[Event "Simultaneous Exhibition"] [Site "?"] [Round "0"] [White "Kasparov"] [Black "Schweizer"] [Result "1-0"] [ECO "D85"] [Opening "Gruenfeld: Exchange, 5.e4"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 { The Grunfeld Defense, which I have played many times with the Black pieces!} 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 {The exchange variation is considered one of White's most violent attempts to gain an advantage.} 6... Bg7 7. Bc4 c5 8. Ne2 {The knight goes to e2 thus avoiding the unpleasant pin of Bg4.} 8... Nc6 9. Be3 {White's center has just enough protection to maintain itself.} 9... O-O 10. O-O cxd4 11. cxd4 Bg4 12. f3 Na5 13. Bd3 {13.Bxf7+ Rxf7 14.fxg4 Rxf1+ 15. Kxf1 is a pawn sacrifice I have played many times with Black!} 13... Be6 14. d5 {This move carries with it an exchange sacrifice, the aim of which is to weaken Black's dark squares.} 14... Bxa1 15. Qxa1 f6 { 15...Bd7 16.Bh6 threatening mate on g7. 16...f6 17.Bxf8} 16. Rb1 b6 17. Bh6 { 17.dxe6 would be a mistake because of ...Qxd3} 17... Re8 18. Nf4 { Forcing the Black bishop to move, thanks to the threat of 19.Nxe6.} 18... Bf7 19. e5 {With the threat of trapping Black's bishop by e6.} 19... Bxd5 { 19...e6 is the alternative.} 20. Rd1 e6 21. Bb5 f5 22. Bxe8 Qxe8 23. Rxd5 { In this way White is able to open up the a1-h8 diagonal to advantage.} 23... exd5 24. e6 d4 25. Qxd4 Qe7 26. Nd5 Qc5 27. Qxc5 bxc5 28. Nf6+ { Black resigned since he is unable to stop White's passed e-pawn from promoting. } 1-0