CLASSIC · 9×9
9×9 Sudoku — the classic challenge
Place 1–9 once per row, column, and 3×3 box. This is Sudoku as the world knows it: 5–10 minutes on Easy, 20+ minutes on Expert.
Why pick 9×9
- The classic Sudoku experience loved worldwide
- Widest difficulty range — from Easy to Expert
- Room for advanced techniques like X-Wing and Swordfish
- Home base for the Daily challenge and the global leaderboard
Who it's for
Choose 9×9 when you want a long, focused session, or when you're serious about chasing scores on the global leaderboard. A fresh puzzle drops at 00:00 UTC every day.
Scoring & ranking
Scores come from a per-cell base with penalties for time, mistakes, and hints. Ties break by fastest completion time.