| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. L Day vs L Piasetski |
| 1-0 | 39 |
1969 |
Tournoi de L'est | E61 King's Indian |
| 2. Z Vranesic vs L Piasetski |
| 1-0 | 58 |
1969 |
CAN-ch | E80 King's Indian, Samisch Variation |
| 3. L Piasetski vs Larsen |
 | 0-1 | 29 |
1970 |
CAN op | A04 Reti Opening |
| 4. I Hambleton vs L Piasetski |
| 1-0 | 47 |
1971 |
9th Canadian Open | A26 English |
| 5. L Day vs L Piasetski |
| 1-0 | 44 |
1971 |
Ontario Open | A56 Benoni Defense |
| 6. Larsen vs L Piasetski |
| 1-0 | 47 |
1972 |
USA op | A02 Bird's Opening |
| 7. L Piasetski vs L Day |
| 0-1 | 35 |
1972 |
14, Toronto CAN ch | A27 English, Three Knights System |
| 8. L Piasetski vs L Day |
| 0-1 | 57 |
1975 |
Quebec Open | A46 Queen's Pawn Game |
| 9. L Piasetski vs Nunn |
| 0-1 | 34 |
1976 |
Haifa olm | D34 Queen's Gambit Declined, Tarrasch |
| 10. L Piasetski vs V Kovacevic |
| 0-1 | 23 |
1977 |
Karlovac | A85 Dutch, with c4 & Nc3 |
| 11. Nunn vs L Piasetski |
| 1-0 | 38 |
1978 |
Buenos Aires olm | C04 French, Tarrasch, Guimard Main line |
| 12. L Piasetski vs K Spraggett |
| 0-1 | 40 |
1978 |
Ch. Canada, Toronto | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 13. Nunn vs L Piasetski |
| 1-0 | 37 |
1978 |
England 25/420 | B33 Sicilian |
| 14. L Piasetski vs K Spraggett |
| 0-1 | 59 |
1979 |
Ch. Invit. Montreal | A33 English, Symmetrical |
| 15. Igor Ivanov vs L Piasetski |
| 1-0 | 65 |
1981 |
Montreal zt ,MCL 03 | A41 Queen's Pawn Game (with ...d6) |
| 16. L Piasetski vs Suttles |
| 0-1 | 58 |
1981 |
Vancouver 15-minute | B08 Pirc, Classical |
| 17. L Piasetski vs L Day |
| 0-1 | 59 |
1981 |
09, Montreal | A43 Old Benoni |
| 18. L Piasetski vs Larsen |
| 0-1 | 47 |
1984 |
New York op | A42 Modern Defense, Averbakh System |
| 19. J Benjamin vs L Piasetski |
| 1-0 | 74 |
1988 |
03, Thessaloniki olm | B46 Sicilian, Taimanov Variation |
| 20. L Piasetski vs Nickoloff |
| 0-1 | 31 |
1989 |
CAN-ch zt | A34 English, Symmetrical |
| 21. L Piasetski vs K Spraggett |
| 0-1 | 63 |
1989 |
Ch. Canada, Windsor | E62 King's Indian, Fianchetto |
| 22. Kamsky vs L Piasetski |
| 1-0 | 43 |
1990 |
Manila | B32 Sicilian |
| 23. L Piasetski vs J Benjamin |
| 0-1 | 50 |
1990 |
Mississauga (Canada) | A10 English |
| 24. L Piasetski vs G Cabrilo |
| 0-1 | 41 |
1990 |
Manila izt | E91 King's Indian |
| 25. Vaganian vs L Piasetski |
| 1-0 | 18 |
1990 |
Toronto | A04 Reti Opening |
