It is a Sudoku with 4 levels (1000 questions each) and solver.
Features
* 4 difficulty levels
* Hint(Get solution from notes)
* Notes with auto fill / erase option
* Auto-save
* Undo
* 19 color them
Features
* 4 difficulty levels
* Hint(Get solution from notes)
* Notes with auto fill / erase option
* Auto-save
* Undo
* 19 color them
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