- // Increase reduction for cut nodes and moves with a bad history
- if ( (!PvNode && cutNode)
- || ( thisThread->history[pos.piece_on(to_sq(move))][to_sq(move)] < VALUE_ZERO
- && cmh[pos.piece_on(to_sq(move))][to_sq(move)] <= VALUE_ZERO))
- r += ONE_PLY;
-
- // Decrease/increase reduction for moves with a good/bad history
- int rHist = ( thisThread->history[pos.piece_on(to_sq(move))][to_sq(move)]
- + cmh[pos.piece_on(to_sq(move))][to_sq(move)]) / 14980;
- r = std::max(DEPTH_ZERO, r - rHist * ONE_PLY);