Crossmath Challenge — Play Free Online

About Crossmath Challenge

Crossmath Challenge is a crossword where the answers are equations. Arithmetic crosses arithmetic, and every solved line constrains the rest, so it plays like Sudoku for people who like actual numbers. A genuinely good daily-brain workout.

How to Play

Fill the empty cells with digits and operators so every horizontal and vertical equation is correct. Use the given numbers as anchors and eliminate possibilities row by row.

Crossmath Challenge — FAQ

Is Crossmath Challenge free to play?

Yes — 100% free, no download and no signup required. Click play and enjoy.

Can I play Crossmath Challenge on mobile?

Yes. The game is an HTML5 browser game and works on phones, tablets and desktops.

Does Crossmath Challenge need an internet connection?

You need internet to load this page and the game — after that it runs entirely in your browser.