temp

TerjeKir · Mar 3, 2024 · e72aef2 · e72aef2
1 parent 990c53a
commit e72aef2
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Showing 3 changed files with 5 additions and 4 deletions.
diff --git a/src/Makefile b/src/Makefile
@@ -31,7 +31,7 @@ LIBS   = -pthread -lm
 WARN   = -Wall -Wextra -Wshadow -Werror -Wmissing-declarations
 NDEBUG = -DNDEBUG
 
-FLAGS  = $(STD) $(WARN) -O3 -flto
+FLAGS  = $(STD) $(WARN) -O3
 CFLAGS = $(FLAGS) -march=native
 RFLAGS = $(FLAGS) -static
 

diff --git a/src/bitboard.h b/src/bitboard.h
@@ -203,7 +203,8 @@ INLINE Bitboard XRayAttackBB(const Position *pos, const Color color, const Piece
     switch (pt) {
         case BISHOP: occ ^= colorPieceBB(color, BISHOP); break;
         case ROOK  : occ ^= colorPieceBB(color, ROOK); break;
-        case QUEEN : occ ^= colorPieceBB(color, ROOK) ^ colorPieceBB(color, BISHOP); break;
+        case QUEEN : return   AttackBB(ROOK, sq, occ ^ colorPieceBB(color, ROOK))
+                            | AttackBB(BISHOP, sq, occ = colorPieceBB(color, BISHOP)); break;
     }
     return AttackBB(pt, sq, occ);
 }

diff --git a/src/search.c b/src/search.c
@@ -438,7 +438,7 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
             TakeMove(pos);
 
             // Search to reduced depth with a zero window a bit lower than ttScore
-            int singularBeta = ttScore - depth * 2;
+            int singularBeta = ttScore - depth * (2 - pvNode);
             ss->excluded = move;
             score = AlphaBeta(thread, ss, singularBeta-1, singularBeta, depth/2, cutnode);
             ss->excluded = NOMOVE;
@@ -452,7 +452,7 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
             } else if (singularBeta >= beta)
                 return singularBeta;
             // Negative extension - not singular but likely still good enough to beat beta
-            else if (ttScore >= beta)
+            else if (depth limit? ttScore >= beta)
                 extension = -1;
 
             // Replay ttMove