MSudoku

Fill the 9x9 grid so every row, column and box contains 1 to 9.

How to play MSudoku

MSudoku is the classic number puzzle on a nine-by-nine grid. The goal is to fill every empty square so that each row, each column and each of the nine three-by-three boxes contains the digits 1 to 9 exactly once.

Start with the numbers already on the board. Look for a square where only one digit can fit, fill it in, and let that help you with the next one. Never guess if you can reason it out: every puzzle can be solved by logic alone.

If you place a digit that repeats in a row, column or box, it breaks the rule, so check your work as you go. MSudoku runs in your browser on phone, tablet and desktop with nothing to download.

Press Play now to open a puzzle.