大九宫格的第一行与每一列都有1到9的数字,每个小九宫格里也有,每行、每列小九宫格里只能出现一次.
(6)(1)(5)()(9)()() () (4)
(4)(7)(2)() ( )() ( )( 9 )(8 )
()(3)()() 267 1 5
()()(7)(2) 835 ( )( )
(3)(2)(4)( ) () ( )9 87 ()()(6 )(9)741 ( )( )
(8)(6)( 1 )(3) 4( )( )( )9
(2)(5)( ) ( )( ) 94 7 1
(7)() ( 9)() 5( ) 8 6 3