class Solution: def flipChess(self , A: List[List[int]], f: List[List[int]]) -> List[List[int]]: # write code here M=len(A) for pos in f: px,py=pos[0]-1,pos[1]-1 for x,y in [(px-1,py),(px+1,py),(px,py-1),(px,py+1)]: if 0<=x<...