27/03/2018

Human vs Computer

[Event "Man-Machine World Championship"] [Site "New York"] [Date "2003.11.13"] [Round "2"] [White "X3D Fritz"] [Black "Kasparov, Garry"] [Result "1-0"] [ECO "C66"] [BlackElo "2830"] [Annotator "Schulz, André"] [PlyCount "77"] {Beispiel für Annotation, Paukstadt 29.3. Wintereinbruch :-(( im Frühling}1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 { Following Kramnik's strategy? Kasparov goes for the Berlin Defence} 4. d3 { Surprise!} (4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 { leads to the Berlin}) 4... d6 5. c3 g6 6. O-O Bg7 7. Nbd2 O-O 8. Re1 Re8 $146 ( 8... Bd7 9. a4 a6 10. Bc4 Be6 11. a5 Bxc4 12. dxc4 Nh5 { 1/2-1/2 Ponomariov,R-Grischuk,A/Panormo 2001/CBM 84 ext (12)}) 9. d4 Bd7 10. d5 Ne7 11. Bxd7 Nxd7 {The structure reminds us of the King's Indian, an opening in which computers have traditionally not fared too well.} 12. a4 h6 13. a5 { A positionally justified advance of the a-pawn} a6 14. b4 f5 15. c4 Nf6 16. Bb2 {This move was criticised by many commentators} (16. Qb3 $5) 16... Qd7 17. Rb1 (17. Rc1 { and} -- 18. c5 {was expected}) 17... g5 { Khalifman thought f5-f4 was better.} 18. exf5 { Necessary, otherwise White will be overrun} Qxf5 19. Nf1 { With the following manoeuvres Fritz takes control of the square e4.} Qh7 $5 ( 19... Qg6) 20. N3d2 Nf5 (20... Ng6 21. Ng3 Nf4 22. Nde4 { probably did not appeal to Kasparov}) 21. Ne4 Nxe4 22. Rxe4 h5 23. Qd3 Rf8 24. Rbe1 Rf7 25. R1e2 {This and the following moves were criticised. Fritz is not playing actively enough.} g4 26. Qb3 Raf8 27. c5 (27. b5 { was better according to Khalifman}) 27... Qg6 28. cxd6 cxd6 29. b5 axb5 30. Qxb5 Bh6 {The black plan is now h5-h4-h3 (or g3) with attack. Most annotators now thought that Black had the advantage.} 31. Qb6 {Threatens taking on e5, because the queen on g6 is unprotected and so the pawn on d6 is pinned.} Kh7 32. Qb4 {This move prevents h5-h4, because otherwise g4 is hanging. With his next move Kasparov renews the threat but overlooks the fact that the rook on f8 is no longer protected. Kasparov was in time trouble.} Rg7 {Immediately after playing the move Kasparov jumps to his feet and shakes his head.} 33. Rxe5 {Fritz is not one to miss this shot. Vishy Anand on the Playchess server: "Tricky beast."} dxe5 34. Qxf8 Nd4 35. Bxd4 exd4 36. Re8 {threatens mate on h8} Rg8 37. Qe7+ ({Not} 37. Qxg8+ Qxg8 38. Rxg8 Kxg8 { and the white advantage disappears}) 37... Rg7 (37... Bg7 38. Rxg8 Kxg8 39. Qxb7 $18) (37... Kh8 38. Rxg8+ Kxg8 39. Qxb7 $18) 38. Qd8 { once again threatens mate.} Rg8 39. Qd7+ (39. Qd7+ Rg7 40. Qc8 Rg8 41. Qxb7+ $18) 1-0

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