Free online puzzles

Sudoku online

Play Sudoku right here with Sudoku: no sign-up, nothing to install. Pick a difficulty and get a brand-new puzzle every time.

Board size

Sudoku every day

Every day there’s one Sudoku puzzle that everyone plays, with a leaderboard, streaks and an archive of past days.

How to play Sudoku

Place the digits 1 to 9 once in every row, every column and every 3×3 box outlined in bold. The daily puzzle is a quick 6×6 with 2×3 boxes and the digits 1 to 6.

Tips

  • Pick a digit and look for the one cell in a row, column or box where it can still go.
  • Turn on notes for tricky cells. When two cells in a row, column or box share the same two candidates, those digits can’t go anywhere else in it.

Want more techniques? Read the strategy guide.

More puzzles