8 Sudoku Formats Currently Live On Vucui

Eight picks spanning the different ways a sudoku grid gets varied.

1. A classic 9x9 grid with standard row, column, and box rules.
2. Smaller 6x6 grid aimed at a quicker, beginner-friendly round.
3. One diagonal-rule variant adding two extra lines that must also contain no repeats.
4. There's a timed grid that rewards fast, confident deduction.
5. Also on the shelf: a killer-style grid combining sudoku rules with sum-based regions.
6. Worth trying: a jigsaw-style grid replacing standard boxes with irregular shapes.
7. A daily puzzle format with a single new grid released each day.
8. Relaxed, untimed grid aimed at a slower, no-pressure session.
9. One twin-grid format where solving one grid partially reveals clues in a second.
10. There's a speed-run format ranking completion time against previous attempts.
11. Also on the shelf: a cooperative-style grid built for comparing solving approaches with a second player.
12. Worth trying: a tutorial-style grid series introducing advanced techniques one at a time.
13. A themed number-set variant replacing digits with symbols for a different visual read.
14. Themed number-grid series pairing puzzles with a light color-coded difficulty scale.
15. One limited-technique mode restricting solving to basic elimination only.
16. There's a themed grid ladder climbing from easy to expert across a single number-set style.

Give it a few weeks and the formats on this list will likely look different.