Old Critter-1.6a takes a bit to favor Qh8 over Be3, but then sticks with the former:acase wrote: ↑Sun Apr 28, 2019 12:09 pm In this position, the White Queen moves to h8 so White can bring his rook down to h7 with check. This will be difficult for some engines, and easy for others I would suspect. this position is based on the ERET 84 position after making a few moves..
[d]4rn2/1r2pk2/1p1R1pp1/p1q3B1/2b1P1PQ/2P2P2/P3B1KR/8 w - - 0 31
+3.31 31. Qh8 fxg5 32. Rh7+ Nxh7 33. Qxh7+ Kf8 34. Qh6+ Kf7 35. Qxg6+ Kf8 36. Qh6+ Kf7 37. Rc6 Bxe2 38. Qh7+ Kf8 39. Rxc5 bxc5 40. Qf5+ Kg7 41. Qxg5+ Kf8 42. Qf5+ Kg7 43. Qe5+ Kf8 44. Qh8+ Kf7 45. Qh5+ Kf8 46. e5 Rb2 47. Qh8+ Kf7 48. Qh7+ Kf8 49. Kg3 e6 50. f4 Bc4 51. f5 exf5 52. gxf5 Re7 53. Qh8+ Bg8 54. Qf6+ Ke8 55. Qc6+ Kd8 56. Qd6+ Ke8 57. e6 Rb1 58. Qc6+ Kf8 59. Qc8+ Kg7 60. Qxc5 Kf6 61. Qd4+ Kxf5 62. Qd3+ Kf6 63. Qxb1 Rg7+ 64. Kf3 Bxe6 65. Qb6 Rg5 66. Qd8+ Kg6 67. a4 Rd5 68. Qe7 Kf5 69. Qf8+ Kg6 70. Ke4 Rg5 71. Qd8 Rf5 72. Kd4 Rg5 73. Qe8+ Kf6 74. Qf8+ Bf7 75. Qd6+ Be6 76. Qf4+ Kg6 77. Ke3 Bb3 78. Qe4+ Kf6 (depth 50, 0:05:59)
Qh8 looks the easiest move to the human eye. The only reply for black seems to be fxg5. And it's only after that, that calculation is needed.acase wrote: ↑Sun Apr 28, 2019 12:09 pm In this position, the White Queen moves to h8 so White can bring his rook down to h7 with check. This will be difficult for some engines, and easy for others I would suspect. this position is based on the ERET 84 position after making a few moves..
[d]4rn2/1r2pk2/1p1R1pp1/p1q3B1/2b1P1PQ/2P2P2/P3B1KR/8 w - - 0 31
+4.11 31. Qh8 fxg5 32. Rh7+ Nxh7 33. Qxh7+ Kf8 34. Qh6+ Kf7 35. Qxg6+ Kf8 36. Qh6+ Kf7 37. Rc6 Bxe2 38. Qh7+ Kf8 39. Rxc5 bxc5 40. Qf5+ Kg7 41. Qxg5+ Kf8 42. Qf5+ Kg7 43. Qe5+ Kf8 44. Qh8+ Kf7 45. Qh5+ Kf8 46. e5 Rb6 47. Qh8+ Kf7 48. Qh7+ Kf8 49. g5 Bc4 50. g6 Reb8 51. g7+ Ke8 52. g8=Q+ Bxg8 53. Qxg8+ Kd7 54. Qd5+ Ke8 55. f4 e6 56. Qxc5 Kd7 57. Qxa5 Rc6 58. f5 exf5 59. Qd5+ Kc7 60. Qf7+ Kb6 61. e6 Rxc3 62. Qf6 Rcc8 63. Qd4+ Kb7 64. Qd5+ Ka6 65. e7 Kb6 66. Qd6+ Kb7 67. Qd7+ Ka6 68. Kf3 Re8 69. Kf4 Rg8 70. a4 Rge8 71. Qxf5 Kb6 72. Qb5+ Kc7 73. Qe5+ Kc6 74. Qe6+ Kb7 75. Kg5 Ka7 76. Qd7+ Kb6 77. Kg6 Rec8 78. Qb5+ Kc7 79. Qe5+ Kb6 80. Kf7 Rg8 81. Qb5+ Ka7 82. Qc5+ Ka6 83. Kf6 Rgc8 84. Qe5 Ka7 85. Qd4+ Ka6 86. Ke6 Rc6+ 87. Kf5 Rcc8 88. Qe5 Rh8 89. Qd6+ Ka5 90. Qd7 Ka6 91. Kf6 Kb6 92. Qb5+ Kc7 93. Qc5+ Kb7 (depth 65, 3:32:51)zullil wrote: ↑Sun Apr 28, 2019 3:03 pm+3.31 31. Qh8 fxg5 32. Rh7+ Nxh7 33. Qxh7+ Kf8 34. Qh6+ Kf7 35. Qxg6+ Kf8 36. Qh6+ Kf7 37. Rc6 Bxe2 38. Qh7+ Kf8 39. Rxc5 bxc5 40. Qf5+ Kg7 41. Qxg5+ Kf8 42. Qf5+ Kg7 43. Qe5+ Kf8 44. Qh8+ Kf7 45. Qh5+ Kf8 46. e5 Rb2 47. Qh8+ Kf7 48. Qh7+ Kf8 49. Kg3 e6 50. f4 Bc4 51. f5 exf5 52. gxf5 Re7 53. Qh8+ Bg8 54. Qf6+ Ke8 55. Qc6+ Kd8 56. Qd6+ Ke8 57. e6 Rb1 58. Qc6+ Kf8 59. Qc8+ Kg7 60. Qxc5 Kf6 61. Qd4+ Kxf5 62. Qd3+ Kf6 63. Qxb1 Rg7+ 64. Kf3 Bxe6 65. Qb6 Rg5 66. Qd8+ Kg6 67. a4 Rd5 68. Qe7 Kf5 69. Qf8+ Kg6 70. Ke4 Rg5 71. Qd8 Rf5 72. Kd4 Rg5 73. Qe8+ Kf6 74. Qf8+ Bf7 75. Qd6+ Be6 76. Qf4+ Kg6 77. Ke3 Bb3 78. Qe4+ Kf6 (depth 50, 0:05:59)
acase wrote: ↑Sun Apr 28, 2019 12:09 pm In this position, the White Queen moves to h8 so White can bring his rook down to h7 with check. This will be difficult for some engines, and easy for others I would suspect. this position is based on the ERET 84 position after making a few moves..
[d]4rn2/1r2pk2/1p1R1pp1/p1q3B1/2b1P1PQ/2P2P2/P3B1KR/8 w - - 0 31
Code: Select all
dep score nodes time (not shown: tbhits knps seldep)
46 +2.33! 21.4G 14:30.15 Qh8!
46 +2.21? 21.1G 14:20.40 Qh8 fxg5?
45 +2.26 17.6G 12:07.51 Qh8 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ Kf7 Qxg6+ Kf8 Qh6+ Kf7 Rc6 Bxe2 Qh7+ Kf8 Rxc5 bxc5 Qf5+ Kg7 Qxg5+ Kf8 Qf5+ Kg7 Qe5+ Kf8 Qh8+ Kf7 Qh5+ Kf8 e5 Rb2 Qh8+ Kf7 Qh7+ Kf8 Kg3 e6 f4 Bxg4 Kxg4 Re7 Qh8+ Kf7 a4 Rg2+ Kf3 Rg1 Ke4 Rf1 Ke3 c
44 +2.14 16.1G 11:10.51 Qh8 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ Kf7 Qxg6+ Kf8 Qh6+ Kf7 Rc6 Bxe2 Qh7+ Kf8 Rxc5 bxc5 Qf5+ Kg7 Qxg5+ Kf8 Qf5+ Kg7 Qe5+ Kf8 Qh8+ Kf7 Qh5+ Kf8 e5 Rb6 Qf5+ Kg7 e6 Bxf3+ Kg3 Rg8 Qf7+ Kh8 Kxf3 Rg7 Qf5 Kg8 a4 Rb8 Kg3 Rf8 Qxc5 Rf6 Qxa5
44 +1.99! 15.5G 10:44.13 Qh8!
44 +1.88? 14.9G 10:21.62 Qh8 fxg5?
43 +1.93 14.6G 10:10.30 Qh8 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ Kf7 Qxg6+ Kf8 Qh6+ Kf7 Rc6 Bxe2 Qh7+ Kf8 Rxc5 bxc5 Qf5+ Kg7 Qxg5+ Kf8 Qf5+ Kg7 Qe5+ Kf8 Qh8+ Kf7 Qh5+ Kf8 e5 Rb2 Qh8+ Kf7 Qh7+ Kf8 Kg3 e6 f4 Bc4 f5 exf5 gxf5 a4 e6 Rxe6 fxe6 Bxe6 a3 Bb3 Qe4 c4
43 +1.73! 14.3G 9:58.63 Qh8!
43 +1.66? 14.0G 9:44.60 Qh8 fxg5?
43 +1.71? 13.5G 9:25.81 Qh8 fxg5?
42 +1.76 13.4G 9:22.45 Qh8 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ Kf7 Qxg6+ Kf8 Qh6+ Kf7 Rc6 Bxe2 Qh7+ Kf8 Rxc5 bxc5 Qf5+ Kg7 Qxg5+ Kf8 Qf5+ Kg7 Qe5+ Kf8 Qh8+ Kf7 Qh5+ Kf8 e5 Rb2 Qh8+ Kf7 Qh7+ Kf8 Kg3 e6 f4 Bf1 f5 exf5 gxf5 Bc4 Qh6+ Kf7 Qg6+ Kf8 f6 Rxe5 Qg7+ K
42 +1.74! 13.4G 9:19.96 Qh8!
42 +1.55! 12.7G 8:54.31 Qh8!
42 +1.45? 12.4G 8:40.52 Qh8 fxg5?
41 +1.50 12.4G 8:39.03 Qh8 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ Kf7 Qxg6+ Kf8 Qh6+ Kf7 Rc6 Bxe2 Qh7+ Kf8 Rxc5 bxc5 Qf5+ Kg7 Qxg5+ Kf8 Qf5+ Kg7 Qe5+ Kf8 Qh8+ Kf7 Qh5+ Kf8 e5 Rb2 Qh8+ Kf7 Qh7+ Kf8 Kg3 e6 f4 Bxg4 Kxg4 Re7 Qh8+ Kf7 a4 Rg2+ Kf3 Rg1 Ke4 Rf1 Kd3 Rf
41 +1.27! 12.0G 8:26.38 Qh8!
41 +1.06! 11.9G 8:20.71 Qh8!
41 +1.00? 11.8G 8:15.56 Qh8 fxg5?
41 +1.05? 11.8G 8:13.91 Qh8 fxg5?
40 +1.10 11.7G 8:12.12 Qh8 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ Kf7 Qxg6+ Kf8 Qh6+ Kf7 Rc6 Bxe2 Qh7+ Kf8 Rxc5 bxc5 Qf5+ Kg7 Qxg5+ Kf8 Qf5+ Kg7 Qe5+ Kf8 Qh8+ Kf7 Qh5+ Kf8 e5 Rb2 Qh8+ Kf7 Qh7+ Kf8 Kg3 e6 f4 Bxg4 Kxg4 Re7 Qh8+ Kf7 Kf3 a4 Qf6+ Ke8 f5 exf5 e6 Reb
40 +0.70! 11.6G 8:05.93 Qh8!
40 +0.12! 10.0G 7:01.58 Be3 Qc7!
40 +0.15! 10.0G 7:01.44 Qh8!
40 +0.28! 10.0G 7:00.92 Qh8!
40 +0.30! 10.0G 7:00.41 Qh8!
40 +0.48! 9.96G 6:58.41 Qh8!
40 +0.30! 8.46G 5:53.88 Be3!
40 +0.23? 8.04G 5:36.47 Be3 Qc7?
40 +0.31? 7.19G 5:00.02 Be3 Qc7?
40 +0.36? 6.84G 4:45.09 Be3 Qc7?
39 +0.41 5.54G 3:50.72 Be3 Qc7 Rd2 Bxe2 Rxe2 Qc4 Kg3 Qxc3 Qh8 Rd7 Bd2 Qe5+ Bf4 Qxf4+ Kxf4 Ne6+ Ke3 Rxh8 Rxh8 Rc7 Rh7+ Ke8 Kd2 Rd7+ Kc1 Rd3 Rb2 Rc3+ Kd1 Rxf3 Rxb6 Ng5 Rh8+ Kf7 e5 fxe5 Rb5 Ke6 Rxa5 Rf4 Ra6+ Kf7 Raa8 Ke6 Rhe8 Rxg4 Ra7 Rg2 a4 Ra2 Rexe7+ K
39 +0.46! 5.21G 3:36.89 Be3!