X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=671ac489e82ff595230697eba689f6c77546f08f;hp=67339ed78980501b38920d516fcb0dd03a0558ee;hb=208c53df0fc289466def7deae58f687957efb734;hpb=1ea488d34c0b6a03fa3d89d289fe72fd1408cafd

diff --git a/src/search.cpp b/src/search.cpp
index 67339ed7..671ac489 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -670,7 +670,7 @@ namespace {
     ttPv = PvNode || (ttHit && tte->is_pv());
     formerPv = ttPv && !PvNode;
 
-    if (ttPv && depth > 12 && ss->ply - 1 < MAX_LPH && !pos.captured_piece() && is_ok((ss-1)->currentMove))
+    if (ttPv && depth > 12 && ss->ply - 1 < MAX_LPH && !priorCapture && is_ok((ss-1)->currentMove))
         thisThread->lowPlyHistory[ss->ply - 1][from_to((ss-1)->currentMove)] << stat_bonus(depth - 5);
 
     // thisThread->ttHitAverage can be used to approximate the running average of ttHit
@@ -1026,6 +1026,7 @@ moves_loop: // When in check, search starts from here
               if (   !givesCheck
                   && lmrDepth < 6
                   && !(PvNode && abs(bestValue) < 2)
+                  && PieceValue[MG][type_of(movedPiece)] >= PieceValue[MG][type_of(pos.piece_on(to_sq(move)))]
                   && !ss->inCheck
                   && ss->staticEval + 267 + 391 * lmrDepth + PieceValue[MG][type_of(pos.piece_on(to_sq(move)))] <= alpha)
                   continue;
@@ -1186,7 +1187,7 @@ moves_loop: // When in check, search starts from here
               // hence break make_move(). (~2 Elo)
               else if (    type_of(move) == NORMAL
                        && !pos.see_ge(reverse_move(move)))
-                  r -= 2 + ttPv;
+                  r -= 2 + ttPv - (type_of(movedPiece) == PAWN);
 
               ss->statScore =  thisThread->mainHistory[us][from_to(move)]
                              + (*contHist[0])[movedPiece][to_sq(move)]