[Event "Buenos Aires"] [Site "?"] [Round "7"] [White "Fischer"] [Black "Petrosian"] [Result "1-0"] [ECO "B42"] [Opening "Sicilian: Kan, 5.Bd3"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 bxc6 7. O-O d5 8. c4 Nf6 9. cxd5 cxd5 10. exd5 exd5 {Clearly the isolated queen pawn is going to play a significant role in the game. Part of White's strategy will be to dominate the adjacent files.} 11. Nc3 Be7 12. Qa4+ Qd7 13. Re1 {Fischer does n't engage in cheap theatrics. 13.Bb5?! axb5! 14.Qxa8 O-O and the follow up with Bb7 and an eventual advance of the d-pawn will give Black an excellent game.} 13... Qxa4 14. Nxa4 {The isolated pawn is even weaker in the endgame, and White is halfway toward achieving his goal of dominating the c- and e-files. The pawn at a6, defended doubly for the moment, is also a potential weakness.} 14... Be6 15. Be3 O-O 16. Bc5 {This is the key move. With the dark-squared bishops off the board, the rooks can attack the isolated pawn from the side. In addition, the c5-square will be more easily secured for occupation by the knight.} 16... Rfe8 17. Bxe7 Rxe7 18. b4 {Now we can observe the weakness of the pawn at a6, which will come under the watchful eye of the knight from its new outpost at c5. This, combined with the power of the Be2, will tie down Black's forces.} 18... Kf8 19. Nc5 Bc8 {Mission accomplishe d. Now White must find a way to increase the pressure on d5 but how can he do this?} 20. f3 {Fischer's plan is almost brutal in its simplicity. He threatens to exchange rooks, march his king up the diagonal to d4, chase the knight from f6 and grab the weak pawn at d5.} 20... Rea7 21. Re5 { Just as planned back at move 13!} 21... Bd7 22. Nxd7+ {There comes a time in every plan when the immediate goal is achieved, and it is time to capitalize. The knight, though well placed, has done its job and now the domination of the remaining open file is the primary objective.} 22... Rxd7 23. Rc1 {The weakness of the pawns continues to plague Black, who must now worry about the threat of Rc1-c6.} 23... Rd6 24. Rc7 Nd7 25. Re2 g6 26. Kf2 h5 27. f4 h4 28. Kf3 f5 29. Ke3 {The sixth is protected. Black is virtually in zugzwang, so he advances his prized pawn, and opens up more lines for White.} 29... d4+ 30. Kd2 Nb6 31. Ree7 Nd5 32. Rf7+ Ke8 33. Rb7 { This appears to drop a a pawn, but in fact it guarantees victory.} 33... Nxb4 34. Bc4 { and Petrosian resigned, because after 34...Nc6 35.Rh7 Rf6 36.Rh8+ Rf8 37.Bf7+.} 1-0