Free · No signup · No ads · Updated 2026-07-25
Free Sudoku online, no signup
Play the daily 9×9 puzzle in the difficulty you want, right now. New boards every morning at 00:05 UTC. No account required, no ads, no app.
easy
easy · today
8
3
4
1
2
4
2
8
1
5
2
6
9
7
8
3
4
9
7
7
6
9
2
7
6
1
2
3
1
5
3
6
7
3
5
1
7
9
~5 min · 38 clues
Play free →medium
medium · today
8
3
7
6
2
4
8
1
4
9
7
6
5
2
4
6
9
8
9
2
4
3
8
2
6
4
6
6
4
8
2
7
~35 min · 32 clues
Play free →hard
hard · today
4
9
3
2
8
1
6
8
7
6
4
3
5
9
2
9
2
4
4
2
4
8
9
3
4
5
9
6
~12 min · 28 clues
Play free →expert
expert · today
2
4
7
6
9
7
3
8
4
5
5
3
6
8
2
1
8
9
4
2
7
9
4
5
~12 min · 24 clues
Play free →What makes Zeloku's free Sudoku different
Most "free" Sudoku sites monetise in some way — ads between puzzles, a premium tier locked behind signup, "no ads for $5/month". Zeloku doesn't. The playing area has no ads. There is no premium tier. There is no signup. The daily puzzle you play today is the same one shipped to every player worldwide.
- Four daily difficulties. Easy through Expert, using different clue targets plus an estimated complexity score.
- Kids boards. Free 4×4 and 6×6 Sudoku for ages 5–10, plus printable rules.
- A step-by-step solver. Paste any board into the free Sudoku solver, get an explanation of every move.
- Printable PDFs. Take Sudoku offline with free printable booklets — perfect for planes, classrooms and the kitchen table.
- A techniques library. The full Sudoku techniques library, from Naked Single to X-Wing, with annotated examples.
How to play — the 30-second version
- Pick a difficulty above and open today's board.
- Tap a cell, then tap a digit 1–9 to fill it.
- Fill every empty cell so that each row, column, and 3×3 box contains 1–9 exactly once.
- Stuck? Tap the hint button — it names the technique needed for the next move.
Full rules: Sudoku rules explained. First-time player: How to play Sudoku (3-min guide).