如何用Python开发拼图游戏( 十 )

board[r][c]



            

if

 

r

 

-

 

1

 >

= 0 and board[

r - 1

][

c

] is None:  # 判断上面

                board[

r

][

c

] = None

                board[

r - 1

][

c

] = current_square

                steps += 1

            elif c + 1