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xr_a_y , I cannot really answer yes to that question ... It may indeed be the case. Are you thinking of a particular parameter ? I thought TT was a good candidate because with the used replacement scheme. I think instead of spending significant time on some idea it may be worth rechecking it: if yo...

I am very happy to announce Minic release 1.00, "anniversary release" :D . This version is not far from 0.99, just little search and eval tweaks and some fixes. Strength shall be around Winter0.6 or Igel1.9.2 UCI shall be working fine now and main options are now available from protocol. Level is no...

Hi hi hi my class ChessPiece still exists but only containing constants and static methods now. Took three years to get there. Can you imagine how many bugs and time I would have saved when I would have taken the right design decision from start. So for beginners who do object oriented programming:...

Sorry, cant be here this time. Have fun.

Big thanks, as always very fun and instructive.

Why would you want to store the score part? A hash move should always be searched first. An age field would be useless on an always-replace (or an under-cut) slot. And two bits would probably be large enough for it, so it could be easily packed with the bound-type flag, (whick also only needs 2 bit...

Vivien, Have you considered that the problem with long TC is not related to hash usage but rather to prunning conditions that are triggered differently in longer controls? I cannot really answer yes to that question ... It may indeed be the case. Are you thinking of a particular parameter ? I thoug...

Sure, a large part of the hash key is completely redundant, as it can only be the index of the entry. Usually storing 32 bits as signature is good enough, and I was told Stockfish even uses only 16 bits. Wasting memory on padding is of course never a good idea. Only or very large or complex variant...

Yes but as the struct is ill-organized there is some padding in the middle. That can be optimized in first place.

I suppose you mean "with only two slots per bucket". True, you don't have much leeway in that case, as it is very important to always store in the TT. You could use undercut replacement, replacing the highest depth of the pair rather than the lowest when the new depth is exactly one less. Or do tha...