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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Korchnoi vs A Kosten |
| 1-0 | 31 |
1988 |
Hastings A2 ,CBM 11 | E32 Nimzo-Indian, Classical |
| 2. Shabalov vs A Kosten |
| ½-½ | 55 |
1988 |
Belgrade GMA-op | E32 Nimzo-Indian, Classical |
| 3. Bronstein vs A Kosten |
| ½-½ | 37 |
1989 |
London (England) | E41 Nimzo-Indian |
| 4. Speelman vs A Kosten |
| ½-½ | 40 |
1991 |
Ch England | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 5. M Ezat vs A Kosten |
| 0-1 | 80 |
2003 |
1st Misr Closed, Cairo EGY | E20 Nimzo-Indian |
| 6. C Marzolo vs A Kosten |
| 1-0 | 63 |
2005 |
French Championship | E21 Nimzo-Indian, Three Knights |
| 7. J Ivanov vs A Kosten |
| ½-½ | 8 |
2006 |
Marseille Chess Festival | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 8. C Marzolo vs A Kosten |
| ½-½ | 13 |
2006 |
Marseille Chess Festival | E21 Nimzo-Indian, Three Knights |
| 9. C Ward vs A Kosten |
| ½-½ | 19 |
2007 |
British Championship | E21 Nimzo-Indian, Three Knights |
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Secrets of Opening Surprises
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