the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
+
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
extern const Bitboard RelativeRankBB[2][8];
extern const Bitboard InFrontBB[2][8];
-extern Bitboard SetMaskBB[64];
-extern Bitboard ClearMaskBB[64];
+extern Bitboard SetMaskBB[65];
+extern Bitboard ClearMaskBB[65];
extern Bitboard StepAttackBB[16][64];
extern Bitboard RayBB[64][8];