Built Sudoku4Adults.com due to a love for online sudoku games. The goal was to build a free, clean, fast puzzle you can play instantly on any device.
Highlights
Easy → Extreme difficulties
Daily puzzle + weekly tournaments
Hints, solver, printable PDFs
Streaks and personal bests
Would love feedback:
Does it feel fast and clear on your device?
Which difficulty do you actually stick with—and why?
What should come next: dark mode, deeper stats, or variants (Killer/Jigsaw)?
Bug reports and rough edges welcome. 🧩
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