| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. L Gachon vs D Kljako |
| 1-0 | 20 | 1988 | Cannes Open | B09 Pirc, Austrian Attack |
| 2. L Gachon vs J Rukavina |
| ½-½ | 41 | 1988 | Cannes Open | B32 Sicilian |
| 3. L Gachon vs M Illescas |
| 0-1 | 38 | 1988 | Montpellier | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 4. M Santo-Roman vs L Gachon |
| 1-0 | 38 | 1988 | Montpellier | B32 Sicilian |
| 5. L Gachon vs K Bischoff |
| 0-1 | 24 | 1988 | Montpellier | B42 Sicilian, Kan |
| 6. L Gachon vs Z Klaric |
| 1-0 | 19 | 1988 | Montpellier | C55 Two Knights Defense |
| 7. R Simic vs L Gachon |
| ½-½ | 50 | 1988 | Montpellier | A30 English, Symmetrical |
| 8. L Gachon vs G Miralles |
| ½-½ | 45 | 1988 | Montpellier | C42 Petrov Defense |
| 9. E Bricard vs L Gachon |
| 1-0 | 42 | 1988 | Montpellier | D05 Queen's Pawn Game |
| 10. R Weill vs L Gachon |
| 1-0 | 43 | 1988 | Montpellier | A04 Reti Opening |
| 11. L Gachon vs S Vincent |
| 0-1 | 43 | 1988 | Montpellier | B33 Sicilian |
| 12. D Sahovic vs L Gachon |
| 0-1 | 48 | 1988 | Montpellier | A46 Queen's Pawn Game |
| 13. L Gachon vs V Vaisman |
| 0-1 | 30 | 1988 | Montpellier | B43 Sicilian, Kan, 5.Nc3 |
| 14. L Gachon vs D Pira |
| 0-1 | 37 | 1988 | Montpellier | B32 Sicilian |
| 15. D Anic vs L Gachon |
| 1-0 | 44 | 1988 | Montpellier | D34 Queen's Gambit Declined, Tarrasch |
| 16. G Andruet vs L Gachon |
| 1-0 | 69 | 1988 | Montpellier | E11 Bogo-Indian Defense |
| 17. L Gachon vs M Hebden |
| 0-1 | 25 | 1988 | Montpellier | A48 King's Indian |
| 18. M Illescas vs L Gachon |
| 1-0 | 28 | 1996 | Barcelona op rap | E67 King's Indian, Fianchetto |
| 19. I Nataf vs L Gachon |
| 0-1 | 48 | 1997 | Montpellier op-A | B70 Sicilian, Dragon Variation |
| 20. L Gachon vs D Komarov |
| 0-1 | 22 | 1997 | FRA-chT 9697 fin | B30 Sicilian |
| 21. D Komarov vs L Gachon |
| 1-0 | 72 | 1998 | FRA-chT | E92 King's Indian |
| 22. L Gachon vs A Kosten |
| 0-1 | 36 | 1998 | FRA-chT | B57 Sicilian |
| 23. G Miralles vs L Gachon |
| 1-0 | 28 | 2001 | FRA-chT | B50 Sicilian |
| 24. L Gachon vs P Brochet |
| 0-1 | 67 | 2001 | FRA-chT | B23 Sicilian, Closed |
| 25. L Gachon vs S Peric |
| 0-1 | 43 | 2001 | FRA-chT | C02 French, Advance |
Kibitzing
