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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

2b2QK1/2r1b3/2BrrNN1/R3R1qp/RnB5/BP4n1/k2Q2BP/1B1rRr2 b - - 0 1 #887

Closed tromp closed 3 years ago

tromp commented 3 years ago

2b2QK1/2r1b3/2BrrNN1/R3R1qp/RnB5/BP4n1/k2Q2BP/1B1rRr2 b - - 0 1

img

Discovered Double Check wx 0 wp 2 wpr 6 wpx 0 maxuwp 2 minopp 0 bx 4 bp 1 bpr 3 bpx 4 maxubp 1 minopp 0

ndc5057 commented 3 years ago

Legal Proof Game

  1. b3 h5 2. a4 b5 3. axb5 Nc6 4. b6 Nb4 5. b7 a5 6. b8=R a4 7. Ra2 a3 8. Rb2 a2 9. c4 a1=R 10. d4 c5 11. dxc5 d5 12. c6 Ba6 13. c7 d4 14. c8=B Qa5 15. e4 d3 16. Kd2 e5 17. Ke3 d2 18. Qe2 d1=R 19. c5 Be7 20. c6 Bd8 21. Bb7 Nf6 22. c7 Nd7 23. c8=B f6 24. f4 Ke7 25. fxe5 Ke6 26. g4 Kf7 27. e6+ Kg6 28. e7 Nc5 29. e8=B+ Kh6 30. g5+ Kh7 31. gxf6 g5 32. f7 g4 33. f8=R g3 34. Nf3 g2 35. Bf7 g1=R 36. e5 Ne4 37. e6 Ng3 38. e7 Ra7 39. e8=Q Kh6 40. Nh4 Kg5 41. Qd2 Kf6 42. Kf4 Be7 43. Kf3 Ke5 44. Qg2 Kd4 45. Re2 Kd3 46. Bd2 Kc2 47. Nc3 Kb2 48. Kf4 Rac1 49. Ne4 Ka2 50. Bfd5 Rc5 51. Ke5 Bd6+ 52. Kf6 Be7+ 53. Kg7 Rh6 54. Kg8 Re6 55. Rf5 Rb5 56. Bbc6 Rc7 57. Bc4 Rd5 58. Re5 Rdd6 59. Nf6 Qa4 60. Re1 Qa5 61. Bfd3 Rf1 62. Qf3 Qa4 63. Bc1 Qa5 64. Ba3 Qa4 65. Bc2 Qa5 66. Qe2 Qa4 67. Bg2 Qa5 68. Ng6 Qa4 69. Bcb7 Qa5 70. Bbc6 Bc8 71. Ra8 Qd5 72. Ra4 Qe4 73. Rea5 Qf4 74. Qf8 Qg4 75. Qd2 Qg5 76. Ree5 Rf2 77. Rhe1 Rf1 78. Bb1+
tromp commented 3 years ago

Thanks, Nick! Verified with https://lichess.org/analysis ...