Free Calcudoku Maker
Free Calcudoku Generator
Latin squares with arithmetic cages — 4×4, 5×5 or 6×6
Updated Sep 17, 2026
Calcudoku, known commercially as KenKen and sometimes as mathdoku, is a Latin square with arithmetic. Fill the grid so every row and column holds each number from 1 to the grid size exactly once, and make each outlined cage produce its target using the operation shown. A cage marked 8× has to multiply to 8; a cage marked 3− has to differ by 3. Sizes run from 4×4, which suits primary-school arithmetic practice, up to 6×6 for adults. Every puzzle exports as a printable PDF with the answer key.
Why use Puzzone
Arithmetic Practice That Is Actually a Puzzle
Cages force real mental addition, subtraction, multiplication and division, but the reward is a solved grid rather than a marked worksheet.
Three Grid Sizes
4×4 for younger solvers and quick warm-ups, 5×5 as the standard, 6×6 when you want a genuine sitting.
One Valid Grid
Cage targets are generated from a solved Latin square and verified, so the puzzle always resolves by logic.
Classroom Ready
Print a class set with answer keys, free and unlimited, with no login and no watermark.
How it works
Pick a Grid Size
Choose 4×4, 5×5 or 6×6 to match the age and arithmetic level of the solver.
Generate
Click Generate for a new cage layout with its arithmetic targets.
Print or Export
Download the PDF with the puzzle and its solution page.
Frequently asked questions
The rules are the same. KenKen is a trademarked name for the puzzle; calcudoku and mathdoku are the generic ones.