X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fbitboard.h;h=42fd0e97ec697d39b0e038b1a87e0ce5f4bbbea0;hb=7077fbdd1481829a0a20b6975c4245609118b938;hp=c663f4bd1f7db28798fb21a197f05c4a4dc95a50;hpb=ec42154ef2569a58dae2164e328d5bbffcb2aee9;p=stockfish

diff --git a/src/bitboard.h b/src/bitboard.h
index c663f4bd..42fd0e97 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -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);
 }
 
 
@@ -212,6 +211,7 @@ constexpr Bitboard adjacent_files_bb(Square s) {
 inline Bitboard line_bb(Square s1, Square s2) {
 
   assert(is_ok(s1) && is_ok(s2));
+
   return LineBB[s1][s2];
 }
 
@@ -225,7 +225,9 @@ inline Bitboard line_bb(Square s1, Square s2) {
 /// interpose itself to cover the check or capture the checking piece.
 
 inline Bitboard between_bb(Square s1, Square s2) {
+
   assert(is_ok(s1) && is_ok(s2));
+
   return BetweenBB[s1][s2];
 }