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Sudoku is a logic number puzzle played on a grid divided into boxes. Fill every empty cell so that each row, each column and each box contains every digit exactly once — 1 to 9 on the classic 9×9 grid, 1 to 4 on a 4×4 grid, and 1 to 6 on a 6×6 grid. Every puzzle on Playoku has exactly one solution and can be solved by logic alone, with no guessing required.
Free to play, with no sign-up and no ads.
Yes. Playoku is completely free, with no sign-up and no ads. Just open the page and start solving.
Fill every empty cell so that each row, each column and each box contains every digit exactly once. Every puzzle has exactly one solution and can be solved by logic alone.
Playoku offers 4×4, 6×6 and 9×9 grids across four difficulty levels: Easy, Medium, Hard and Expert.
Yes. Use the Share button to copy a link that recreates the exact same board.