Author: Dieter Buerssner
Date: 10:49:53 10/22/04
I have seen the position, when Kramnik played 49...Ke4 seen discussed here, and
Ke4 was critisized. I analyzed the game from back to front with Yace. After Ke4,
Kramnik still had a forced win. After 50...Kd3 (Kramnik's move), I get a draw
score (with quite some backwards analysis). I also looked at Kd5, and it seems
to be a draw, too. For Kd4, however, I get a score of +5, so I am pretty sure,
that it is a forced win (for most variations, I got a score of +10, but then I
lost patience, and thought +5 shall be sufficient).
I had to analyse many lines, to get this score (but everything was rather
mechanical, I didn't have to really think, just do the moves suggested by the
engine). The following line could be considered the main line:
[Event "Worldchampionship"]
[Site "?"]
[Date "2004.10.16"]
[Round "?"]
[White "Leko, Peter"]
[Black "Kramnik, Vladimir"]
[ECO "A73"]
[Result "*"]
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 d6 5. Nc3 exd5 6. cxd5
g6 7. Nd2 Bg7 8. e4 O-O 9. Be2 Na6 10. O-O Ne8 11. Nc4 Nac7
12. a4 f5 13. exf5 Rxf5 14. Bg4 Rf8 15. Bxc8 Rxc8 16. Qb3
b6 17. Nb5 Nxb5 18. axb5 Rc7 19. Bd2 Rcf7 20. Bc3 Qd7
21. f3 g5 22. Ne3 Rf4 23. Rfe1 h5 24. Qc2 Qf7 25. h3 Bd4
26. Bxd4 Rxd4 27. Nf5 Qxf5 28. Qxf5 Rxf5 29. Rxe8+ Kf7
30. Rb8 Rdxd5 31. Rxa7+ Ke6 32. Re8+ Kf6 33. g4 hxg4
34. hxg4 Rd1+ 35. Kf2 Re5 36. Rh8 Rd2+ 37. Kg3 Ree2
38. Rf8+ Kg6 39. Rg8+ Kf6 40. Rf8+ Ke6 41. Re8+ Kd5
42. Rxe2 Rxe2 43. Rg7 Re5 44. Rb7 c4 45. Rxb6 Re2 46. f4
Re3+ 47. Kf2 gxf4 48. Rb8 Rb3 49. b6 Ke4 50. Re8+ Kd4 {See
diagram. Here Kramnik moved Kd3 and the game ended draw}
51. Re2 f3 52. Rd2+ Ke4 53. Rxd6 Rxb2+ 54. Kg3 f2 55. Re6+
Kd5 56. Rf6 c3 57. Rxf2 c2 58. Rf5+ Kc6 59. Rf8 Kb7
60. Rf7+ Kxb6 61. Rf6+ Kb5 62. Rf5+ Kb4 63. Rf4+ Kb3
64. Rf3+ Ka2 65. Rf1 {mate in 38 or better} *
[D] 4R3/8/1P1p4/8/2p1kpP1/1r6/1P3K2/8 b - - 2 50
Any engine, that moves Kd4 here? Does it give Kd4 a significant better score,
than other moves?
Regards,
Dieter
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