Remove quiet move streak

bench 2741847

Author: daniel-monroe

src/search.cpp

@@ -1006,8 +1006,6 @@ Value Search::Worker::search(
         movedPiece = pos.moved_piece(move);
         givesCheck = pos.gives_check(move);
 
-        (ss + 1)->quietMoveStreak = (!capture && !givesCheck) ? (ss->quietMoveStreak + 1) : 0;
-
         // Calculate new depth for this move
         newDepth = depth - 1;
 
@@ -1178,7 +1176,7 @@ Value Search::Worker::search(
 
         // These reduction adjustments have no proven non-linear scaling
 
-        r += 650;  // Base reduction offset to compensate for other tweaks
+        r += 1000;  // Base reduction offset to compensate for other tweaks
         r -= moveCount * 69;
         r -= std::abs(correctionValue) / 27160;
 
@@ -1194,8 +1192,6 @@ Value Search::Worker::search(
         if ((ss + 1)->cutoffCnt > 2)
             r += 935 + allNode * 763;
 
-        r += (ss + 1)->quietMoveStreak * 51;
-
         // For first picked move (ttMove) reduce reduction
         if (move == ttData.move)
             r -= 2043;

src/search.h

@@ -75,7 +75,6 @@ struct Stack {
     bool                        ttHit;
     int                         cutoffCnt;
     int                         reduction;
-    int                         quietMoveStreak;
 };