def init_board():
    """Returns an empty 0-by-0 board (with zeros)."""
    board = [[0,0,0],[0,0,0],[0,0,0]]
    return board


board = init_board()
board_pair = {"A": board[0], "B": board[1], "C": board[0]}

row, col = 0, 0


print(board_pair.keys())
locks = list(board_pair.keys())

print(f"This is locks {locks}")

fail = False

while True:
    usermove = input("What coords?")
    for key in locks:
        coords = list(usermove)
        if usermove.startswith(key):
            print("GJ!")