small cleanups

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index 6bbb7914ae805e2a6302c0fa6106c9f0f923f483..f5ff3da1862b29cf40d75a4b55e5c86ca1d3f8f3 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -306,7 +306,7 @@ void Position::set_castling_right(Color c, Square rfrom) {
   Square rto = relative_square(c, cr & KING_SIDE ? SQ_F1 : SQ_D1);
 
   castlingPath[cr] =   (between_bb(rfrom, rto) | between_bb(kfrom, kto) | rto | kto)
-                    & ~(square_bb(kfrom) | rfrom);
+                    & ~(kfrom | rfrom);
 }
 
 
@@ -591,7 +591,7 @@ bool Position::pseudo_legal(const Move m) const {
       if (   !(attacks_from<PAWN>(from, us) & pieces(~us) & to) // Not a capture
           && !((from + pawn_push(us) == to) && empty(to))       // Not a single push
           && !(   (from + 2 * pawn_push(us) == to)              // Not a double push
-               && (rank_of(from) == relative_rank(us, RANK_2))
+               && (relative_rank(us, from) == RANK_2)
                && empty(to)
                && empty(to - pawn_push(us))))
           return false;