1. How to Not Crack an Egg

Terry's battle of wits involves a mission to stack 100 lbs. on an egg without cracking, and an obstacle course for your memory.

3. How to Have the Last Word

Terry and Guy battle the elements in Randy's big word challenge, and test their engineering skills in a bridge build-off.

4. How to Face the Music

The geniuses try to prove their smarts by decoding Guy's gauntlet of pattern puzzles.

5. How to Know When to Fold 'Em

A paper-airplane engineering challenge is issued.

6. How to Float Your Boat

The geniuses are challenged to build a self-propelling boat using simple materials.