what can this do

• support up to order-9 81x81 sudoku
• make any random sudoku and solve it
• solve the hardest sudoku designed by Arto Inkala in 2012

sudoku maker

Steps for making a sudoku puzzle

• initialize a standard map of order-N sudoku
• swap whole rows and cols for every chunk randomly
• trim the map randomly

Standard map defined for order-3 9x9 sudoku

1	2	3	4	5	6	7	8	9
4	5	6	7	8	9	1	2	3
7	8	9	1	2	3	4	5	6
2	3	4	5	6	7	8	9	1
5	6	7	8	9	1	2	3	4
8	9	1	2	3	4	5	6	7
3	4	5	6	7	8	9	1	2
6	7	8	9	1	2	3	4	5
9	1	2	3	4	5	6	7	8

Screenshots

sudoku solver

Steps for solving a sudoku puzzle

• scan every void in puzzle map and check what can put in it
• scan every number in puzzle scale and check where can put it in
• fill the logically available numbers which are absolutely right
• if dead end, guess a number
• if error, withdraw guess and make a new one

Screenshots