KenKen (Calcudoku) Generator
Creates calcudoku puzzles — also known as mathdoku or by the trademarked name KenKen: fill the grid so no digit repeats in any row or column, while each outlined cage reaches its target number with the printed operation (+, −, ×, ÷). Every puzzle is verified to have exactly one solution. Solve on the page with checking and hints, print with an optional solution page, or export PNG/SVG.
Runs 100% in your browser — your puzzles never leave your device.
Read the full guide to this tool
Notes
- Rules: each row and each column contains every number exactly once; the numbers in a cage must produce the cage target using its operation. Subtraction and division cages always have two cells and may be solved in either order.
- Uniqueness is guaranteed: if a candidate puzzle has several solutions, the generator splits a large cage and re-checks until exactly one solution remains.
- Difficulty controls cage sizes and operations: easy favors small addition cages and single-cell givens, hard uses large multiplication cages.
- Runs 100% in your browser — your words and puzzles never leave your device unless you publish an embed.
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