[Event "Moscow Interzonal"] [Site "?"] [Round "0"] [White "Christiansen"] [Black "Kasparov"] [Result "0-1"] [ECO "E70"] [Opening "King's Indian: 4.e4 d6"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 {The Four Pawns Attack is the most aggressive response to the King's Indian Defense. If Black is well-prepared, however, he can wind up with a strong initiative.} 5... O-O 6. Nf3 c5 {This is the most principled reply, attacking White's broad pawn center in true hypermodern style.} 7. d5 e6 {Black can also adopt the strategy of the Benko Gambit by playing 7...b5, but I have never really liked that opening and prefer to stick to a King's Indian or Benoni style.} 8. dxe6 {8.Be2 is the normal move. This capture weakens my pawn structure a bit but also gives me useful central pawns, which play a major role in this game.} 8... fxe6 9. Bd3 { I think 9.Be2 would have been a better move.} 9... Nc6 10. O-O Nd4 11. Ng5 e5 12. f5 h6 13. Nh3 {13.fxg6 hxg5 14.Bxg5 Be6 15.Nd5 This looks like a promising sacrificial line, but there is a strong reply. 15...Bxd5 16.exd5 e4 17.Bxe4 Qe7 The three pawns are not sufficient compensation for Black's active piece.} 13... gxf5 14. exf5 b5 15. Be3 bxc4 16. Bxc4+ Kh8 17. Bxd4 cxd4 { These central pawns give Black a big advantage.} 18. Nd5 { Now I need to get the pawns marching forward.} 18... Ba6 19. Nxf6 Bxc4 20. Nh5 Bxf1 21. Qg4 {White has sacrificed the exchange for a small kingside attack. But the real issue is still the central pawns.} 21... Qd7 22. Rxf1 d3 23. Qf3 d2 24. g4 Rac8 25. Qd3 Qa4 26. Nf2 Qd4 27. Qxd4 exd4 { The pawns are tripled and seemingly weak, but they still get the job done.} 28. Nf4 Rfe8 29. Ne6 Rc1 30. Nd1 Bf6 31. Kf2 Bg5 32. Ke2 Rc5 { The rook cannot be captured because of the pin on the e-file.} 33. Kd3 Re5 34. Nxg5 {34.Kxd4 Re1} 34... hxg5 35. Rf2 Re4 36. h3 Re3+ 37. Kxd4 R8e4+ 38. Kd5 Re2 39. Rf3 Re1 40. f6 Rf4 0-1