The program furnishes several original schemes to solving Sudoku, and the solutions, in 3 degrees of difficulty (with 80 levels)! The printing on paper is useful, but the biggest improvement is the new menu.
Complete the scheme so that in 9 of 3*3 square (to angles, to the center and the rests) and in each line or column they appear all the numbers from 1 to 9. The program furnishes several original schemes to solve and the solutions with 80 levels in 3 degrees of difficulty.