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But I thought that singular extension aimed at looking if in the current situation there is only one good move (and then extend). If depth of the tt move is enough, and we trust it, I was thinking that at least ttscore-pawnValue was the bound to use (in a fail soft framework). Maybe all those very g...

In Xiphos, one can read // singular extensions if (depth >= SE_DEPTH && !skip_move && _m_eq(move, hash_move) && !root_node && !_is_mate_score(hash_score) && hash_data.bound == HASH_LOWER_BOUND && hash_data.depth >= depth - 3) { beta_cut = hash_score - depth; score = pvs(sd, 0, 0, beta_cut - 1, beta_...

0.37 was a +35 versus 0.34
but the 0.40 is +70 versus 0.37 thanks to pruning even in end-game
Should be near 2570 now

Minic 0.39 https://github.com/tryingsomestuff/Minic/releases (bug fix, please do not use 0.38)

Hi Sergio,

Minic 0.38 can be used (just released).

Thanks

Hi,

if not too late, Minic 0.38 can be used instead of 0.34.

Thanks a lot !

If you are right, I guess some better engine would benefit from not storing alpha_bound also ?

On the same subject, I notice Minic is weaker if I put alpha_bound in TT. So I only insert exact and beta_bound inside TT.
Don't really know why ...

Ok how do you "detect" draw score (==contemp ?)