| page 1 of 1; 4 games |
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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Portisch vs K Langeweg |
| 1-0 | 24 |
1969 |
Amsterdam | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 2. Gligoric vs K Langeweg |
| ½-½ | 22 |
1971 |
Wijk aan Zee Hoogovens A, NED | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 3. Timman vs K Langeweg |
| ½-½ | 47 |
1972 |
7, Wijk Aan Zee | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 4. Balashov vs K Langeweg |
| 1-0 | 41 |
1973 |
Wijk aan Zee | E54 Nimzo-Indian, 4.e3, Gligoric System |
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Secrets of Opening Surprises
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