X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=0261a481beb4c5f187e230384859ba92d9de4d47;hp=8b6e1690404bf5317f3dab7bf8fde61c4fc802d7;hb=7396c08b795191d954528d687e84d7ff6dbe7a3b;hpb=3d10cfcdd22b16d6bd2801eeecbe16f280eb6e27 diff --git a/src/search.cpp b/src/search.cpp index 8b6e1690..0261a481 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -915,16 +915,16 @@ moves_loop: // When in check search starts from here if (moveCountPruning) continue; + predictedDepth = std::max(newDepth - reduction(improving, depth, moveCount), DEPTH_ZERO); + // Countermoves based pruning - if ( depth <= 4 * ONE_PLY + if ( predictedDepth < 3 * ONE_PLY && move != ss->killers[0] && (!cmh || (*cmh )[moved_piece][to_sq(move)] < VALUE_ZERO) && (!fmh || (*fmh )[moved_piece][to_sq(move)] < VALUE_ZERO) && (!fmh2 || (*fmh2)[moved_piece][to_sq(move)] < VALUE_ZERO || (cmh && fmh))) continue; - predictedDepth = std::max(newDepth - reduction(improving, depth, moveCount), DEPTH_ZERO); - // Futility pruning: parent node if ( predictedDepth < 7 * ONE_PLY && ss->staticEval + 256 + 200 * predictedDepth / ONE_PLY <= alpha) @@ -1397,7 +1397,7 @@ moves_loop: // When in check search starts from here ss->killers[1] = ss->killers[0]; ss->killers[0] = move; } - + Color c = pos.side_to_move(); Value bonus = Value((depth / ONE_PLY) * (depth / ONE_PLY) + 2 * depth / ONE_PLY - 2);