public static void TestUndoNYI()
{
string fen = "rnbqkbnr/ppp1pppp/8/3p4/4P3/8/PPPP1PPP/RNBQKBNR/ w KQkq - 2 2";
CrazyhouseChessGame game = new CrazyhouseChessGame(fen);
game.MakeMove(new Move("E4", "D5", Player.White), true);
Assert.Throws <NotImplementedException>(() => game.Undo());
}