Author: Robert Hyatt
Date: 05:44:27 11/29/99
Go up one level in this thread
On November 29, 1999 at 06:04:26, Jeremiah Penery wrote: >On November 29, 1999 at 05:03:47, Thom Perry wrote: > >>On November 28, 1999 at 21:28:39, Jeremiah Penery wrote: > >>>I do not have a PV for mate in 14, but here is the PV for mate in 74: >>>Moves with a '!' are the 'best' move in the position - the only move that is >>>either the fastest way to win or the slowest way to lose. >>>I'm not sure why it's 74, either. Looks like 75 to me... > >>>1. ... Ke5! 2. Rc5+! Kd6! 3. Kb4! Rb1! 4. Rc2! Rf1 5. Kb5! Rf5+! >>>6. Kb6! Rf8! 7. Rd2+! Ke5! 8. Kc7 Rf1 9. Kc6! Rc1+! 10. Kb5! Rc8! >>>11. Rh2! Rb8+! 12. Kc6! Ke6! 13. Rh6+! Ke7 14. Rh7+! Ke6! 15. Rh2! >>>Ke7! 16. Kc7! Rb3 17. Re2+! Kf7! 18. Kc6! Rb8! 19. Kd5 Kf6! 20. Kc5! >>>Rc8+! 21. Kd6! Rb8! 22. Rf2+! Kg6! 23. Kc6! Kg7! 24. Kc5! Rc8+! 25. >>>Kd5 Rb8 26. Kc4! Rc8+! 27. Kd3 Rb8 28. Kc2! Rc8+! 29. Kb1! Rb8! 30. >>>Rf4! Kg6! 31. Ka2! Ra8+! 32. Kb3! Rh8! 33. Ka3! Ra8+ 34. Ra4! Rb8! >>>35. b3! Kf6! 36. Re4! Ra8+ 37. Kb4! Rc8 38. Kb5! Rb8+ 39. Kc4! Rc8+ >>>40. Kd5! Rd8+ 41. Kc6! Kf5! 42. Rh4 Rc8+ 43. Kd7 Rc1 44. b4! Rb1 >>>45. Rc4 Kf6! 46. Kc6! Ke7! 47. b5! Kd8! 48. Ra4! Rc1+! 49. Kb7! Rc7+! >>>50. Ka6! Rc1 51. b6! Kc8! 52. Ka7! Rb1! 53. Rc4+! Kd7! 54. b7! Ra1+! >>>55. Kb8! Rb1 56. Ra4! Rb2 57. Ra7 Rb1 58. Ka8! Kd6! 59. b8=R! Rc1 >>>60. Rb5 Rc8+! 61. Kb7! Rc1 62. Ra6+ Kd7! 63. Rh6 Rc7+! 64. Kb8 Rc8+! >>>65. Ka7! Rc7+! 66. Rb7! Rxb7+! 67. Kxb7! Ke7! 68. Kc8 Kf7 69. Rd6 >>>Ke7 70. Kc7! Kf7 71. Kd8 Kf8 72. Rd7! Kg8! 73. Ke8! Kh8! 74. Kf7! >>>Kh7! 75. Rd6! Kh8! 76. Rh6#! >> >> >>Which program did you use for this analysis? The ! tag after the optimum >>moves is cool. > >Crafty gives the PV automatically when you input a position in the TBs >(providing you have the necessary files. :) To get the !s, you just type 'egtb >!' at the command line after putting in the position, and it returns the whole >line like that. > >:) Note that there is definitely a one-move 'issue' here. I will look at this later myself... the extra move is likely the result of simply screwing up on the PV it produces as above. I'll run some tests... My first guess is that somehow I followed the wrong path... and the one I followed was one move sub-optimal (this in the display code)...
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