Author: Rafael Andrist
Date: 09:57:57 05/27/01
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Why sould this position be difficult? The move Kb1 is practically forced. My program finds Kb1 immediately and at ply 18 it sees that White can at least equalize. Its clear that it does not see the mate, because it is too far away. On May 27, 2001 at 12:01:56, Andrew Smith wrote: >Here's an interesting endgame position which may prove too difficult for most >programs. It is white to move and mate in 50! Good luck! > [D]k1b5/1pBp1p1p/1P1PpP2/1p4P1/4p3/8/1pK1P3/b7 w - - 0 1 > > >Solution: 1. Kb1! e3 2. Bd8 Kb8 3. Be7 Ka8 4. Bf8 Kb8 5. Bg7 Ka8 6. Bh7!! (White >wastes a tempo with his bishop to force black into zugswang) Kb8 7. Bf8! Ka8 8. >Be7 Kb8 9. Bd8 Ka8 10. Bc7! b4 11. Bd8 Kb8 12. Be7 Ka8 13.Bf8 Kb8 14. Bh6 Ka8 >15. Bg7! Kb8 16. Bf8 Ka8 17. Be7 Kb8 18. Bd8 Ka8 19. Bc7! b3 20. Bd8 Kb8 21. Be7 >Ka8 22. Bd8 Kb8 23. Bg7 Ka8. 24. Bh6 Kb8 25. Bf8 Ka8 26. Be7 Kb8 27. Bd8 Ka8 28. >Bc7 e5 29. Bd8 Kb8 30. Be7 Ka8 31. Bf8 Kb8 32. Bg7 Ka8 33. Bh6 Kb8 34. Bf8 Ka8 >35. Be7 Kb8 36. Bd8 Ka8 37. Bc7 e4 38. Bd8 Kb8 39. Be7 Ka8 40. Bf8 Kb8 41. Bg7 >Ka8 42. Bh6 Kb8 43. Bf8 Ka8 44. Be7 Kb8 45. Bd8 Ka8 46. Bc7! h6 47. g6! fxg6 48. >f7 h5 49. f8Q h4 50. Qxc8#
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