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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K Spraggett vs DeFirmian |
 | 0-1 | 37 |
1976 |
Can. Open, Toronto | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 2. Kudrin vs DeFirmian |
| 1-0 | 38 |
1983 |
Ch USA | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 3. A Ivanov vs DeFirmian |
| ½-½ | 58 |
1989 |
Long | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 4. A Ivanov vs DeFirmian |
| ½-½ | 44 |
1989 |
It (open) | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 5. Kudrin vs DeFirmian |
| ½-½ | 60 |
1993 |
New York op (09) | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 6. Kudrin vs DeFirmian |
| 0-1 | 53 |
1993 |
World Op, Philadelphia | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 7. A Ivanov vs DeFirmian |
| ½-½ | 20 |
1995 |
It (a) | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 8. A Olsson vs DeFirmian |
| 1-0 | 44 |
2002 |
Stockholm International | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
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Secrets of Opening Surprises
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