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Practice KenKen online free in your browser with no signup required. Start with instant beginner-friendly puzzles, adjust size and difficulty, and move into competition only when you want it.
No signup for practice. Create an account only when you want 1v1 and progress tracking.
📖 Learn KenKen RulesNo opponent, no pressure. Choose size & difficulty freely.
Recommended first stepRace another player when you want pressure, speed, and Elo-ranked competition.
Login requiredRace the clock! Solve as many as you can in 5 or 60 minutes.
Teachers: Create homework. Students: Complete tasks.
Improve logic, math, and pattern recognition skills.
Detailed stats, Elo rating system, and achievement badges.
Global Ranking Competition
KenKen is a math-based logic puzzle invented by Japanese educator Tetsuya Miyamoto in 2004. It combines arithmetic with Sudoku-like grid logic, making it perfect for players of all ages who want to boost their mathematical thinking and problem-solving skills.
Master addition, subtraction, multiplication, and division naturally.
Develop deductive thinking through constraint-based puzzles.
Used in classrooms worldwide to make math fun and engaging.
Addictive gameplay that keeps you coming back for more.
PuzzleElo has become my daily brain workout. The 1v1 matches are incredibly addictive, and I've improved my mental math significantly!
As a math teacher, I use PuzzleElo assignments with my students. They love competing on the class leaderboard while learning arithmetic!
The Elo rating system keeps me motivated. It's satisfying to see my ranking improve as I get better at solving puzzles faster.
Yes! PuzzleElo offers unlimited free practice mode and daily puzzles. Premium membership unlocks additional features like detailed analytics, larger puzzle sizes, and an ad-free experience.
We offer puzzles from 3×3 (beginner-friendly) to 12×12 (expert level). Each size has its own Elo rating, so you can progress at your own pace.
Your Elo rating is calculated based on puzzle difficulty and completion time. Solving harder puzzles faster earns you more points, while easier puzzles or slower times yield fewer gains. Each puzzle size has its own rating curve!
Open a free practice puzzle first. Move into 1v1 only after you are warmed up.
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