Sudoku 9x9

It is sudoku puzzle game.!
total 7000 level. it is all free!

How to use.
1. Touch Blank.
2. if it show small menu, Select Big button and number Button. And fill remained blank.
3. if you select small button and number, it is function for writing temporary number only briefly.
4 if you touch clear menu, it is deleted number.


Rule.
1. you can enter only one at the time from 1 to 9 in only one Horizontal column
2. you can enter only one at the time from 1 to 9 in only one vertical column
3. you can enter only one at the time from 1 to 9 in only one 3x3(9space) box