Privacy Policy

This privacy policy describes the information that's collected when you use the website, how it's stored and how it's used. Your privacy is very important, so the site only uses the bare minimum of information for correct operation.

Personal information

Information about your computer, including your IP address, operating system and browser type, is stored temporarily in log files and may be used for system administration purposes, such as diagnosing faults, analysing site statistics and maintaining security. This is common practice for almost every website in the world.

If you create an account, the site will collect and store:

• A username chosen by you - this may be displayed to other users either now or in the future (for example, on leaderboards)
• The e-mail address you provide - this won't ever be displayed to other users and is only used for account administration purposes, such as sending password reset e-mails This information is stored in a password-protected database, using standard industry practices.

Other information

If you create an account, the site will additionally collect and store:

• The puzzles you've solved
• Statistics such as your solving times

This information may be displayed on the website alongside your username, for example on leaderboards or summarised puzzle statistics. It may also be combined, anonymously, with statistics from other users to provide rolled-up totals or averages.

Cookies and Browser Local Storage

This website uses cookies, as almost every other website does, to give you the best possible experience. Cookies are small text files that are stored on your computer or mobile device when you browse websites. The cookies on this website help to:

• Provide statistics for puzzles - number of attempts, average solving time, etc.
• Personalise ad content

This website does not use cookies to:

• Collect any personally-identifiable information
• Collect any sensitive information
• Pass personally-identifiable or sensitive information to any third parties

If your browser is configured to use cookies and you continue to use this website, it will be regarded as acceptance of this cookie policy. If you wish to remove or not use cookies from this site, instructions are included below, although if you do, the site may not work as you expect.

Browser Local Storage

In addition to the cookies above, this website stores the puzzle you're currently solving in your browser's local storage, if it's available, including any numbers you've entered, cage combinations you've faded out, etc. This enables you to continue from where you left off if you close your browser or switch off your computer and return to it later.

Compliance with the GDPR

The GDPR (General Data Protection Regulation) is important European Union legislation designed to protect the privacy of individuals and their data. The website operates in accordance with the principles of the GDPR.