Logic Puzzles Online

Logic Puzzles Online is a free, colourful collection of logic puzzles you can play online in any modern browser — there is no app to install and no account to create. From the moment a grid loads you can start solving, whether you have two minutes for a quick Sudoku or an evening to spend on a tricky Nurikabe.

The library brings together more than forty puzzle types in one place. Number puzzles like Sudoku, Killer Sudoku, Kakuro and Futoshiki sit alongside picture-logic puzzles such as Nonogram, region-shading challenges like Norinori and LITS, loop puzzles like Slitherlink and Masyu, and classic two-player games including Hex and Nine Men's Morris. Every puzzle has clear rules, adjustable sizes and difficulty, instant error checking and gentle hints, so you can learn a new type in minutes.

Because the puzzles run entirely in your browser, your progress is saved on your own device and you can pick up where you left off. The same logic puzzles are available in nine languages, and you will also find free solvers, printable PDF sheets and beginner-friendly strategy guides to help you improve.

Logic puzzles are a relaxing way to sharpen focus, pattern recognition and step-by-step reasoning. Unlike games of chance, every puzzle here has a single solution that can be reached through deduction alone — there is never any need to guess, which is what makes solving them so satisfying.

They suit every level. Beginners can start with small, gentle grids and a how-to guide, while experienced solvers can jump straight to large, hard puzzles. Switch puzzle type whenever you want variety, or stick with a favourite and chase a faster time.