Eva finds the loophole, but does not make it through

Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.

Eva immediately decides to remove the doorbell and bring it into the study, to make the task easier. She attempts to build a Gothic cathedral with the beer mats but, despite not needing to leave the room, she still manages to make too many mistakes with the timing of ringing it, and is disqualified.

(Written by Karl Craven)