| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. P Sinkovics vs M Leski |
| 1-0 | 34 | 1981 | Biel MTO Open | D07 Queen's Gambit Declined, Chigorin Defense |
| 27. M Leski vs L Pliester |
| 1-0 | 41 | 1981 | Biel MTO Open | E67 King's Indian, Fianchetto |
| 28. L Lengyel vs M Leski |
| 1-0 | 44 | 1981 | Biel MTO Open | B08 Pirc, Classical |
| 29. M Leski vs Hodgson |
| 1-0 | 31 | 1982 | 5th Manchester Benedictine Open | A40 Queen's Pawn Game |
| 30. Kudrin vs M Leski |
| 1-0 | 30 | 1982 | 5th Manchester Benedictine Open | B07 Pirc |
| 31. G Andruet vs M Leski |
| 1-0 | 39 | 1983 | Paris op | D06 Queen's Gambit Declined |
| 32. M Leski vs M Santo-Roman |
| 1-0 | 34 | 1986 | Geneva Open | E06 Catalan, Closed, 5.Nf3 |
| 33. M Leski vs A Boog |
| 1-0 | 19 | 1986 | Geneva Open | A04 Reti Opening |
| 34. G Barbero vs M Leski |
| ½-½ | 32 | 1986 | Geneva Open | D07 Queen's Gambit Declined, Chigorin Defense |
| 35. M Leski vs G Miralles |
| 0-1 | 34 | 1987 | Montpellier | A05 Reti Opening |
| 36. M Leski vs Z Klaric |
| ½-½ | 24 | 1987 | Montpellier | A06 Reti Opening |
| 37. G Andruet vs M Leski |
| 1-0 | 39 | 1987 | Montpellier | D07 Queen's Gambit Declined, Chigorin Defense |
| 38. Browne vs M Leski |
| 1-0 | 25 | 1987 | Pan Pacific International | D34 Queen's Gambit Declined, Tarrasch |
| 39. M Leski vs Adianto |
| 0-1 | 55 | 1987 | Pan Pacific International | A07 King's Indian Attack |
| 40. D Verduga vs M Leski |
| 0-1 | 30 | 1987 | Pan Pacific International | D34 Queen's Gambit Declined, Tarrasch |
| 41. G Rey vs M Leski |
| 1-0 | 41 | 1987 | Pan Pacific International | D07 Queen's Gambit Declined, Chigorin Defense |
| 42. S Djuric vs M Leski |
| ½-½ | 60 | 1987 | Pan Pacific International | D32 Queen's Gambit Declined, Tarrasch |
| 43. M Rohde vs M Leski |
| ½-½ | 34 | 1987 | Pan Pacific International | B08 Pirc, Classical |
| 44. K Spraggett vs M Leski |
| ½-½ | 27 | 1987 | Pan Pacific International | D34 Queen's Gambit Declined, Tarrasch |
| 45. M Leski vs L Christiansen |
| ½-½ | 46 | 1987 | Pan Pacific International | A13 English |
| 46. M Leski vs D Gurevich |
| 1-0 | 32 | 1987 | Pan Pacific International | A05 Reti Opening |
| 47. M Leski vs Miles |
 | 1-0 | 36 | 1987 | Pan Pacific International | A41 Queen's Pawn Game (with ...d6) |
| 48. M Leski vs de Firmian |
| ½-½ | 56 | 1987 | Pan Pacific International | A37 English, Symmetrical |
| 49. M Leski vs C Lakdawala |
| 1-0 | 37 | 1989 | San Mateo Action | A07 King's Indian Attack |
| 50. M Leski vs J Hoggatt |
| 1-0 | 37 | 1989 | San Mateo Action | D17 Queen's Gambit Declined Slav |
Kibitzing
