weren't scored at all before, which caused losses.
No pruning for passed pawn pushes. Less aggressive main search futility pruning. No more LMR on losing captures. One ply less on IID.
- Made history updating more optimized. - Made q-search futility pruning more agressive, but limited to non-PV. - Limited number of checking moves generated in q-search. - Changed razoring to be after null move (and made less aggressive). - Made use of evaluation lazy. - Increased futility pruning depth. - LMR now on losing captures as well. - LMR in PV nodes as well.
…Valid, but it's not worth it putting them in killers anyway.