About Free Logic Puzzle

Last updated 2026-10-10

Free Logic Puzzle is a free set of logic puzzle tools: logic grid (Einstein / zebra) puzzles in several sizes, puzzles for kids, knights and knaves, river crossing and bridge-and-torch puzzles, water jug puzzles, matchstick equations and a code-breaking game. You can play each one on screen or print it with an answer key. There is no account and nothing to install.

How it works

• Everything runs in your browser. What you type or choose stays on your device; nothing is uploaded.
• Every puzzle is made and checked on your device. Puzzles are generated from a puzzle number, so a shared link or a reprint gives exactly the same puzzle, and a solver checks each one before it is shown (generated logic grid and knights and knaves puzzles have exactly one answer).
• Third-party material used on the site is listed on the credits page.

If a tool gives a wrong result, please tell us through the contact page.

Who runs it

Free Logic Puzzle is owned and operated by SKYSEED TECH LLC. You can write to us at jun@freelogicpuzzle.com.

Advertising

The site is free to use. We may show advertising in future to pay for hosting and development. If we do, ads will be labelled “Advertisement”, will never cover a tool, and are described in the privacy policy.