The other six split up to look for four brainteaser puzzles placed at the fort. Kris and Nathan needed to buy the answer to solve the first brainteaser, costing $1,000. The teams have to solve a brainteaser first before continuing. It's a bracing brainteaser with the courage of its own ambiguity. Several games shows also film in the city, including "BrainTeaser" and "Deal or No Deal". Each duo solved the third brainteaser without help from the host. Francis has also appeared on "Turnabout", "BrainTeaser" and "Eggheads". Each brainteaser had to be successfully solved before they could move on. Until March 2007, the station screened quiz show "BrainTeaser" which was presented by Alex Lovell. Since then he presented BrainTeaser, taking turns with Alex Lovell throughout 2005.