cast fix

PuzzlePlayer/Binary.cs

@@ -125,7 +125,7 @@ namespace PuzzlePlayer_Namespace
                 {
                     Move ?m = CheckMove(i, j, boardToSolve);
                     if (m != null)
-                        result.Add(m);
+                        result.Add((Move)m);
                 }
 
             return result;