[Event "Amsterdam"] [Site "?"] [Round "0"] [White "Szabo"] [Black "Unzicker"] [Result "1-0"] [ECO "E10"] [Opening "Neo-Indian: 3.Nf3"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 cxd4 8. exd4 Be7 9. O-O O-O 10. Re1 Nf6 11. a3 b6 12. Bg5 Bb7 13. Bc2 Ba6 14. Qd2 Rc8 15. Qf4 $1 Re8 16. Rad1 h6 $2 {Another weakening} (16... g6 17. Qh4 Nd5 18. Nxd5 exd5 19. Rxe7 $2 { Based on dark square tactic, but Black removes the f5 guard} 19... Nxe7 20. Bf6 Rxc2 21. Qh6 Nf5) 17. Bxf6 $1 Bxf6 18. d5 $1 {The possessor an isolated d-pawn must be constantly on the lookout for the chance of this breakthrough} 18... exd5 (18... Bxc3 19. dxc6) 19. Rxe8+ Qxe8 20. Qf5 {This is the real point. Black cannot now prevent the penetration at h7 since the g-pawn is the only defence onBf6} 20... Bxc3 (20... Ne7 21. Qh7+ Kf8 22. Qh8+ Ng8 23. Bh7 { followed by Re1}) (20... Kf8 21. Re1 Qd8 22. Nxd5 Bxb2 23. Nf4 $1) 21. Qh7+ Kf8 22. bxc3 Ne5 $1 23. Nd4 $1 (23. Qh8+ Ke7 24. Qxe8+ Kxe8 25. Nxe5 Rxc3 $132) 23... Ng6 24. h4 $1 h5 (24... Qe5 25. h5 Qxh5 {Black can't defend the g7 square }) 25. Bf5 $1 Rxc3 26. Ne6+ $1 {By means of this pretty continuation, the Black King is now bereft of his protecting pawns} 26... fxe6 27. Bxg6 Qc6 28. Qh8+ Ke7 29. Qxg7+ Kd6 30. Re1 $1 Bc8 (30... Rc1 31. Qf8+ Kc7 32. Qf4+) 31. Bxh5 Qc5 32. Bg4 Rc2 33. Qf6 Kc6 34. h5 $1 {Shortest way to a win} 34... Rc1 35. Rxc1 Qxc1+ 36. Kh2 Qxa3 37. h6 Qd6+ 38. f4 Qc7 1-0