4×4 KenKen
Free printable 4×4 KenKen (Calcudoku) puzzles — a gentle introduction that mixes Sudoku-style logic with simple arithmetic. Fill 1–4 in each row and column and hit every cage's target. Play online, print, or download the PDF with the answer key.
Fill the grid with 1–4 so no number repeats in any row or column. Each outlined cage must combine to its target using the shown operation.
Click a cell, then pick a number.
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KenKen (Calcudoku)
Caged arithmetic logic combining addition, subtraction & division
Learn How to Play, Solve & Teach 4×4 KenKen
What Is KenKen? A Beginner's Guide to the Sudoku-Meets-Math Puzzle
Learn what KenKen (Calcudoku) is and how to solve it, step by step. A friendly beginner's guide to the cages, the operations, and the simple logic tricks that crack every puzzle — play free online or print it.
Frequently asked questions
Is the KenKen generator free?+
Yes. Generate unlimited KenKen (Calcudoku) puzzles and play, print or download them for free — no account or signup required.
How do you play KenKen?+
Fill the grid so each row and column contains the numbers 1 to n with no repeats, like Sudoku. In addition, each outlined 'cage' shows a target and an operation, and the numbers in that cage must combine with that operation to reach the target.
What do the cage symbols mean?+
× means the cage's numbers multiply to the target, ÷ means they divide, − means they subtract, and + means they add. A cage with a single number and no symbol is a free gift — just write that number in.
Does every puzzle have one solution?+
Yes. Each puzzle is verified by a solver to have exactly one unique solution before it's shown to you.
What sizes are available?+
Three grid sizes — 4×4, 5×5 and 6×6 — with Easy, Medium and Hard settings that control how large and tricky the cages are.
How do I print a KenKen puzzle?+
Click Preview & Download, choose US Letter or A4, and download the PDF. It includes the puzzle plus a separate answer key page.