| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Y Masserey vs J Ares |
| 1-0 | 17 | 1990 | Geneva Open | C34 King's Gambit Accepted |
| 2. Y Masserey vs J M Lauridsen |
| 1-0 | 43 | 1991 | Open Danish Junior Championship | C10 French |
| 3. Y Masserey vs J Aagaard |
| 0-1 | 34 | 1991 | Open Danish Junior Championship | B76 Sicilian, Dragon, Yugoslav Attack |
| 4. Y Masserey vs J Murey |
| 0-1 | 32 | 1991 | Zuerich op | B56 Sicilian |
| 5. M Nouro vs Y Masserey |
| 1-0 | 35 | 1991 | Open Danish Junior Championship | C05 French, Tarrasch |
| 6. B Tabernig vs Y Masserey |
| 1-0 | 42 | 1991 | Open Danish Junior Championship | E21 Nimzo-Indian, Three Knights |
| 7. Delchev vs Y Masserey |
| 1-0 | 40 | 1991 | Open Danish Junior Championship | E06 Catalan, Closed, 5.Nf3 |
| 8. A Achang vs Y Masserey |
| ½-½ | 15 | 1991 | Open Danish Junior Championship | E10 Queen's Pawn Game |
| 9. Y Masserey vs S Chloupek |
| 1-0 | 20 | 1991 | Open Danish Junior Championship | B46 Sicilian, Taimanov Variation |
| 10. Y Masserey vs S Zjukin |
| 0-1 | 21 | 1991 | Open Danish Junior Championship | C91 Ruy Lopez, Closed |
| 11. Y Masserey vs K Kulaots |
| 1-0 | 33 | 1991 | Open Danish Junior Championship | B45 Sicilian, Taimanov |
| 12. B Stanojevic vs Y Masserey |
| 1-0 | 53 | 1991 | Geneva Open | E06 Catalan, Closed, 5.Nf3 |
| 13. G Markotic vs Y Masserey |
| ½-½ | 40 | 1991 | Geneva Open | E29 Nimzo-Indian, Samisch |
| 14. Y Masserey vs L Janjghava |
| 0-1 | 34 | 1991 | Geneva Open | B62 Sicilian, Richter-Rauzer |
| 15. O Berrig vs Y Masserey |
| 1-0 | 28 | 1991 | Geneva Open | C00 French Defense |
| 16. Y Masserey vs L Chiong |
| 0-1 | 33 | 1991 | Geneva Open | B90 Sicilian, Najdorf |
| 17. Y Masserey vs P Di Minico |
| 1-0 | 52 | 1991 | Geneva Open | B07 Pirc |
| 18. Y Masserey vs Delchev |
| 0-1 | 34 | 1991 | World Junior Championship | B93 Sicilian, Najdorf, 6.f4 |
| 19. K Le Quang vs Y Masserey |
| ½-½ | 27 | 1991 | World Junior Championship | C02 French, Advance |
| 20. Y Masserey vs M Ceteras |
| ½-½ | 40 | 1991 | World Junior Championship | B32 Sicilian |
| 21. Y Masserey vs A Cela |
 | 0-1 | 30 | 1991 | World Junior Championship | C33 King's Gambit Accepted |
| 22. Y Masserey vs C Buckley |
| 1-0 | 24 | 1991 | World Junior Championship | C12 French, McCutcheon |
| 23. J Sequera vs Y Masserey |
| 1-0 | 34 | 1991 | World Junior Championship | C04 French, Tarrasch, Guimard Main line |
| 24. D Elliott vs Y Masserey |
| ½-½ | 25 | 1991 | World Junior Championship | C05 French, Tarrasch |
| 25. P H Nielsen vs Y Masserey |
| 1-0 | 25 | 1991 | World Junior Championship | E31 Nimzo-Indian, Leningrad, Main line |
Kibitzing
