Mirror

A mirror tournament is a tournament where the host obtains the question set from a different tournament rather than writing the questions itself. For example, the 2013 Yale BHSAT tournament had a main site at Yale, which is *not* a mirror site, but other tournaments outside Yale which agreed to use the set, such as ATROPHY at Northern Illinois University, *are* "mirrors" of the original set. In the strictest definition of a mirror, the host team does no editing or writing (and, if it's a college event, participating teams do not submit packets); in its looser, more common definition, participating or host teams are often required to submit packets regardless of whether they attend the main site or a mirror. Recently, the term "mirror" has expanded even more broadly to merely mean "site where a question set is used," including the main site.

The four nationwide regional tournaments ACF Fall, ACF Regionals, TRASH Regionals, and NAQT Sectionals are not traditionally considered mirror tournaments, since the editing comes from a single centralized source not directly affiliated with any particular regional tournament. However, schools that host these tournaments are often known as mirror sites.