How to play
- Every row and column holds each number once.
- The numbers in a cage give its target with the operation shown: + − × ÷.
- Use ✎ notes to keep track of the options.
About Calcudoku
Calcudoku mixes logic with a little arithmetic. Every row and column holds each number once, like in sudoku.
The grid is split into framed cages. The numbers in a cage must give the target shown with its operation - add, subtract, multiply or divide. Small cages with big products are often the best place to start.
A new daily puzzle every day - the same for everybody - plus unlimited practice puzzles from 4×4 to 7×7. Every puzzle has exactly one solution.
Daily puzzleSame cages for everyone
Maths & logic+ − × ÷ in every cage
Four sizesFrom 4×4 to 7×7
Screenshots
Your progress
0Best score
0Games played
–Last played
Game details
- Tags
- Puzzle, Logic, Daily, Numbers
- Mode
- Single player
- Platform
- Web browser (Desktop, Tablet, Mobile)
- Updated
- Oct 11, 2026
- Developer
- ArcadeBarn Studios
Controls
- Click a cellSelect
- 1 - 7Put a number
- NNotes on / off
- BackspaceErase
- ArrowsMove
- Tap a cellSelect
- Number padPut a number
- ✎Notes
