如何用Python开发拼图游戏(13)

[

r

 + 

1

][

c

] = 

current_square



                

steps

 += 

1



            

elif

 

c

 

-

 

1

 >

= 0 and board[

r

][

c - 1

] is None:  # 判断左面

                board[

r

][

c

] = None

                board[