Simple game of sudoku rules are simple: 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 (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid - via Wikipedia.org ((https://en.wikipedia.org/wiki/Sudoku)
- The board size
- The number of empty squares
While picking the number of squares missing here is a table of difficulty:
| Sudoku Size | Easy (Low diff) | Medium diff | Hard diff |
|---|---|---|---|
| 9×9 board | ~30–40 missing | ~41–50 missing | ~51–60+ missing |
| 16×16 board | ~60–80 missing | ~81–100 missing | ~101–120+ missing |
| 25×25 board | ~120–160 missing | ~161–200 missing | ~201–250+ missing |
In my experience the 9x9 board loads perfectly hovewer a 16x16 board overflows. Soo for bigger boards please switch to a pc.