About KenKen Puzzles
A free, ad-supported puzzle site dedicated to making mathematical logic puzzles accessible to everyone.
Our Mission
We believe math should be fun. KenKen puzzles are the perfect blend of arithmetic practice and logical thinking — and they shouldn't cost anything to play. Our mission is to provide a high-quality, fast, and free KenKen experience for puzzle enthusiasts of all ages.
From students learning their times tables to experienced solvers seeking expert-level challenges, we want everyone to find puzzles that match their skill level and help them grow.
What We Offer
300 Handcrafted Puzzles
Seven grid sizes (3×3 to 9×9) across four difficulty levels. Every puzzle has a unique solution verified by our solver.
Daily Challenge
A new puzzle every day with streak tracking. Come back daily to build your solving habit.
Interactive Game Engine
Full-featured player with pencil marks, undo/redo, error checking, timer, and auto-save. Works on desktop and mobile.
Puzzle Solver
Input any KenKen puzzle and get the solution instantly. Uses constraint propagation and backtracking.
Combination Tables
Complete reference tables showing every valid digit combination for each cage size, operation, and target number.
Learning Resources
How to play guides, advanced strategies, comparison articles, and resources for teachers and kids.
Built for Speed
This site is statically generated — every page is pre-built HTML served from a global CDN. That means near-instant page loads with zero server-side processing. The game component uses React for interactivity, but the puzzle data is embedded at build time for instant availability.
Built with Astro, React, and Tailwind CSS. Hosted on Cloudflare Pages. Open source puzzle generation with verified unique solutions.
Contact
Have feedback, found a bug, or want to suggest a feature? We'd love to hear from you.
Email: contact@kenkenpuzzle.online
(Replace with your actual contact email before deploying.)