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Sudoku
Play free Sudoku puzzles online in easy, medium or hard, with hints, error checking and a shareable puzzle link.
Tip from Tink: Every puzzle has exactly one solution — no guessing needed.
Puzzle #1. Share the link to send a friend the same puzzle.
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How to use the Sudoku
- Choose a difficulty.
- Tap a square, then a number (or type 1–9).
- Use Check or Hint if you get stuck.
Everything runs in your browser. Nothing you enter is uploaded.