Solve your own board

Enter a puzzle and see which digit goes next and why it has to go there, one move at a time. The answer is never given all at once, so you can get past the part you are stuck on and keep solving.

How to use it

  1. Enter the board. A photograph or screenshot can be read in instead.
  2. Press Next move to see the technique that applies and where to look.
  3. Place the digit yourself once you see it. Press Next move again when you get stuck.