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Free Sudoku puzzles with a single solution
A fresh grid every time, carved so it has exactly one answer.
- Free, no account
Scores stay in this browser. Nothing is sent anywhere.
How it works
- 01
Choose Easy, Medium or Hard and a grid with a single solution is dealt.
- 02
Select a cell and type a digit, or turn on Notes to pencil in candidates.
- 03
Wrong digits are marked at once; a hint fills one cell from the solution.