Author: Roy Eassa
Date: 14:02:17 05/26/02
Go up one level in this thread
On May 26, 2002 at 08:36:08, Sune Larsson wrote: > > [D]k1r5/1p1b4/p1q1r2p/3pRpp1/PB1P4/1QP3P1/5RPP/6K1 b - - 0 36 > > This is a position from the game GM Votava-IM Berg in the 8th round > of the International Hamburg-ch. With only 4 moves to go before the > 1st time control, Emanuel decides to set a little trap for his opponent > with 36.-Tce8! Votava walks right into it with 37.Rfxf5 Rxe5 38.Rxe5 Rxe5 > 39.dxe5 Qb6+ 40.Kf1 > > Test 1: Avoid this move sequence for white, starting with 37.Rfxf5. > > Can we assume that, with perfect play, Black wins after 36...Rce8 37.Rfxf5? If so: 1) What should White do instead on move 37 to avoid losing? 2) This is a good example of something a human can see and understand that a computer cannot (it is *much* too deep for any computer) -- do you agree? > [D]k7/1p1b4/pq5p/3pP1p1/PB6/1QP3P1/6PP/5K2 b - - 0 40 > > Now comes the point - creating a deadly passer and forcing a won > pawn ending. 40.-a5! 41.Qxd5 axb4 42.Qxd7 b3 43.Qd3 b2 44.Qb1 Qb3 > 45.Ke2 Qxc3 46.Kd1 Qd4+ 47.Kc2 Qxa4+! 48.Kxb2 Qb5+ 49.Kc2 Qxb1+ 50.Kxb1 > > Test 2: Find 40.-a5! and 41.-axb4 > > > [D]k7/1p6/7p/4P1p1/8/6P1/6PP/1K6 b - - 0 50 > > This pawn ending is lost for white. > > Test 3: Steer into this ending with 47.-Qxa4+! > Evaluate the above position as won for black. > > > The whole game below. > > >[Event "IHEM 2002"] >[Site "Hamburg"] >[Date "2002.05.25"] >[Round "8.2"] >[White "Votava, Jan"] >[Black "Berg, Emanuel"] >[Result "0-1"] >[WhiteElo "2508"] >[BlackElo "2514"] >[PlyCount "116"] >[EventDate "2002.??.??"] > >1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 Ne7 5. Nge2 c5 6. exd5 exd5 7. a3 Bxc3+ 8. >Nxc3 c4 9. Be2 Nbc6 10. Bf3 Be6 11. Ne2 Nf5 12. c3 g5 13. Ng3 Nxg3 14. fxg3 h6 >15. O-O Qd7 16. Bh5 O-O-O 17. Be3 f5 18. Qd2 Qd6 19. Rae1 Rdf8 20. Qe2 Rf6 21. >Bc1 Rhf8 22. Rf2 Bd7 23. Ref1 Kb8 24. Qd1 Ka8 25. Qd2 Ne7 26. Bd1 Be6 27. Bc2 >a6 28. b4 cxb3 29. Bxb3 Nc6 30. a4 Na5 31. Qa2 Rc8 32. Ba3 Qc6 33. Bb4 Nxb3 34. >Qxb3 Bd7 35. Re1 Re6 36. Re5 Rce8 37. Rfxf5 Rxe5 38. Rxe5 Rxe5 39. dxe5 Qb6+ >40. Kf1 a5 41. Qxd5 axb4 42. Qxd7 b3 43. Qd3 b2 44. Qb1 Qb3 45. Ke2 Qxc3 46. >Kd1 Qd4+ 47. Kc2 Qxa4+ 48. Kxb2 Qb5+ 49. Kc2 Qxb1+ 50. Kxb1 Kb8 51. Kc2 Kc7 52. >Kd3 Kd7 53. h4 g4 54. h5 Ke6 55. Ke4 b5 56. Kd4 b4 57. Kc4 Kxe5 58. Kxb4 Ke4 >0-1 > >Sune
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