Remove precomputed SquareBB

[stockfish] / src / bitboard.h

diff --git a/src/bitboard.h b/src/bitboard.h
index d4485fcbefcb2766828e57ad3c56413c4df7a6b2..42fd0e97ec697d39b0e038b1a87e0ce5f4bbbea0 100644 (file)
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -74,7 +74,6 @@ constexpr Bitboard KingFlank[FILE_NB] = {
 extern uint8_t PopCnt16[1 << 16];
 extern uint8_t SquareDistance[SQUARE_NB][SQUARE_NB];
 
-extern Bitboard SquareBB[SQUARE_NB];
 extern Bitboard BetweenBB[SQUARE_NB][SQUARE_NB];
 extern Bitboard LineBB[SQUARE_NB][SQUARE_NB];
 extern Bitboard PseudoAttacks[PIECE_TYPE_NB][SQUARE_NB];
@@ -108,7 +107,7 @@ extern Magic BishopMagics[SQUARE_NB];
 
 inline Bitboard square_bb(Square s) {
   assert(is_ok(s));
-  return SquareBB[s];
+  return (1ULL << s);
 }