Update search.cpp

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 7875f0345f3d9d9f4c0268b7d613689f7cd85c7e..1a4f654d10539a998cc248a5fa5c0c2d2f0eade9 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -734,10 +734,10 @@ namespace {
     // Step 9. Null move search with verification search (~40 Elo)
     if (   !PvNode
         && (ss-1)->currentMove != MOVE_NULL
-        && (ss-1)->statScore < 30000
+        && (ss-1)->statScore < 22500
         &&  eval >= beta
         &&  ss->staticEval >= beta - 36 * depth / ONE_PLY + 225
-        && !ss->excludedMove
+        && !excludedMove
         &&  pos.non_pawn_material(pos.side_to_move())
         && (ss->ply >= thisThread->nmp_ply || ss->ply % 2 != thisThread->nmp_odd))
     {
@@ -1153,7 +1153,7 @@ moves_loop: // When in check, search starts from here
             update_continuation_histories(ss-1, pos.piece_on(prevSq), prevSq, -stat_bonus(depth + ONE_PLY));
     }
     // Bonus for prior countermove that caused the fail low
-    else if (    depth >= 3 * ONE_PLY
+    else if (   (depth >= 3 * ONE_PLY || PvNode)
              && !pos.captured_piece()
              && is_ok((ss-1)->currentMove))
         update_continuation_histories(ss-1, pos.piece_on(prevSq), prevSq, stat_bonus(depth));