def build_chess(size, pieces, verbose):
width, height = size
# assert len(pieces) <= (width * height) / 2
board = ChessBoard(width, height, pieces, verbose=verbose)
t = datetime.now()
board.find_combinations()
print(board.get_combinations_number(), datetime.now() - t)
def test_unique_result(self):
board = ChessBoard(3, 3, ['K', 'K', 'R'])
board.find_combinations()
self.assertEqual(board.get_combinations_number(), 4)