| page 1 of 2; games 1-25 of 29 |
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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Johansson vs DeFirmian |
| ½-½ | 44 |
1982 |
London (England) | A33 English, Symmetrical |
| 2. Xu Jun vs DeFirmian |
 | 1-0 | 41 |
1984 |
Olympiad | A33 English, Symmetrical |
| 3. D Gurevich vs DeFirmian |
| 0-1 | 60 |
1989 |
Long | A33 English, Symmetrical |
| 4. V McCambridge vs DeFirmian |
| 0-1 | 40 |
1989 |
New York (USA) | A33 English, Symmetrical |
| 5. Kiril Georgiev vs DeFirmian |
| ½-½ | 50 |
1989 |
Reggio | A33 English, Symmetrical |
| 6. J Benjamin vs DeFirmian |
| ½-½ | 35 |
1989 |
Santiago | A33 English, Symmetrical |
| 7. Lautier vs DeFirmian |
| ½-½ | 19 |
1990 |
Biel (Switzerland) | A33 English, Symmetrical |
| 8. Miles vs DeFirmian |
| ½-½ | 47 |
1990 |
It (cat.14) | A33 English, Symmetrical |
| 9. Speelman vs DeFirmian |
| 1-0 | 52 |
1990 |
World Cup ( select ) | A33 English, Symmetrical |
| 10. Gulko vs DeFirmian |
| ½-½ | 9 |
1990 |
Cup World (select) | A33 English, Symmetrical |
| 11. G Zaitshik vs DeFirmian |
| 1-0 | 47 |
1990 |
It (open) | A33 English, Symmetrical |
| 12. E Ubilava vs DeFirmian |
| ½-½ | 41 |
1990 |
It (open) | A33 English, Symmetrical |
| 13. Saidy vs DeFirmian |
| 1-0 | 34 |
1990 |
It (open) | A33 English, Symmetrical |
| 14. H Olafsson vs DeFirmian |
| ½-½ | 37 |
1990 |
Reykjavik | A33 English, Symmetrical |
| 15. Speelman vs DeFirmian |
| 1-0 | 52 |
1990 |
Moscow | A33 English, Symmetrical |
| 16. Gulko vs DeFirmian |
| 1-0 | 46 |
1994 |
PCA Qualifier (active), VI | A33 English, Symmetrical |
| 17. D Odom vs DeFirmian |
| 0-1 | 23 |
1994 |
It (open) | A33 English, Symmetrical |
| 18. Miles vs DeFirmian |
| ½-½ | 31 |
1994 |
Linares MEX | A33 English, Symmetrical |
| 19. Panno vs DeFirmian |
| ½-½ | 63 |
1995 |
It (cat.11) | A33 English, Symmetrical |
| 20. T Engqvist vs DeFirmian |
| 1-0 | 34 |
1995 |
Gausdal (Norway) | A33 English, Symmetrical |
| 21. D Gurevich vs DeFirmian |
| ½-½ | 38 |
1995 |
Ch USA | A33 English, Symmetrical |
| 22. Adianto vs DeFirmian |
| ½-½ | 19 |
1996 |
Amsterdam | A33 English, Symmetrical |
| 23. Salov vs DeFirmian |
| 0-1 | 50 |
1996 |
Amsterdam | A33 English, Symmetrical |
| 24. Smejkal vs DeFirmian |
| ½-½ | 16 |
1999 |
Bundesliga 9900 | A33 English, Symmetrical |
| 25. D Hergott vs DeFirmian |
| ½-½ | 50 |
1999 |
Koltanowski Team Match | A33 English, Symmetrical |
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| page 1 of 2; games 1-25 of 29 |
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