| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A E Hanreck vs M Pein |
| 0-1 | 30 | 1977 | 1st Lloyds Bank Masters Open | D90 Grunfeld |
| 2. M Pein vs Hodgson |
| 0-1 | 31 | 1977 | 1st Lloyds Bank Masters Open | A14 English |
| 3. J C Henshaw vs M Pein |
| 0-1 | 30 | 1977 | 1st Lloyds Bank Masters Open | A04 Reti Opening |
| 4. P Large vs M Pein |
 | 1-0 | 24 | 1977 | 1st Lloyds Bank Masters Open | B09 Pirc, Austrian Attack |
| 5. M Pein vs G Lambert |
| ½-½ | 31 | 1977 | 1st Lloyds Bank Masters Open | E75 King's Indian, Averbakh, Main line |
| 6. Spassky vs M Pein |
| ½-½ | 16 | 1979 | Simul, 30b | D87 Grunfeld, Exchange |
| 7. Y Kraidman vs M Pein |
| 0-1 | 38 | 1979 | 3rd Lloyds Bank Masters Open | D92 Grunfeld, 5.Bf4 |
| 8. M Pein vs M Sharif |
| ½-½ | 27 | 1979 | 3rd Lloyds Bank Masters Open | E30 Nimzo-Indian, Leningrad |
| 9. M Fuller vs M Pein |
| 0-1 | 50 | 1979 | 3rd Lloyds Bank Masters Open | B07 Pirc |
| 10. Westerinen vs M Pein |
| 1-0 | 48 | 1979 | 3rd Lloyds Bank Masters Open | B09 Pirc, Austrian Attack |
| 11. M Pein vs A P Law |
| 0-1 | 74 | 1979 | 3rd Lloyds Bank Masters Open | E30 Nimzo-Indian, Leningrad |
| 12. W J Donaldson vs M Pein |
| 0-1 | 41 | 1979 | 3rd Lloyds Bank Masters Open | B09 Pirc, Austrian Attack |
| 13. M Pein vs D Friedgood |
| 0-1 | 27 | 1979 | 3rd Lloyds Bank Masters Open | A56 Benoni Defense |
| 14. M Pein vs C Cuartas |
| ½-½ | 53 | 1979 | 3rd Lloyds Bank Masters Open | E74 King's Indian, Averbakh, 6...c5 |
| 15. W Hartston vs M Pein |
| 1-0 | 50 | 1980 | British Championship | D90 Grunfeld |
| 16. M Pein vs E Davis |
| 1-0 | 31 | 1980 | British Championship | E11 Bogo-Indian Defense |
| 17. M J Franklin vs M Pein |
| 1-0 | 38 | 1980 | British Championship | D02 Queen's Pawn Game |
| 18. M Pein vs I R Watson |
| 1-0 | 23 | 1980 | British Championship | A40 Queen's Pawn Game |
| 19. B Denman vs M Pein |
| 0-1 | 28 | 1980 | British Championship | B09 Pirc, Austrian Attack |
| 20. M Pein vs M Hebden |
| 0-1 | 43 | 1980 | British Championship | A57 Benko Gambit |
| 21. P Large vs M Pein |
| ½-½ | 37 | 1980 | British Championship | B07 Pirc |
| 22. M Pein vs D King |
| ½-½ | 21 | 1980 | British Championship | D87 Grunfeld, Exchange |
| 23. J Cooper vs M Pein |
| 1-0 | 95 | 1980 | British Championship | D87 Grunfeld, Exchange |
| 24. M Pein vs D Cummings |
| ½-½ | 27 | 1980 | British Championship | E15 Queen's Indian |
| 25. B Cafferty vs M Pein |
| ½-½ | 32 | 1980 | British Championship | B07 Pirc |
Kibitzing
