| page 1 of 3; games 1-25 of 72 |
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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. S Bjarnason vs DeFirmian |
| 0-1 | 56 |
1973 |
Bunadarbanka (Iceland) | A37 English, Symmetrical |
| 2. Z Krnic vs DeFirmian |
| 1-0 | 35 |
1981 |
Nis (Yugoslavia) | A30 English, Symmetrical |
| 3. J Thinnsen vs DeFirmian |
| 0-1 | 38 |
1981 |
Lone Pine (USA) | A30 English, Symmetrical |
| 4. H Pfleger vs DeFirmian |
| ½-½ | 66 |
1981 |
Lone Pine (USA) | A30 English, Symmetrical |
| 5. L Gutman vs DeFirmian |
| 1-0 | 33 |
1981 |
Lone | A30 English, Symmetrical |
| 6. J Johansson vs DeFirmian |
| ½-½ | 44 |
1982 |
London (England) | A33 English, Symmetrical |
| 7. Adorjan vs DeFirmian |
| ½-½ | 14 |
1983 |
It (cat.10) | A30 English, Symmetrical |
| 8. M Pein vs DeFirmian |
| 1-0 | 54 |
1984 |
Lloyds Bank op 08th | A37 English, Symmetrical |
| 9. Shamkovich vs DeFirmian |
| ½-½ | 39 |
1984 |
Reykjavik (Iceland) | A34 English, Symmetrical |
| 10. H Olafsson vs DeFirmian |
| 0-1 | 28 |
1984 |
Reykjavik | A30 English, Symmetrical |
| 11. Shamkovich vs DeFirmian |
| ½-½ | 39 |
1984 |
Bunadarbanka | A34 English, Symmetrical |
| 12. Xu Jun vs DeFirmian |
 | 1-0 | 41 |
1984 |
Olympiad | A33 English, Symmetrical |
| 13. C Hansen vs DeFirmian |
| 1-0 | 59 |
1985 |
Copenhagen (Denmark) | A31 English, Symmetrical, Benoni Formation |
| 14. L Karlsson vs DeFirmian |
| 1-0 | 44 |
1985 |
It (cat.11) | A37 English, Symmetrical |
| 15. D Cramling vs DeFirmian |
| ½-½ | 51 |
1986 |
Biel (Switzerland) | A30 English, Symmetrical |
| 16. Gulko vs DeFirmian |
| ½-½ | 35 |
1987 |
Estes Park | A30 English, Symmetrical |
| 17. D Verduga vs DeFirmian |
| ½-½ | 19 |
1987 |
Ch USA | A30 English, Symmetrical |
| 18. Shamkovich vs DeFirmian |
| ½-½ | 39 |
1987 |
Reykjavik (Iceland) | A30 English, Symmetrical |
| 19. Larsen vs DeFirmian |
| ½-½ | 60 |
1988 |
New York Open (02) | A30 English, Symmetrical |
| 20. K Shirazi vs DeFirmian |
| 0-1 | 26 |
1989 |
San Mateo (USA) | A36 English |
| 21. Miles vs DeFirmian |
| ½-½ | 72 |
1989 |
It (open) | A36 English |
| 22. Ribli vs DeFirmian |
| ½-½ | 14 |
1989 |
Reggio Emilia8990 | A37 English, Symmetrical |
| 23. Kiril Georgiev vs DeFirmian |
| ½-½ | 50 |
1989 |
Reggio | A33 English, Symmetrical |
| 24. V McCambridge vs DeFirmian |
| 0-1 | 40 |
1989 |
New York (USA) | A33 English, Symmetrical |
| 25. M Steinbacher vs DeFirmian |
| 0-1 | 41 |
1989 |
Lugano (Switzerland) | A30 English, Symmetrical |
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| page 1 of 3; games 1-25 of 72 |
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