Looking at the recent patches[1] for Stockfish it seems like a rather true statement? Most of the patches are related to how it evaluates a position; not how it

Looking at the recent patches[1] for Stockfish it seems like a rather true statement? Most of the patches are related to how it evaluates a position; not how it prunes/searches the tree of possible moves. Here's one random test which showed improvement: https://github.com/Vizvezdenec/Stockfish/compare/5c2fbcd...51e1b4b https://github.com/Vizvezdenec/Stockfish/compare/5c2fbcd...5... Bitboard b1 = double_pawn_attacks_bb<Them>(nonPawnEnemies) & b & attackedBy[Us][PAWN]; score += make_score(90, 72) * popcount(b1); And look at all of the magic numbers and logic in evaluate.cpp: https://github.com/official-stockfish/Stockfish/blob/master/src/evaluate.cpp https://github.com/official-stockfish/Stockfish/blob/master/... [1]: http://tests.stockfishchess.org/tests http://tests.stockfishchess.org/tests