Calculate min distance between king and his pawns

[stockfish] / src / bitboard.h

diff --git a/src/bitboard.h b/src/bitboard.h
index cc039397e3330728022f22c2905891a20849a343..d187102ff1bf17914dd806c250b85bf8d757049f 100644 (file)
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -50,6 +50,7 @@ extern Bitboard ThisAndAdjacentFilesBB[8];
 extern Bitboard InFrontBB[2][8];
 extern Bitboard StepAttacksBB[16][64];
 extern Bitboard BetweenBB[64][64];
+extern Bitboard DistanceRingsBB[64][8];
 extern Bitboard ForwardBB[2][64];
 extern Bitboard PassedPawnMask[2][64];
 extern Bitboard AttackSpanMask[2][64];