Revert Chess960 fix

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index efac40b328a647414f64bb661da106fe023c59ea..f0301e4ec9308af1a78394c5728b0246b1af30a3 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -101,20 +101,23 @@ namespace {
       operator[]('B') = WB; operator[]('b') = BB;
       operator[]('N') = WN; operator[]('n') = BN;
       operator[]('P') = WP; operator[]('p') = BP;
-      operator[](' ') = PIECE_NONE; operator[]('.') = PIECE_NONE_DARK_SQ;
+      operator[](' ') = PIECE_NONE;
+      operator[]('.') = PIECE_NONE_DARK_SQ;
     }
 
     char from_piece(Piece p) const {
 
-        std::map<char, Piece>::const_iterator it;
-        for (it = begin(); it != end(); ++it)
-            if (it->second == p)
-                return it->first;
+      std::map<char, Piece>::const_iterator it;
+      for (it = begin(); it != end(); ++it)
+          if (it->second == p)
+              return it->first;
 
-        assert(false);
-        return 0;
+      assert(false);
+      return 0;
     }
-  } pieceLetters;
+  };
+
+  PieceLetters pieceLetters;
 }
 
 
@@ -635,9 +638,9 @@ bool Position::pl_move_is_legal(Move m, Bitboard pinned) const {
 
   // A non-king move is legal if and only if it is not pinned or it
   // is moving along the ray towards or away from the king.
-  return (   !pinned
-          || !bit_is_set(pinned, from)
-          || (direction_between_squares(from, king_square(us)) == direction_between_squares(move_to(m), king_square(us))));
+  return   !pinned
+        || !bit_is_set(pinned, from)
+        ||  squares_aligned(from, move_to(m), king_square(us));
 }
 
 
@@ -695,7 +698,7 @@ bool Position::move_is_check(Move m, const CheckInfo& ci) const {
   {
       // For pawn and king moves we need to verify also direction
       if (  (pt != PAWN && pt != KING)
-          ||(direction_between_squares(from, ci.ksq) != direction_between_squares(to, ci.ksq)))
+          || !squares_aligned(from, to, ci.ksq))
           return true;
   }