The Queen's Gambit was an squad of elite OriCon rigger pilots during the Golden War. The Gambit was assigned to the joint OriCon/Diaspora taskforce near the end of the war. After the Battle over the Sea of Counterweight the unit was disbanded.
Tea and several other members of the gambit went on to form the Mercenary group The Weightless.
Even more recently the OriCon Expeditionary Force has approached Tea and convinced her to re-enlist to lead a reformed the Queen's Gambit as a publicity move.