In classic sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9.
The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.
Features:
- Four different difficulties for each category (4x4, 6x6 or 9x9)
- Statistics: track your progress for each difficulty level
- Two grid styles (classic or colorfully)
- Automatically save progress (if you leave a game with numbers unfinished, it will be saved)
- Highlighting of a row, column, and box related to the selected cell
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