Fix upstream merge for large-board version

diff --git a/src/bitboard.h b/src/bitboard.h
index 16039cf..568f761 100644 (file)
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -187,7 +187,7 @@ inline bool opposite_colors(Square s1, Square s2) {
 /// the given file or rank.
 
 inline Bitboard rank_bb(Rank r) {
-  return Rank1BB << (8 * r);
+  return Rank1BB << (FILE_NB * r);
 }
 
 inline Bitboard rank_bb(Square s) {