The smoothest Sudoku you can play in a browser
Keyboard-first. Beautiful interactions. A new daily puzzle every day with a global leaderboard. Play anonymously or sign in to track your streak.
Have a puzzle in mind? Paste it →Keyboard first
Arrow keys, vim bindings, undo, redo, notes, hints — every action has a shortcut.
Daily puzzle
One shared puzzle every day. Solve it before midnight UTC to extend your streak.
Honest leaderboards
Hints are always allowed, and the daily board shows how many each player used.
Quick play
Chained Easy puzzles for short sessions. Weekly board ranks by solves.
Social play loop
Solve today's puzzle, then challenge your friends
Daily solves feed the leaderboard, and every completion can turn into a challenge link. Use it to start friendly rivalries and bring people back each day.
Get better at sudoku
Learn one technique at a time
The Technique Journey is 15 short interactive lessons, from naked singles to swordfish. The blog explains each technique step by step.