Terms of use

A free place to play, learn and take a break.

Using the site

4ool Puzzle provides logic games for personal entertainment. You may play and share puzzle links without registering. Do not disrupt the service, misuse its infrastructure or misrepresent the site as your own.

Availability and saved games

The site and puzzles are provided as available. We work to make them accurate and reliable, but do not guarantee uninterrupted access or error-free operation. Local game data can be lost when browser storage is cleared, unavailable or changed. Keep puzzle IDs if you want to revisit a starting board.

Puzzle generation

Difficulty labels describe the engine’s evaluation and may not match every player’s experience. Some combinations are intentionally unavailable. If generation reaches its work or time limit, retry to create another puzzle.

Intellectual property

Traditional puzzle rules belong to their respective traditions and creators. The 4ool branding, original interface and implementation may not be represented as someone else’s work. Third-party libraries retain their own licenses.

Changes

Features and these terms may change as the site develops. Existing versioned puzzle IDs are intended to remain reproducible while their generator version is supported.