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H. G. Muller wrote on Mon, Jul 8, 2019 06:56 AM UTC:

Your diagnosis is entirely correct. Because KingSlayer was originally designed with only (2x) 7 piece types, it initializes the move-generator data for the four variable types from a larger list of all types depending on the army choice. But when 'Traitor promotion' is set it initializes the 5th variable type as a copy of the 4th, in the table for the opponent. But I forgot to flip the orientation. I will add a note to this posting when I have fixed it.

Good that ChessV now gives a memory command. I already had made KingSlayer a bit more robust to not receiving one, by having it interpret memory size 0 as 128KB and launching it with that size, and then check the memory size at the start of every search to see if it is still at 0, and allocating 64MB if it is. But relying on default hash sizes is likely to give rise to unfair use of resources.

[Edit] OK, I uploaded a version (0.1, same link) where the traitor orientation should be fixed. This was a bit tricky, as the initialization also collects all sliding directions of an army, to know from which directions it should expect discovered checks.


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