🧮 Calcudoku

Calcudoku combines Latin-square rules with arithmetic cages. Each row and column needs 1–n once each, and every outlined cage must produce its target number using its operation.

How to play

1. Tap a cell and enter a digit.
2. Cages show a target and an operation, e.g. 6× or 3−.
3. Satisfy every cage without repeating digits in any row or column.

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

All puzzles