class Solution: def isValue(self, board, x, y): for i in range(9): # 检查列 if i != x and board[i][y] == board[x][y]: return False for j in range(9): if j != y and board[x][j] == board[x][y]: return False # 检查每个正方形是否符合 m, n = 3 * (x // 3), 3 * (y // 3) # 这里求出3x3网格的左上角的坐标 for i in range(3): for j in ran...