| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Hellmayr vs Y Berthelot |
| 1-0 | 42 | 1974 | World Junior Championship qual | A07 King's Indian Attack |
| 2. P Ammann vs Y Berthelot |
 | 1-0 | 12 | 1974 | World Junior Championship Final-B | A36 English |
| 3. B De Jonghe vs Y Berthelot |
| ½-½ | 20 | 1974 | World Junior Championship qual | B56 Sicilian |
| 4. V Hrivnak vs Y Berthelot |
| 0-1 | 40 | 1988 | Cappelle Open | B22 Sicilian, Alapin |
| 5. Y Berthelot vs G Flear |
| ½-½ | 51 | 1988 | Pau Open | C30 King's Gambit Declined |
| 6. Y Berthelot vs E Bricard |
| 1-0 | 35 | 1988 | Pau Open | C30 King's Gambit Declined |
| 7. Y Berthelot vs K Steczkowski |
| ½-½ | 36 | 1989 | FRA-chT | C35 King's Gambit Accepted, Cunningham |
| 8. Y Berthelot vs S Buecker |
| 1-0 | 62 | 1989 | Eger op | C30 King's Gambit Declined |
| 9. J Lechtynsky vs Y Berthelot |
| 0-1 | 88 | 1989 | Cappelle op | D91 Grunfeld, 5.Bg5 |
| 10. Y Berthelot vs A Mikhalchishin |
| ½-½ | 17 | 1989 | It ( shv. ), Capelle la Grande | C34 King's Gambit Accepted |
| 11. D Anic vs Y Berthelot |
| 1-0 | 36 | 1990 | Lyon op | A49 King's Indian, Fianchetto without c4 |
| 12. Y Berthelot vs M Sharif |
| ½-½ | 44 | 1991 | Cannes/Lyon | C30 King's Gambit Declined |
| 13. T Gouret vs Y Berthelot |
| 0-1 | 17 | 1991 | FRA-chT | A16 English |
| 14. Y Berthelot vs S Lamoureux |
| 1-0 | 22 | 1991 | Torcy Open-A | C34 King's Gambit Accepted |
| 15. Y Berthelot vs B Thebault |
| 1-0 | 20 | 1991 | Torcy Open-A | C34 King's Gambit Accepted |
| 16. A Sokolov vs Y Berthelot |
| 1-0 | 22 | 1991 | Torcy Open-A | B31 Sicilian, Rossolimo Variation |
| 17. J M Calvo Sanchez vs Y Berthelot |
| 1-0 | 26 | 1991 | Torcy Open-A | E63 King's Indian, Fianchetto, Panno Variation |
| 18. D Barlov vs Y Berthelot |
| 1-0 | 38 | 1991 | Torcy Open-A | E92 King's Indian |
| 19. O Bouverot vs Y Berthelot |
| ½-½ | 27 | 1993 | Paris-ch op | E70 King's Indian |
| 20. H Tirard vs Y Berthelot |
| 1-0 | 39 | 1993 | FRA-ch Fide | A01 Nimzovich-Larsen Attack |
| 21. Y Berthelot vs M Lupu |
| 0-1 | 36 | 1995 | Cannes Martinez Open | B32 Sicilian |
| 22. L Vialaret vs Y Berthelot |
| 0-1 | 48 | 1995 | Cannes Martinez Open | D00 Queen's Pawn Game |
| 23. Y Berthelot vs S Midoux |
| 0-1 | 47 | 1995 | Cannes Martinez Open | B01 Scandinavian |
| 24. Y Berthelot vs A Rotstein |
| 0-1 | 53 | 1995 | Cannes Martinez Open | B42 Sicilian, Kan |
| 25. E Birens vs Y Berthelot |
| 0-1 | 51 | 1995 | Cannes Martinez Open | A69 Benoni, Four Pawns Attack, Main line |
Kibitzing
