Games /
数独
Fill the 9×9 grid so every row, column, and 3×3 box contains digits 1–9 with no repeats. Choose easy, medium, or hard. Free, no signup, browser-based.
遊び方
- Tap a cell, then tap a digit on the number pad (or type 1–9 on the keyboard).
- Each row, column, and 3×3 box must contain digits 1 to 9 exactly once.
- Conflicts are highlighted in red. Solve the whole grid to win.
Frequently asked questions
- Is it free?
- Yes — no signup, no ads interrupting play.
- Does my data leave my device?
- No. Everything runs locally in your browser.
- Does it work on mobile?
- Yes. Tap cells then digits on the number pad below the board.