Items Authored by Isao Umebayashi Our new RSS feed! Play! Open Invitations Contact us About us What's New? Main Index Alphabetical Index Recognized Variants How you can help Become a member Links (By Date) Yahoo! Clubs: Chessvariants. Our original Yahoo! message board. Ratings/Feedback OlderRatings/Feedback Oldest Ratings/Feedback Shop Bottom of page INVALID INPUT REJECTED. The generation of SQL has stopped without finishing, and the database has not been queried.Invalid value for type.