Remove "Any" predicate filter (#1914)

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index 8e7a5aa5d24de004688134b12dbbe75d9c902697..bd5daa6dcb0268be338f753750cdb945ecdc0faf 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -476,7 +476,7 @@ const string Position::fen() const {
   if (can_castle(BLACK_OOO))
       ss << (chess960 ? char('a' + file_of(castling_rook_square(BLACK | QUEEN_SIDE))) : 'q');
 
-  if (!can_castle(WHITE) && !can_castle(BLACK))
+  if (!can_castle(ANY_CASTLING))
       ss << '-';
 
   ss << (ep_square() == SQ_NONE ? " - " : " " + UCI::square(ep_square()) + " ")
@@ -579,7 +579,6 @@ bool Position::legal(Move m) const {
 /// Position::pseudo_legal() takes a random move and tests whether the move is
 /// pseudo legal. It is used to validate moves from TT that can be corrupted
 /// due to SMP concurrent access or hash position key aliasing.
-/// MOVE_NONE is represented as SQ_A1 to SQ_A1 which is never pseudo_legal.
 
 bool Position::pseudo_legal(const Move m) const {