diff --git a/src/search.cpp b/src/search.cpp index 411befde..390c6b1c 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -1229,8 +1229,9 @@ moves_loop: // When in check, search starts here if (newDepth > d) value = -search(pos, ss+1, -(alpha+1), -alpha, newDepth, !cutNode); - int bonus = value > alpha ? stat_bonus(newDepth) - : -stat_bonus(newDepth); + int bonus = value <= alpha ? -stat_bonus(newDepth) + : value >= beta ? stat_bonus(newDepth) + : 0; update_continuation_histories(ss, movedPiece, to_sq(move), bonus); } @@ -1255,9 +1256,6 @@ moves_loop: // When in check, search starts here (ss+1)->pv[0] = MOVE_NONE; value = -search(pos, ss+1, -beta, -alpha, newDepth, false); - - if (moveCount > 1 && newDepth >= depth && !capture) - update_continuation_histories(ss, movedPiece, to_sq(move), -stat_bonus(newDepth)); } // Step 19. Undo move