[Event "Lugano Ol"] [Site "Lugano Ol"] [Date "1968.??.??"] [Round "?"] [White "Lodewijk Prins (?)"] [Black "Lawrence Day (?)"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "B28"] [Opening "Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen Line"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 c5 2. Nf3 e6 3. c4 a6 { B28 Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen Line } 4. Be2 Nc6 5. O-O Nf6 6. Nc3 Qc7 7. a3 b6 8. d4 cxd4 9. Nxd4 Bb7 10. Be3 Bd6 11. h3 Be5 12. Qd3 h5?! { (0.28 → 1.03) Inaccuracy. O-O was best. } (12... O-O) 13. Rfc1?! { (1.03 → 0.00) Inaccuracy. Nf3 was best. } (13. Nf3) 13... Bh2+ 14. Kf1 Ne5 15. Qd1 Nxe4 16. Na4 Nc5 17. Nxb6?! { (-0.72 → -1.81) Inaccuracy. Nxc5 was best. } (17. Nxc5 bxc5) 17... Qxb6 18. Nf3 Qc6?? { (-1.82 → 0.00) Blunder. Ng4 was best. } (18... Ng4 19. Nxh2) 19. Bxc5 Bf4 20. Be3 Bxe3 21. fxe3 Ng4?! { (-0.39 → 0.41) Inaccuracy. g5 was best. } (21... g5) 22. hxg4 hxg4 23. Ne1?? { (0.00 → -9.14) Blunder. Kf2 was best. } (23. Kf2 gxf3 24. Bxf3 Qc7 25. b4 Rh6 26. Qd4 e5 27. Qg4 Rg6 28. Qh4 Rf6 29. Ke2 Rh6) 23... Rh1+ 24. Kf2 g3+ 25. Kxg3 Rxe1 26. Qxe1? { (-8.16 → Mate in 5) Checkmate is now unavoidable. Bf3 was best. } (26. Bf3 Qc7+) 26... Qxg2+ 27. Kf4 g5+ 28. Ke5 Qe4+ 29. Kf6 Qf5+ 30. Kg7 Qg6+ 31. Kh8 O-O-O# { Black wins by checkmate. } 0-1