About

About Logic Puzzles Online

Logic Puzzles Online is a free library of colourful logic puzzles, solvers and how-to guides, built for curious minds of every age.

Our mission

We believe a good logic puzzle is one of the most satisfying ways to spend a few minutes. Our mission is to gather the world’s logic puzzles in one bright, friendly place where anyone can learn the rules and start playing straight away — no app, no sign-up, no cost.

What you’ll find here

The site features dozens of playable puzzles, from classics like Sudoku, Kakuro and Nonogram to lesser-known gems such as Nurikabe, Masyu and Shikaku. Each puzzle comes with clear rules, adjustable difficulty and instant feedback.

Alongside the games we offer free puzzle solvers, printable puzzle sheets, and a growing blog of strategy guides that explain the techniques behind each puzzle type.

How we build our puzzles

Every puzzle is generated to have a unique, logically solvable solution — no guessing required. We test our generators and solvers carefully so that the difficulty labels are meaningful and each grid plays fairly.

Available in your language

We are translating the site into many languages, including French, Spanish, German, Italian, Portuguese, Polish, Dutch, Japanese and Traditional Chinese, so that players around the world can enjoy the same puzzles in their own language.

Get in touch

We love hearing from players. Whether you have feedback, a puzzle request or a bug to report, write to us at contact@logic-puzzles-online.com.