[Event "Amsterdam"] [Site "?"] [Round "0"] [White "Korchnoi"] [Black "Kasparov"] [Result "0-1"] [ECO "A05"] [Opening "Reti: 1...Nf6"] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. a4 {Piket played 13.b4 against me in this position. You can load that game and examine it, noting that the plan is quite different here. The idea is to play Nb5, and if Black plays b7-b6, I can play a4-a5.} 13... Ng6 {This is the most common move, though there are lots of other possibilities. 13...h5 is an agressive and interesting line that leads to a pawn sacrifice. 13...h5 14.Nb5 Nf6 15.Nxa7 Bd7 16.Nb5 g4} 14. Nd3 Nf6 15. c5 h5 16. h3 Rf7 { This is a typical defensive maneuver. The rook protects c7.} 17. c6 a5 { Even though I want to continue with my kingside attack, I have to stop for a moment to protect my queenside.} 18. cxb7 { 18.b4 b6 19.bxa5 bxa5 White will not be able to make progress on the queenside. } 18... Bxb7 19. b4 Bc8 20. bxa5 Bh6 {This is the critical position. I think that White could have won some valuable time by playing 21.a6 which would have deflected the bishop from c8.} 21. Nb4 g4 22. Nc6 Qf8 23. fxg4 hxg4 24. hxg4 { 24.Bxg4 Nxg4 25.hxg4 f3 Black has an overwhelming attack.} (24. Bxg4 Nxg4 25. hxg4 f3) 24... Bg5 25. Bf3 Qh6 26. Re1 Nh4 { The threat is Nxf3+ followed by Bxg4. So White captures at h4.} 27. Bxh4 Bxh4 { This is the right capture, because the bishop has a role to play in the final assault.} 28. g5 Qxg5 29. Re2 Ng4 30. Rb1 Bg3 31. Qd3 Qh4 0-1