| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. M E Osborne vs Gulko |
| 0-1 | 32 |
1992 |
Bern | C08 French, Tarrasch, Open, 4.ed ed |
| 2. B Lalic vs M E Osborne |
| 1-0 | 45 |
1998 |
Islington Congress | C41 Philidor Defense |
| 3. M E Osborne vs W McDougall |
| 0-1 | 25 |
2001 |
Portsmouth op | A57 Benko Gambit |
| 4. A Therrien vs M E Osborne |
| ½-½ | 36 |
2008 |
4NCL 2007-8 | E02 Catalan, Open, 5.Qa4 |
| 5. M E Osborne vs J Jirka |
| 0-1 | 46 |
2008 |
4NCL 2007-8 | D15 Queen's Gambit Declined Slav |
| 6. A Summerscale vs M E Osborne |
| 1-0 | 19 |
2010 |
London Chess Classic FIDE Open | E20 Nimzo-Indian |
| 7. M E Osborne vs S Grover |
| 0-1 | 34 |
2010 |
London Chess Classic FIDE Open | E32 Nimzo-Indian, Classical |
| 8. M E Osborne vs Hebden |
| ½-½ | 60 |
2011 |
4NCL | E80 King's Indian, Samisch Variation |
| 9. D Bisby vs M E Osborne |
| ½-½ | 22 |
2011 |
4NCL | E00 Queen's Pawn Game |
| 10. M Wadsworth vs M E Osborne |
| ½-½ | 27 |
2012 |
4NCL 2012/13 | C05 French, Tarrasch |
| 11. M P Townsend vs M E Osborne |
| 1-0 | 57 |
2012 |
4NCL | A02 Bird's Opening |
| 12. M E Osborne vs P Poobalasingam |
| ½-½ | 55 |
2012 |
British Championships | D25 Queen's Gambit Accepted |
| 13. M E Osborne vs R Sayers |
| ½-½ | 32 |
2012 |
London Chess Classic Open | A11 English, Caro-Kann Defensive System |
| 14. R Palliser vs M E Osborne |
| 0-1 | 43 |
2012 |
British Championships | A47 Queen's Indian |
| 15. M E Osborne vs R Willmoth |
| ½-½ | 64 |
2012 |
4NCL 2012/13 | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 16. M E Osborne vs Galego |
| ½-½ | 74 |
2012 |
4NCL | A53 Old Indian |
| 17. D Kolbus vs M E Osborne |
| ½-½ | 27 |
2012 |
British Championships | A15 English |
| 18. T Hebbes vs M E Osborne |
| 0-1 | 40 |
2012 |
London Chess Classic Open | E62 King's Indian, Fianchetto |
| 19. M E Osborne vs M Wadsworth |
| 1-0 | 21 |
2012 |
British Championships | A85 Dutch, with c4 & Nc3 |
| 20. D Howell vs M E Osborne |
| 1-0 | 29 |
2012 |
British Championships | C12 French, McCutcheon |
| 21. B Holzhauer vs M E Osborne |
| 1-0 | 55 |
2012 |
London Chess Classic Open | E32 Nimzo-Indian, Classical |
| 22. M White vs M E Osborne |
| 1-0 | 34 |
2012 |
4NCL | B32 Sicilian |
| 23. M E Osborne vs T Chapman |
| ½-½ | 32 |
2012 |
British Championships | A57 Benko Gambit |
| 24. M E Osborne vs W Phillips |
| 1-0 | 37 |
2012 |
London Chess Classic Open | E92 King's Indian |
| 25. Conquest vs M E Osborne |
| ½-½ | 32 |
2012 |
British Championships | C00 French Defense |