tromp / ChessPositionRanking

Software suite for ranking chess positions and accurately estimating the number of legal chess positions
MIT License
138 stars 7 forks source link

8/R2q2b1/1NN1n3/R3B2R/pb4rk/N1r1pbnP/KPQ2RQ1/1Bq2Q1N b - - 0 1 #893

Closed tromp closed 3 years ago

tromp commented 3 years ago

8/R2q2b1/1NN1n3/R3B2R/pb4rk/N1r1pbnP/KPQ2RQ1/1Bq2Q1N b - - 0 1

img

Single Check wx 0 wp 2 wpr 6 wpx 0 maxuwp 2 minopp 0 bx 4 bp 2 bpr 2 bpx 4 maxubp 2 minopp 0

Legal with axpb b8Q cxpd c1q d8Q d8R expf f8R f8N gxph g1b h8N

Proof Game Requested.

GeoffreyY commented 3 years ago
  1. a4 b5 2. axb5 Nc6 3. b6 Na5 4. b7 Nc6 5. b8=Q d5 6. c4 Na5 7. cxd5 c5 8. d3 c4 9. Bd2 c3 10. Be3 c2 11. Bd2 c1=Q 12. d6 Qdc7 13. d7+ Kd8 14. d4 Qb6 15. d5 Qb5 16. Qf4 Qa4 17. Qf5 Kc7 18. d8=Q+ Kb7 19. Qd6 a6 20. Qh6 Nb3 21. d6 a5 22. d7 Qb4 23. d8=R a4 24. Qfh5 f5 25. e4 e5 26. exf5 e4 27. f6 Bc5 28. f7 e3 29. f8=R Ne7 30. f4 Qb5 31. f5 Nd4 32. f6 Nec6 33. Rfe8 Na7 34. f7 Nac6 35. f8=N Na7 36. g4 Nac6 37. g5 Na7 38. g6 Nac6 39. gxh7 g5 40. h3 Rg8 41. h8=N g4 42. Nf3 g3 43. Ne5 g2 44. Ng4 g1=B 45. Nf2 Kc7 46. Rh2 Bd7 47. Nh1 Rb8 48. Qf4+ Ne5 49. Bd3 Kd6 50. Qf1 Kd5 51. Qg4 Qc6 52. Rf2 Bh2 53. Ne6 Rb7 54. Ra8 Rc7 55. Ra3 Rb7 56. Rb3 Nf5 57. Qgg2+ Nf3+ 58. Ke2 Ke5 59. Na3 Bb4 60. Bc3+ Kd6 61. Be5+ Kd5 62. Bb1+ Nd4+ 63. Kd3 Qd6 64. Rc3 Nf5 65. Rcc2 Bc5 66. Kc3+ Ke4 67. Nb5 Bb6 68. Ned4 Qe6 69. Kb4 Rb8 70. Ka3 Qd6+ 71. Ka2 Bc5 72. Na3 Bb4 73. Nc6 Rc8 74. Na5 Rc3 75. N5c4 Ng3 76. Nb6 Kf5 77. Ra5 Kg5 78. Nf7+ Kh4 79. Rea8 Rg4 80. Rcd2 Bc6 81. Rd4 Ng5 82. Qc2 Ne6 83. Nd8 Bf3 84. Nc6 Qd7 85. R8a7 Nf5 86. Bd6 Be5 87. Bc7 Bg7 88. Be5 Ng3 89. Rf4 Qe7 90. Rf5 Qd7 91. Rh5+
tromp commented 3 years ago

Verified at https://lichess.org/analysis Thanks, Geoffrey!