Can somebody tell me how is this test case result in false in sudoku verify problem?
[[".",".",".",".","5",".",".","1","."],[".","4",".","3",".",".",".",".","."],[".",".",".",".",".","3",".",".","1"],["8",".",".",".",".",".",".","2","."],[".",".","2",".","7",".",".",".","."],[".","1","5",".",".",".",".",".","."],[".",".",".",".",".","2",".",".","."],[".","2",".","9",".",".",".",".","."],[".",".","4",".",".",".",".",".","."]]