1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 cxd4 6. axb4 dxc3 7. Qg4 Ne7 8. Qxg7 Rg8 9. Qxh7 Nbc6 10. Nf3 Qc7 11. Bb5 Bd7 12. Bxc6 Bxc6 13. O-O d4 14. Ng5 cxb2 15. Qxf7+ Kd8 16. Nxe6+ Kc8 17. Bg5 Qxe5 18. Rae1 Qd6 19. f3 Re8 20. Bf4 Qd5 21. Bg5 Qd6 22. Bxe7 Rxe7 23. Qf8+

Black resigned in a winning position. He should have played 23... Be8! and now the key variation is 24. Re4 (the best chance is 24. Qf5 b1=Q! 25. Nxd4+ Bd7 26. Qf8+ Kc7 27. Nb5+ Bxb5 28. Qxe7+ Qxe7 29. Rxe7+ Kd8 30. Rxb1 Kxe7 but Black must be winning here too) 24... Rxe6 25. Qxd6 Rxd6 26. Rxe8+ Kd7! 27. Rxa8 Ra6 28. Re1 Ra1 29. Re8 Rc1 and wins (David McAlister).

1-0

Reference(s): Duignan-Diskin, Irish championship, Galway 1949 (brilliancy prize), IRLchess, December 20, 2011; Did Diskin resign in a winning position?, IRLchess, December 22, 2011.

Event information: Tournament report.