Important Hints!

• Addition-only and addition & subtraction-only puzzles (at smaller grid sizes, and easier difficulty levels) are an excellent starting point.

**Though addition-only puzzles can be the easiest ones, they can also be the most challenging! Don’t believe us? Try any addition-only puzzle set to hard or expert!

Daily Selection

Every day, we feature six different KENKEN puzzles for you to try out! These puzzles are active for 24 hours.

Play Now!

Unlimited Puzzles!

PLAY ALL YOU "KEN"! Choose your puzzle size and we will randomly generate a puzzle for you. Or, if you prefer, customize your puzzle options: Just click the "advanced options" button. Then you can select math operations and challenge level as well. Try out our new features, such as "drag-and-drop" note-taking and solution reveal.

Choose Puzzle Size

advanced options

Choose Operations Important hints!

Choose Challenge Level

Learn KenKen in 2 minutes with Will Shortz

Why Will Shortz Loves KENKEN

The first-ever KENKEN championship

KENKEN at the Crossword Puzzle Tournament

How to play KENKEN, from Howcast.com