[Event "Moscow"] [Site "?"] [Round "0"] [White "Kasparov"] [Black "Petrosian"] [Result "0-1"] [ECO "E12"] [Opening "Queen's Indian: Petrosian"] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 {I am playing the Petrosian variation of the Queen's Indian Defense, so named after my opponent who popularized it for White!} 4... Bb7 5. Nc3 d5 6. cxd5 Nxd5 { 6...exd5, not giving up control of the center so easily, is also playable.} 7. e3 Be7 8. Bb5+ {Played to disrupt my opponent's normal development.} 8... c6 9. Bd3 Nxc3 10. bxc3 c5 11. O-O O-O 12. Qc2 { White weakens Black's kingside before advancing in the center with e4.} 12... g6 13. e4 Nc6 {Played with the intention of putting pressure on White's d-pawn. } 14. Bh6 Re8 15. Rfd1 Qc7 { 15...cxd4 16.cxd4 Nxd4 17.Nxd4 Qxd4 allows White to win material.} 16. Qe2 Red8 17. Qe3 {Played in order to protect the d-pawn while eyeing the dark squares around Black's king.} 17... e5 {A committal move which gives White a passed d-pawn. However, Black believes it will do no harm since he can easily set up a blockade. 17...Rd7 18.Bf4 Qd8 19.Bb5 is better for White because of the pressure his bishops exert on the Black position.} 18. d5 Na5 {This posit ion reminds me of the Grunfeld Defense, where Black also allows a passed d-pawn.} 19. c4 {Otherwise Black will expand on the queenside with 19...c4.} 19... Nb3 20. Ra2 f6 21. h4 Bc8 22. Rb1 Nd4 23. Nxd4 cxd4 24. Qg3 Bf8 25. Bd2 {Although b oth sides have protected passed pawns, White also has a kingside initiative.} 25... Bd6 26. Rf1 Qg7 27. a4 {White plays on both sides of the board in order to spread the Black pieces away from their king.} 27... a5 28. Rb2 Bc5 29. f4 { With the Black bishop on c5 this advance is more powerful.} 29... Bd7 30. h5 { Played with a pawn sacrifice in order to break through on the kingside.} 30... Bxa4 31. h6 Qc7 {31...Qxh6 32.fxe5} 32. f5 g5 { 32...Qf7 33.fxg6 hxg6 34.Bg5 is good for White thanks to the pin on the f-file. } 33. Bxg5 { An interesting sacrifice which unfortunately I did not follow up correctly.} 33... fxg5 34. Qxg5+ Kf8 35. Qf6+ {A mistake. Correct was 35.f6. (It should be noted that I was in serious time trouble.) Then 35...Qf7 is forced otherwise White will play 36.f7. So now 36.Qxe5 Re8 37.Qg5 Qg6 38.Rf5 Qxg5 39.Rxg5 when White's three passed pawns prove decisive.} (35. f6 Qf7 36. Qxe5 Re8 37. Qg5 Qg6 38. Rf5 Qxg5 39. Rxg5) 35... Ke8 36. Ra1 Qe7 37. Qe6 {37.Qxe7+ Kxe7 38. Rxa4 Rd6 would retain drawing chances because of the opposite colored bishops.} 37... Rd6 38. Qg8+ Qf8 39. Qg3 Qxh6 40. Rxa4 Qc1+ 41. Kf2 Qxb2+ { White resigned.} 0-1