Properly Sudoku

Learn the techniques. Beat the hardest puzzles.

No account needed to play. Works on your phone and your computer.

• 17 levels

  From beginner to expert. Each level adds one or two techniques that a puzzle really needs, so you always know what you are practising.

• 36 lessons

  Every technique has a short lesson, practice boards and boards where you find the pattern yourself.

• Adaptive and duels

  Adaptive mode finds your level and follows it. Or play a friend on the same puzzle: the best score wins.