A Sudoku game under development
- Implement first actions with undo
- Implement redo (maybe stacking cell snapshot before undo)
- Try a board filler that:
- fills independent groups 0, 4, 8
- calculate options for unset cells
- random solve 2, 6
- solves singles as a whole block (maybe before random solve 2 and 6 ?)
- solve the rest of the board