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SELECT * FROM `Item` LEFT JOIN `IndexEntry` USING (ItemID) WHERE FIND_IN_SET(:'Commercial',`Categories`) AND `IsHidden` = 0 AND `Item`.`IsDeleted` = 0 AND `YearInvented` >= '1974' AND `YearInvented` <= '1976' AND `Language` = 'English' ORDER BY `LinkText`, `Item`.`Summary` ASC LIMIT 500 OFFSET 0
- Ministers Chess. Commercial variant on a 9x9 board with an extra Queen (called a Minister). Author: Greg Strong. Inventor: Michael Corinthios.