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Sheldon and Leonard face off in Howard's lab at the university.
The Dependence Transcendence - Season 10, Episode 3
Aired October 3, 2016.
When the guys work long hours to try finish their project for the military on time, Sheldon struggles to stay awake and turns to energy drinks to keep going. Meanwhile, Penny and Amy attend a party being thrown by Bert, the geologist, and Koothrappali helps Bernadette prepare the house - and herself - for the arrival of her baby.