Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. M Kaposztas vs A Kosten |
| 0-1 | 49 | 1987 | Berlin op | E32 Nimzo-Indian, Classical |
2. Shabalov vs A Kosten |
| ½-½ | 55 | 1988 | GMA-JAT Open | E32 Nimzo-Indian, Classical |
3. Korchnoi vs A Kosten |
| 1-0 | 31 | 1989 | Hastings 1988/89 | E32 Nimzo-Indian, Classical |
4. J Horvath vs A Kosten |
| 1-0 | 49 | 1989 | Noviki-A | E32 Nimzo-Indian, Classical |
5. Forintos vs A Kosten |
| ½-½ | 14 | 1989 | Forli Open | E32 Nimzo-Indian, Classical |
6. Gavrikov vs A Kosten |
| 1-0 | 46 | 1989 | GMA Baleares Open | E32 Nimzo-Indian, Classical |
7. H Sonntag vs A Kosten |
| ½-½ | 28 | 1990 | Toulouse Open | E32 Nimzo-Indian, Classical |
8. J Tisdall vs A Kosten |
| ½-½ | 16 | 1990 | London WFW | E32 Nimzo-Indian, Classical |
9. C Crouch vs A Kosten |
| ½-½ | 35 | 1991 | Hastings Challengers 1991/92 | E32 Nimzo-Indian, Classical |
10. R Medancic vs A Kosten |
| 0-1 | 36 | 1992 | Amantea op | E32 Nimzo-Indian, Classical |
11. M Mitkov vs A Kosten |
| ½-½ | 18 | 1993 | Lyon op | E32 Nimzo-Indian, Classical |
12. E Relange vs A Kosten |
| ½-½ | 11 | 1994 | Paris | E32 Nimzo-Indian, Classical |
13. B Kelly vs A Kosten |
| ½-½ | 29 | 1998 | FRA-chT | E32 Nimzo-Indian, Classical |
14. V Lazarev vs A Kosten |
| ½-½ | 10 | 1998 | FRA-chT | E32 Nimzo-Indian, Classical |
15. E Arlandi vs A Kosten |
| ½-½ | 27 | 1998 | Escaldes Zonal | E32 Nimzo-Indian, Classical |
16. O Touzane vs A Kosten |
| 0-1 | 51 | 1999 | FRA-chT | E32 Nimzo-Indian, Classical |
17. O Foisor vs A Kosten |
| 1-0 | 40 | 2000 | St Affrique op 8th | E32 Nimzo-Indian, Classical |
18. M Nicoara vs A Kosten |
| 0-1 | 76 | 2001 | FRA-chT | E32 Nimzo-Indian, Classical |
19. A Baburin vs A Kosten |
| ½-½ | 17 | 2003 | AUT-chT 0203 | E32 Nimzo-Indian, Classical |
20. M Gurevich vs A Kosten |
| 1-0 | 40 | 2003 | FRA-chT | E32 Nimzo-Indian, Classical |
21. N A Legky vs A Kosten |
| ½-½ | 15 | 2003 | Villeurbanne Masters 2nd | E32 Nimzo-Indian, Classical |
22. M Barth Stanford vs A Kosten |
| ½-½ | 27 | 2009 | 4NCL 2008-9 | E32 Nimzo-Indian, Classical |
23. K Terrieux vs A Kosten |
| ½-½ | 18 | 2009 | ch-FRA National B | E32 Nimzo-Indian, Classical |
24. K Terrieux vs A Kosten |
| 1-0 | 39 | 2012 | French Team Championship | E32 Nimzo-Indian, Classical |
25. C Debray vs A Kosten |
| 0-1 | 55 | 2013 | French Team Championship | E32 Nimzo-Indian, Classical |