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Very Easy Easy Medium Hard Very Hard Super Hard

The assistant can be started with a random Sudoku, simply select the difficulty level below. If you'd like a Sudoku that requires a particular technique, then select that as well. Remember, that some difficulty levels don't contain some of the techniques. Click here for a list of techniques required for each difficulty level.

0 - Random Level 1 - Very Easy 2 - Easy 3 - Medium 4 - Hard 5 - Very Hard 6 - Super Hard    Select technique... Pinned Squares Locked Sets Intersection Removal X-Wing Swordfish Remote Pairs Unique Rectangles XY-Wing XYZ-Wing BUG Removal   

 

The assistant can import a Sudoku from another source, simply enter the numbers in any sensible manner (e.g. 73.548.1.1...9...4...3 etc). The system is reasonably clever in finding the correct 81 digits, but if you think it isn't working correctly then please feel free to contact me.