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Sudoku

🎮 Tap a cell then a number. Keyboard: arrows move, 1-9 fill, Backspace clears.

Classic sudoku with a fresh seeded puzzle every day — easy, medium and hard. Conflict highlighting, no timer pressure, no forced ads. Progress saves in your browser.

How to play

  1. Fill the 9×9 grid so every row, column and 3×3 box contains the digits 1-9 exactly once.
  2. Tap a cell, then tap a number on the keypad — conflicts with the same row, column or box highlight instantly.
  3. Choose Easy, Medium or Hard; the Daily board gives every player worldwide the same seeded puzzle.
  4. Stuck cells can be cleared and re-filled — there is no timer and no penalty for experimenting.

Frequently asked questions

What is Sudoku?

A classic logic puzzle: fill the 9×9 grid so every row, every column and every 3×3 box contains the digits 1 to 9 exactly once. It is pure deduction — no math and no guessing required.

Is there a daily sudoku?

Yes. The Daily board is generated from the date, so every player worldwide gets the same puzzle each day. Easy, Medium and Hard free-play modes are always available too.

Are the puzzles always solvable?

Yes — every board is generated from a complete valid solution, so a solution always exists. Conflicts with existing numbers are highlighted the moment you place a digit.

Does it cost anything or show ads?

It is completely free with no forced ads, no accounts and no downloads. Your current board saves automatically in your browser.

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Free tools for work time

Between gaming sessions, our sister site ToolTide runs free online tools — percentage calculators, unit converters and live countdowns. No sign-up there either.