I am getting this and I can't progress any further.
Oops, try again. Did you remember to add the "You guessed that one already." message in your elif statement?
if guess_row==ship_row and guess_col==ship_col: print "Congratulations! You sank my battleship!" else: if guess_row not in range(5) or guess_col not in range(5): print "Oops, that's not even in the ocean." elif board[guess_row][guess_col] == 'X': print "You guessed that one already" else: print "You missed my battleship!" board[guess_row][guess_col] = 'X' print_board(board)