I have another game with Fairy-Max 5.0b, when it is stalling. It is quite a large game, perhaps it can help you:hgm wrote: ↑Mon Nov 09, 2020 11:29 pm This should be cured in version 5, which invalidates its hash table before any search where the use of null move was switched.
The latest source of Fairy-Max can be found in my git repository:
http://hgm.nubati.net/cgi-bin/gitweb.cgi
Just download the latest snapshot of the main branch. Same for KingSlayer / simple.
[pgn]
[Event "?"]
[Site "?"]
[Date "2020.11.11"]
[Round "2296"]
[White "Fairy-Max 5.0b"]
[Black "OliThink 4.1.3"]
[Result "0-1"]
[ECO "A13"]
[GameDuration "00:01:18"]
[GameEndTime "2020-11-11T12:16:22.495 CET"]
[GameStartTime "2020-11-11T12:15:03.676 CET"]
[Opening "English Opening"]
[PlyCount "218"]
[Termination "stalled connection"]
[TimeControl "40/12"]
1. c4 {book} e6 {book} 2. Nc3 {book} c6 {book} 3. b3 {book} d5 {book}
4. f4 {-0.04/6 0.26s} dxc4 {+0.46/8 0.28s} 5. bxc4 {-0.23/6 0.24s}
Bd6 {+0.44/8 0.28s} 6. Nh3 {-0.22/6 0.19s} e5 {+1.14/9 0.23s}
7. fxe5 {-0.23/7 0.35s} Bxe5 {+0.89/8 0.18s} 8. Qb3 {-0.24/6 0.27s}
Nd7 {+1.13/7 0.27s} 9. Nf2 {-0.02/5 0.21s} Nc5 {+1.12/8 0.42s}
10. Qb4 {-0.06/6 0.24s} Bd6 {+0.91/8 0.45s} 11. Qb1 {-0.09/6 0.20s}
Nf6 {+1.15/7 0.25s} 12. d4 {-0.15/6 0.17s} Ne6 {+1.07/7 0.22s}
13. Be3 {-0.06/7 0.99s} Qa5 {+1.15/6 0.17s} 14. Qb3 {-0.20/6 0.26s}
c5 {+1.15/6 0.17s} 15. Qb5+ {+0.45/9 0.38s} Qxb5 {+0.73/9 0.23s}
16. Nxb5 {+0.66/8 0.22s} Ke7 {+0.52/9 0.28s} 17. Nxd6 {+1.10/8 0.17s}
Kxd6 {+0.45/9 0.24s} 18. d5 {+0.90/8 0.39s} Nd4 {+0.50/8 0.25s}
19. O-O-O {+0.97/7 0.17s} Ke7 {+0.47/7 0.18s} 20. Bxd4 {+0.82/7 0.22s}
cxd4 {-0.23/10 0.32s} 21. Rxd4 {+0.92/8 0.20s} h5 {-0.31/9 0.32s}
22. d6+ {+1.59/7 0.18s} Ke6 {-0.40/8 0.31s} 23. Nh3 {+1.52/7 0.22s}
Ke5 {+0.39/9 0.31s} 24. e3 {+1.51/7 0.24s} Bxh3 {+0.20/9 0.30s}
25. gxh3 {+1.65/8 1.0s} Ne4 {+0.05/8 0.21s} 26. d7 {+2.34/7 0.17s}
Nd6 {-0.02/7 0.16s} 27. Bg2 {+2.63/7 0.15s} Nf5 {-1.02/7 0.15s}
28. Re4+ {+2.73/7 0.16s} Kf6 {-1.25/7 0.17s} 29. Rf4 {+3.10/8 0.15s}
g5 {-1.49/8 0.19s} 30. Rf2 {+3.12/9 0.67s} Ke6 {-1.69/7 0.16s}
31. Bd5+ {+2.96/8 0.69s} Ke5 {-1.11/6 0.098s} 32. Rhf1 {+2.69/8 0.51s}
Nd6 {-0.90/7 0.19s} 33. Bxf7 {+2.71/8 0.38s} Rh7 {-0.59/7 0.12s}
34. Rf6 {+2.81/8 0.12s} Nxf7 {-0.57/8 0.13s} 35. R1f5+ {+3.12/9 0.13s} Ke4
36. Rxf7 {+2.69/10 0.36s} Rxf7 {-0.51/8 0.15s} 37. Rxf7 {+2.76/10 0.14s}
Rd8 {-0.52/8 0.20s} 38. Re7+ {+2.24/10 0.31s} Kf5 {-0.53/7 0.12s}
39. e4+ {+0.91/9 0.10s} Kf6 {0.00/8 0.11s} 40. Re8 {+0.86/11 0.10s}
Rxd7 {+0.50/8 0.13s} 41. e5+ {+0.86/10 0.19s} Kf5 {+0.81/8 0.42s}
42. e6 {+0.23/10 0.54s} Rd4 {+0.51/9 0.42s} 43. e7 {+0.78/10 0.26s}
Rxc4+ {+0.51/8 0.31s} 44. Kd2 {+0.83/10 0.36s} Kf6 {+0.45/8 0.24s}
45. Rb8 {+0.72/11 0.19s} Kxe7 {+0.41/8 0.57s} 46. Rxb7+ {+0.69/10 0.29s}
Kf6 {+0.46/8 0.37s} 47. Rxa7 {+0.74/10 0.45s} Rd4+ {+0.42/8 0.30s}
48. Ke2 {+0.73/10 0.31s} Rb4 {+0.41/8 0.21s} 49. Ra6+ {+0.68/10 0.27s}
Kf5 {+0.30/8 0.23s} 50. Ra5+ {+0.66/10 0.35s} Kf4 {+0.20/9 0.51s}
51. Kf1 {+0.65/10 0.21s} Rb2 {+0.39/9 0.41s} 52. Kg1 {+0.65/11 0.24s}
Rc2 {+0.33/9 0.39s} 53. Ra4+ {+0.75/11 0.27s} Ke3 {+0.28/8 0.17s}
54. h4 {+0.77/11 0.23s} g4 {+0.11/9 0.30s} 55. Ra7 {+0.74/11 0.32s}
Kd4 {+0.15/8 0.16s} 56. a4 {+0.86/10 0.25s} Ra2 {+0.13/8 0.16s}
57. a5 {+0.80/11 0.49s} Ra3 {+0.10/8 0.20s} 58. Kf2 {+0.87/10 0.26s}
Rh3 {+0.20/8 0.17s} 59. Kg2 {+0.79/11 0.20s} Rxh4 {+0.22/9 0.31s}
60. a6 {+1.21/10 0.17s} Rh3 {+0.22/9 0.33s} 61. Rh7 {+0.78/10 0.20s}
Ke4 {+0.28/9 0.45s} 62. a7 {+0.80/10 0.21s} Ra3 {+0.28/7 0.19s}
63. Kf2 {+0.80/10 0.23s} Kf4 {+0.22/7 0.12s} 64. Rf7+ {+0.77/9 0.17s}
Ke5 {+0.28/7 0.23s} 65. Rd7 {+0.70/9 0.23s} h4 {+0.28/7 0.13s}
66. Re7+ {+0.69/11 0.35s} Kf6 {+0.26/7 0.28s} 67. Rb7 {+0.65/11 0.64s}
Ke6 {+0.26/7 0.20s} 68. Rh7 {+0.66/10 0.17s} Kf5 {+0.26/7 0.15s}
69. Rf7+ {+0.67/11 0.21s} Ke4 {+0.30/7 0.12s} 70. Re7+ {+0.69/11 0.17s}
Kd5 {+0.30/7 0.30s} 71. Rg7 {+0.66/10 0.42s} h3 {+0.30/8 0.31s}
72. Rc7 {-0.45/11 0.33s} Kd6 {+0.36/8 0.34s} 73. Rg7 {-0.50/11 0.16s}
Kc6 {+0.37/8 0.32s} 74. Rf7 {+0.03/11 0.26s} Kb6 {+0.45/8 0.30s}
75. Rh7 {+0.02/11 0.27s} Kc5 {+0.26/8 0.27s} 76. Re7 {+0.04/11 0.23s}
Kd4 {+0.26/7 0.17s} 77. Rc7 {+0.63/12 0.46s} Kd5 {+0.26/7 0.13s}
78. Ke2 {+0.61/11 0.16s} Kd6 {+0.26/7 0.090s} 79. Rf7 {+0.07/11 0.22s}
Ke6 {+0.26/8 0.20s} 80. Rg7 {+0.08/11 0.16s} Kf6 {+0.26/8 0.20s}
81. Rh7 {+0.61/11 0.32s} Ke5 {+0.20/8 0.38s} 82. Kd2 {+0.08/11 0.41s}
Kd4 {+0.28/8 0.58s} 83. Rg7 {+0.07/11 0.35s} Ra2+ {+0.43/8 0.34s}
84. Kc1 {+0.04/12 0.31s} Kc5 {+0.35/8 0.37s} 85. Kd1 {+0.03/11 0.21s}
Kb6 {+0.80/8 0.32s} 86. Ke1 {+0.07/12 0.29s} Rxa7 {+0.55/8 0.28s}
87. Rxa7 {+0.73/14 0.29s} Kxa7 {-0.66/13 0.29s} 88. Kf2 {+1.24/20 0.19s}
Kb8 {-1.08/17 0.47s} 89. Kg3 {+1.33/20 0.24s} Kc7 {-1.23/15 0.21s}
90. Kxg4 {+1.44/21 0.18s} Kd8 {-1.29/15 0.47s} 91. Kxh3 {+1.39/24 0.29s}
Ke7 {-1.49/16 0.51s} 92. Kg4 {+0.91/18 0.19s} Kf8 {-1.48/15 0.25s}
93. h4 {+0.76/17 0.24s} Kg8 {-1.64/16 0.28s} 94. Kf4 {+1.28/17 0.20s}
Kf7 {-1.64/16 0.27s} 95. Ke3 {+0.32/17 0.19s} Kg7 {-0.86/13 0.30s}
96. Kf3 {+0.18/18 0.39s} Kg6 {0.00/13 0.23s} 97. Kf2 {+0.18/17 0.59s}
Kh7 {-0.66/14 0.21s} 98. Kg3 {+1.27/18 0.23s} Kg6 {-1.64/17 0.20s}
99. Kg4 {+0.23/16 0.35s} Kh7 {-1.64/17 0.21s} 100. Kh5 {+0.20/19 1.2s}
Kg7 {-1.64/19 0.27s} 101. Kg5 {+0.52/20 0.20s} Kh8 {-1.64/18 0.33s}
102. Kh6 {+1.12/19 0.18s} Kg8 103. Kg6 {+0.26/18 0.18s} Kf8 {-1.64/17 0.37s}
104. h5 {+0.52/18 0.18s} Kg8 {-1.64/17 0.32s} 105. Kf6 {+0.40/19 0.19s}
Kh8 {-1.64/18 0.32s} 106. Kf5 {+0.11/19 0.22s} Kg8 {-1.64/18 0.35s}
107. Kf4 {+0.51/16 0.20s} Kf8 {-1.64/16 0.33s} 108. Kf3 {+0.09/15 0.34s}
Ke8 {-1.64/15 0.13s} 109. Kf2 {+0.07/15 0.19s}
Kf7 {-1.64/14 0.19s, White's connection stalls} 0-1
[/pgn]