Tweak

lib/src/models.dart

@@ -81,7 +81,7 @@ extension type const File._(int value) implements int {
   /// Gets the chessboard [File] from a file index between 0 and 7.
   const File(this.value) : assert(value >= 0 && value < 8);
 
-  /// Gets a [File] its name in algebraic notation.
+  /// Gets a [File] from its name in algebraic notation.
   ///
   /// Throws a [FormatException] if the algebraic notation is invalid.
   factory File.fromName(String algebraic) {

lib/src/position.dart

@@ -2654,7 +2654,7 @@ SquareSet _pseudoLegalMoves(Position pos, Square square, _Context context) {
     }
     pseudo = pseudo & captureTargets;
     final delta = pos.turn == Side.white ? 8 : -8;
-    final step = square.value + delta;
+    final step = square + delta;
     if (0 <= step && step < 64 && !pos.board.occupied.has(Square(step))) {
       pseudo = pseudo.withSquare(Square(step));
       final canDoubleStep =