Difficulty
◈ · Same puzzle for everyone
Paused
Your timer is paused and the board is hidden.
Select a square and choose a number.Pencil: off
One number at a time. A little logic, a lot of satisfaction.
Your timer is paused and the board is hidden.
Play free Sudoku on Play Porch with three difficulty levels, a daily challenge, pencil notes, hints, undo and saved progress on your device.
Choose Classic for Easy, Medium or Hard, or play the Daily challenge. Select an empty square and use the number buttons or keys 1–9. Arrow keys move the selection.
Turn on Notes to record possible digits. Erase clears the selected entry or notes; Undo reverses a move. Ctrl or Command plus Z undoes, and Shift plus that shortcut redoes. Check highlights wrong entries; Hint supplies one correct number.
Pause hides the board and stops the clock. Your puzzles, notes and move history are saved in this browser, so you can return later. Clearing browser data removes these saves.
Fill every row, column and outlined 3×3 box with 1 through 9, using each number exactly once in each unit. The starting clues cannot be changed. Every supplied puzzle has one solution.
Conflicts highlight repeated numbers in a row, column or box. A number can still be incorrect without causing an immediate conflict; Check compares your entries with the solution. Hints are counted, even if their moves are undone.
Daily offers the same Medium puzzle to everyone using this puzzle bank on a given UTC date. It changes at 00:00 UTC. Completing consecutive daily puzzles builds a local streak; using hints still counts. Classic difficulty is approximate and uses 42, 33 or 27 starting clues.
Begin with rows, columns or boxes that are almost complete. For an empty square, eliminate numbers already present in its three units.
Look for a number that has only one possible position in a box. Pencil notes help you keep track of candidates, but you must update those notes as the board changes.
Work from deductions rather than guesses. If you lose track, Undo lets you revisit a move, while Check and Hint can help you understand where you went wrong.
Sudoku is a number-placement logic puzzle: arithmetic is not required. This Play Porch edition includes a bank of 24 uniquely solvable puzzles with digit and layout transformations, three Classic levels and a shared daily puzzle. Timers, saves and daily records stay in your browser. The supplied game interface supports English, Brazilian Portuguese, French and German.