Black Sphinx Challenge

The Black Sphinx Challenge (also styled the Black Sphinx Cup) was an organization-wide competition within The Royal Manticoran Navy: The Official Honor Harrington Fan Association, Inc., introduced in 2017 as the successor to the Tenth Fleet-internal Talbott Cup (2016). Chapters competed across events such as Gunnery and Reconnaissance, with winners recognized by unit citations. It was in turn succeeded by the Grand Alliance Unit Excellence Program (GAUEP).