DrawPiko
GridNook Sudoku

Play classic Sudoku offline

Take a quiet puzzle break. Play classic 9×9 Sudoku at your own pace, make pencil notes, and pick up where you left off.

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Classic Sudoku boardPencil notes for candidate numbers

Choose your challenge

Start with a difficulty that suits you and work through a classic nine-by-nine grid.

Think with pencil notes

Mark possible numbers in a cell as you work out what fits.

Resume and track progress

Return to an unfinished puzzle and review your statistics and best times.