Legal

Terms of Use

Last updated: April 16, 2026.

By using Shikaku, you agree to use the site in a lawful and reasonable way. These terms are intended to explain the basic rules for accessing the site, using its gameplay tools, and participating in public features such as leaderboards, archive pages, and shared challenge links.

Using The Site

You may use Shikaku for personal, non-disruptive use, including playing puzzles, browsing archives, using the solver, and creating or sharing challenge links. You agree not to interfere with the site, attempt to damage or overload it, scrape restricted content in abusive ways, or misuse public submission features.

Public Content And Submissions

If you submit a username, challenge title, message, or other public-facing content, you are responsible for what you submit. We may remove, limit, or reject content that is misleading, abusive, unlawful, spam-like, or harmful to the site or its users.

Availability And Changes

We may update, suspend, or change features at any time, including puzzle pools, archive pages, leaderboard rules, solver tools, and public submission flows. We do not guarantee uninterrupted availability or error-free operation.

No Warranty

Shikaku is provided on an “as is” and “as available” basis. While we aim to keep the site accurate and reliable, we cannot guarantee that every puzzle, archive entry, statistic, or page will always be complete, correct, or available without interruption.

Contact

If you have questions about these terms, you can contact us at anqigeFrank@gmail.com.