[Event "Las Palmas Interzonal"] [Site "?"] [Round "0"] [White "Timman"] [Black "Petrosian"] [Result "0-1"] [ECO "D24"] [Opening "QGA: 4.Nc3"] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 c6 5. a4 Bg4 6. Ne5 Bh5 7. f3 {The idea i s to build a strong pawn center but this plan makes it very hard for White to castle.} 7... Nfd7 8. Nxc4 e5 {A temporary pawn sacrifice which allows Black to develop quickly and take over the initiative.} 9. Nxe5 Nxe5 10. dxe5 Nd7 11. f4 Bb4 12. Qc2 Qe7 { Played with the idea of gaining the e4 square after 13...f6 14 exf6 Nxf6.} 13. e4 g5 14. Be2 {14.g4 Bxg4 15.Rg1 h5 16.h3 Qc5 17.Rg3 gxf4 when Black is winning because of White's shattered position.} 14... gxf4 15. e6 {This pawn th rust is to ambitious. 15.Bxh5 Qh4+ 16.Qf2 Qxh5 17.Bxf4 was a better way to play.} 15... Qh4+ 16. Kf1 { 16.g3 fxg3 17.exd7+ Ke7 leaves Black with an overwhelming position.} 16... Bxe2+ 17. Qxe2 fxe6 { Black has a won game due to his material advantage and White's exposed king.} 18. Qf2 Qe7 19. e5 Nxe5 20. Bxf4 Rf8 21. Rd1 Bc5 { White resigned because of Black's winning attack down the f-file.} 0-1