Remove offset in thread redistribution scheme.

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 3f89c0400c24d2f54e9aee6fc52eac7a5f5cd56c..7cb53fbf32064a53ff69cd97e774c56233dcd32e 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -331,7 +331,7 @@ void Thread::search() {
       if (idx > 0)
       {
           int i = (idx - 1) % 20;
-          if (((rootDepth / ONE_PLY + rootPos.game_ply() + SkipPhase[i]) / SkipSize[i]) % 2)
+          if (((rootDepth / ONE_PLY + SkipPhase[i]) / SkipSize[i]) % 2)
               continue;  // Retry with an incremented rootDepth
       }
 
@@ -1155,8 +1155,8 @@ moves_loop: // When in check, search starts from here
         if (!pos.capture_or_promotion(bestMove))
             update_quiet_stats(pos, ss, bestMove, quietsSearched, quietCount,
                                stat_bonus(depth + (bestValue > beta + PawnValueMg ? ONE_PLY : DEPTH_ZERO)));
-        else
-            update_capture_stats(pos, bestMove, capturesSearched, captureCount, stat_bonus(depth + ONE_PLY));
+
+        update_capture_stats(pos, bestMove, capturesSearched, captureCount, stat_bonus(depth + ONE_PLY));
 
         // Extra penalty for a quiet TT move in previous ply when it gets refuted
         if ((ss-1)->moveCount == 1 && !pos.captured_piece())
@@ -1448,7 +1448,9 @@ moves_loop: // When in check, search starts from here
       CapturePieceToHistory& captureHistory =  pos.this_thread()->captureHistory;
       Piece moved_piece = pos.moved_piece(move);
       PieceType captured = type_of(pos.piece_on(to_sq(move)));
-      captureHistory[moved_piece][to_sq(move)][captured] << bonus;
+
+      if (pos.capture_or_promotion(move))
+          captureHistory[moved_piece][to_sq(move)][captured] << bonus;
 
       // Decrease all the other played capture moves
       for (int i = 0; i < captureCnt; ++i)