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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. DeFirmian vs P Nikolic |
| 0-1 | 52 |
1986 |
Reykjavik (Iceland) | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 2. DeFirmian vs T Taghian |
 | 1-0 | 57 |
1994 |
It (open) | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 3. DeFirmian vs J D Tisdall |
| ½-½ | 40 |
1995 |
San Francisco (Pan Pacific), | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 4. DeFirmian vs Piket |
| ½-½ | 56 |
1996 |
Memorial Donner (cat.16) | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 5. DeFirmian vs J Aagaard |
| ½-½ | 43 |
2004 |
12th Sigeman & Co Chess Tournament | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
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Secrets of Opening Surprises
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