Crystal 4

[ernst]

Thank you for your work, Joseph.

[ernst]

I will give just one example:

[fen]k7/B3p1p1/PPp1P3/4P2b/p4p1P/P1p2p1K/2P2P2/7B w - - [/fen]

Old crystal mate in 74 instantly, new has no idea at all. Even if sel depth is 147 plies..

No idea at all? Joseph is sharing his work with us for free. Your negativity is appaling.

Engine: Crystal 4 (20480 MB)
by The Stockfish developers
Found 510 tablebases
NNUE evaluation using nn-ac07bd334b62.nnue enabled

61/147 2:12 +151.02++ 1.Kh2 (4.937.355.992) 37177 TB:4.338.235
61/147 2:12 +152.66 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (4.938.043.203) 37176 TB:4.338.758
62/183 2:13 +151.65 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (4.958.802.046) 37172 TB:4.370.487
63/179 2:14 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (4.983.939.196) 37160 TB:4.554.127
64/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.022.587.006) 37156 TB:4.915.365
65/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.022.724.332) 37156 TB:4.916.668
66/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.022.919.224) 37156 TB:4.918.704
67/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.023.074.028) 37157 TB:4.920.376
68/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.023.276.894) 37157 TB:4.922.366
69/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.024.274.376) 37157 TB:4.932.312
70/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.035.998.857) 37168 TB:5.047.944
71/147 2:15 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.039.081.067) 37170 TB:5.077.997
72/147 2:16 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.079.190.248) 37177 TB:5.505.962
73/147 2:25 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.414.866.908) 37174 TB:6.293.628
74/147 2:35 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (5.775.891.546) 37201 TB:6.892.654
75/147 2:58 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (6.568.370.893) 36784 TB:8.957.433
76/147 3:13 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (7.036.932.089) 36398 TB:10.965.620
77/147 3:16 +M74 1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 (7.145.158.842) 36333 TB:11.898.345
best move: Kh3-h2 time: 3:16.656 min n/s: 36.333.471 nodes: 7.145.158.842 TB: 11.898.345