What this edition offers
Use the pages for personal reading, rule discussion and exploration of the working examples. The puzzle room offers repeatable prepared positions, not a paid competition or a service offering redeemable winnings.
The illustrations describe an imagined physical treatment. The print kit is a simple paper prototype you can assemble yourself, not the illustrated manufactured set. There is no stock, shipping offer, official boxed release or commercial partnership behind the pictures.
Keep interaction relevant
Do not interfere with the service, attempt to obtain another visitor's data or introduce harmful content. Questions should describe the relevant page, example or access problem and omit personal details unrelated to resolving it.
Groups may agree house variations for their own table. Those variations are not automatically implemented in the site's fixed challenge logic. Check the published rule before assuming a different convention applies.
Availability and useful corrections
Access depends on the visitor's browser and connection. Temporary puzzle progress is not backed up as a personal record, and the remembered notice is only a convenience for that browser.
Report a reproducible fault with the challenge number, chosen movement, selected route and expected result. The contact form prepares an email draft for review; it does not automatically deliver a ticket or promise a response deadline.