Use arrow and number keys to enter a sudoku
(d for demo, c to clear, backspace to delete)
 
123
456
789
A
B
C
738
164
295
461
952
873
259
387
461
D
E
F
453
871
926
798
236
514
612
945
738
G
H
I
647
319
582
189
625
347
523
874
196
 

        

What is this?

This is an interactive sudoku solver that works on only the most basic strategies for solving sudokus (which in the vast majority of cases is enough). When ever a cell is entered by a user, the program sets to work figuring out candidates using a simple set of rules.

Read more about this experiment (and watch Andrew Hoyer write the code!)

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