| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. M Valvo vs Burkett |
 | 1-0 | 12 |
1963 |
Indiana | B40 Sicilian |
| 2. Velimirovic vs M Valvo |
 | 1-0 | 39 |
1964 |
WchT U26 11th fin-A | B57 Sicilian |
| 3. M Valvo vs L Day |
| 0-1 | 59 |
1968 |
Atlantic op | B43 Sicilian, Kan, 5.Nc3 |
| 4. Plaskett vs M Valvo |
| 0-1 | 76 |
1979 |
Marshall op | B04 Alekhine's Defense, Modern |
| 5. M Valvo vs Shamkovich |
| 0-1 | 40 |
1979 |
USA | B42 Sicilian, Kan |
| 6. M Valvo vs J Benjamin |
| 0-1 | 40 |
1980 |
04, Manhattan CC | E91 King's Indian |
| 7. M Valvo vs Dzindzichashvili |
| ½-½ | 16 |
1980 |
06, Manhattan CC | B42 Sicilian, Kan |
| 8. Alburt vs M Valvo |
| 1-0 | 31 |
1980 |
09, Manhattan CC | A57 Benko Gambit |
| 9. M Valvo vs J Peters |
| 1-0 | 58 |
1980 |
New York, NY USA | C81 Ruy Lopez, Open, Howell Attack |
| 10. Shamkovich vs M Valvo |
| ½-½ | 27 |
1985 |
It (open) | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 11. M Valvo vs Kudrin |
| ½-½ | 25 |
1987 |
It (open) | B46 Sicilian, Taimanov Variation |
| 12. M Valvo vs Ivkov |
| ½-½ | 28 |
1987 |
New York op | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 13. M Valvo vs Silman |
| 1-0 | 25 |
1987 |
It New York (USA) | B14 Caro-Kann, Panov-Botvinnik Attack |
| 14. Deep Thought vs M Valvo |
 | 0-1 | 48 |
1988 |
corr one move/every 3 days | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 15. M Valvo vs Alburt |
| 1-0 | 24 |
1988 |
World Open | B03 Alekhine's Defense |
| 16. M Valvo vs Deep Thought |
| 1-0 | 48 |
1988 |
corr one move/every 3 days | B03 Alekhine's Defense |
| 17. M Valvo vs Browne |
| 0-1 | 12 |
1989 |
San Mateo (USA) | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 18. Deep Thought vs M Valvo |
 | 0-1 | 48 |
1989 |
cr | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 19. Popovych vs M Valvo |
| 1-0 | 33 |
1990 |
New York op 8 | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 20. K Burger vs M Valvo |
| ½-½ | 50 |
1990 |
It (open) | D34 Queen's Gambit Declined, Tarrasch |
| 21. M Valvo vs J Benjamin |
| 0-1 | 35 |
1990 |
06, Philadelphia op | C45 Scotch Game |
| 22. M Valvo vs V A Ivanov |
| 1-0 | 11 |
1991 |
WT/M/GT/297 | C33 King's Gambit Accepted |
| 23. D Tobor vs M Valvo |
| 0-1 | 24 |
1991 |
WT/M/GT/297 | C02 French, Advance |
| 24. M Valvo vs G Windhausen |
| ½-½ | 21 |
1991 |
WT/M/GT/297 | B09 Pirc, Austrian Attack |
| 25. V M Pedersen vs M Valvo |
| ½-½ | 43 |
1991 |
WT/M/GT/297 | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |