovik Open-A 2008/09 | B90 Sicilian, Najdorf |
| 24. de Firmian vs D Rensch |
| 1-0 | 30 | 2009 | 37th World Open | B90 Sicilian, Najdorf |
| 25. de Firmian vs L H P Sousa |
| 1-0 | 43 | 2011 | Oslo Chess International | B90 Sicilian, Najdorf |
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| page 1 of 1; games 1-25 of 25 |
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Kibitzing
