The document outlines the schedule and format for a challenge competition held at Yishun Secondary School on May 25, 2010, which included registration from 10:00-10:30, an opening ceremony at 10:30, preliminary rounds from 11:00-11:30, regrouping for final rounds from 11:30-11:45, final rounds from 11:45-12:15, prize presentation and lucky draw from 12:15-12:45, and light refreshments from 12:45-1:30. The competition involved two rounds, a preliminary round with teams of two players each at tables of four teams striving for the highest table score, and a final round between the top 64 teams resh