📐 Kakuro

Kakuro is often called the maths crossword. Each run of white cells has a clue number; fill the cells with digits 1–9 so the run adds up to it, with no digit repeated inside a run.

How to play

1. Clue cells show the target for the run below (↓) or to the right (→).
2. Tap a cell and enter a digit 1–9; digits may not repeat within a run.
3. Every run must hit its exact total — use combinations to deduce the cells.

Difficulty affects grid size and time is your score — finish fast, post to the daily leaderboard, or race a friend.

All puzzles