Author: Rory Nolan
Date: 06:56:42 01/19/06
Go up one level in this thread
On January 18, 2006 at 19:15:58, Dann Corbit wrote: >On January 18, 2006 at 18:33:27, Vincent Lejeune wrote: > >>On January 18, 2006 at 17:15:18, Rory Nolan wrote: >> >>>Hello all, >>>I found this positon in 'Chess for Zebras'. Can any engine find the move >>> >>>44...Nb3!! >>> >>>[D] 2k5/3b4/2q1p1Bp/ppn1P1pP/2pQP1P1/P1P5/2P2B1K/8 b - - 0 1 >>> >>>all the best >>>Rory >> >>Why Nb3 is a good move ? >>I only find white is winning after this sac :-( > >I guess that he is hoping for big things from the passed pawn. >I don't see it either[*]. I will try some engines and see what they can come up >with. > >[*] Which reminds me of the Star Wars line, "You shall PAY for your lack of >VISION!!!" I'm more or less quoting from the book here so 'Black judges that he can afford to sac. a piece because the bishop is cut off on g6'.... 'The alternative is 44...Na4 but then the knight is sidelined black has no meaning ful counterplay and white can organise a bishop sac on g5 followed by queening the h-pawn.'... Rowson goes on but a bit but here is on possible line 45. cxb3 cxb3 46. c4 Qxc4! 47. Qxc4 bxc4 48. Bd4 Kc7 'the extra piece is not felt and the black king can disrupt the blockade' Black may even be winning here; Rowson e.g. 49.Kg3 K5c6 50.a4 c3! 51 Bxc3 Kc5 and white loses slowly but surely good stuff eh best Rory > >>[Event "?"] >>[Site "?"] >>[Date "????.??.??"] >>[Round "?"] >>[White "Chess for Zebras"] >>[Black "?"] >>[Result "*"] >>[SetUp "1"] >>[FEN "2k5/3b4/2q1p1Bp/ppn1P1pP/2pQP1P1/P1P5/2P2B1K/8 b - - 0 1"] >>[PlyCount "102"] >> >>1... Nb3 2. cxb3 cxb3 3. Qd2 Qc7 4. Bd4 Kb7 5. Kg2 Qc4 6. Kf2 a4 7. Ke1 Bc6 8. >>Qf2 Ka6 9. Kd1 Bb7 10. Kc1 b4 11. Kb2 bxc3+ 12. Bxc3 Bc6 13. Qd2 Kb7 14. Bb4 >>Qb5 15. Bd6 Qf1 16. Bc5 Qf3 17. Bd4 Kc8 18. Qf2 Qxg4 19. Qf8+ Kc7 20. Kc3 Qh3+ >>21. Kb4 b2 22. Qe7+ Kc8 23. Bxb2 Qb3+ 24. Kc5 Qb5+ 25. Kd6 Qb6 26. Qf8+ Kb7 27. >>Qf7+ Kc8 28. Bd4 Qxd4+ 29. Kxc6 Qc3+ 30. Kd6 Qd4+ 31. Ke7 Qd8+ 32. Kxe6 Qb6+ >>33. Kd5 Qb5+ 34. Kd4 Qb2+ 35. Kc4 Qb3+ 36. Kc5 Qxa3+ 37. Kb6 Qe3+ 38. Ka6 Qd3+ >>39. Ka5 Qc3+ 40. Kxa4 Qd4+ 41. Ka3 Qc3+ 42. Qb3 Qxe5 43. Bf5+ Kc7 44. Kb4 Qe7+ >>45. Kc3 Qf6+ 46. Kd3 Qd6+ 47. Kc4 Qa6+ 48. Kd4 Qf6+ 49. Ke3 Kd8 50. Qg8+ Ke7 >>51. Qh7+ Kf8 52. Qc7 *
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