Removing inCheck condition for counter move bonus

STC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 20206 W: 3946 L: 3823 D:

LTC:
LLR: 3.10 (-2.94,2.94) [-3.00,1.00]
Total: 25004 W: 3512 L: 3390 D: 18102

Bench: 8172428

diff --git a/src/search.cpp b/src/search.cpp
index a36601bffc48f6965652694e886747c4a29a838a..064df0ca11fafc5b5b100eb23f8a61fd48565e76 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -815,7 +815,6 @@ namespace {
 
 moves_loop: // When in check search starts from here
 
 
 moves_loop: // When in check search starts from here
 

-    Square prevSq = to_sq((ss-1)->currentMove);

     const CounterMoveStats* cmh  = (ss-1)->counterMoves;
     const CounterMoveStats* fmh  = (ss-2)->counterMoves;
     const CounterMoveStats* fmh2 = (ss-4)->counterMoves;
     const CounterMoveStats* cmh  = (ss-1)->counterMoves;
     const CounterMoveStats* fmh  = (ss-2)->counterMoves;
     const CounterMoveStats* fmh2 = (ss-4)->counterMoves;


@@ -1106,10 +1105,10 @@ moves_loop: // When in check search starts from here
     // Bonus for prior countermove that caused the fail low
     else if (    depth >= 3 * ONE_PLY
              && !bestMove
     // Bonus for prior countermove that caused the fail low
     else if (    depth >= 3 * ONE_PLY
              && !bestMove

-             && !inCheck

              && !pos.captured_piece_type()
              && is_ok((ss-1)->currentMove))
     {
              && !pos.captured_piece_type()
              && is_ok((ss-1)->currentMove))
     {

+        Square prevSq = to_sq((ss-1)->currentMove);

         Value bonus = Value((depth / ONE_PLY) * (depth / ONE_PLY) + 2 * depth / ONE_PLY - 2);
         if ((ss-2)->counterMoves)
             (ss-2)->counterMoves->update(pos.piece_on(prevSq), prevSq, bonus);
         Value bonus = Value((depth / ONE_PLY) * (depth / ONE_PLY) + 2 * depth / ONE_PLY - 2);
         if ((ss-2)->counterMoves)
             (ss-2)->counterMoves->update(pos.piece_on(prevSq), prevSq, bonus);