This episode sees Victoria Coren Mitchell and teammate Maisie Adam go head to head with Johnny Vegas and Krishnan Guru-Murthy. As always, the teams are joined by science brainbox and comedian Ria Lina.In a gripping experiment, a strongman is challenged to rip 10 decks of playing cards with his bare hands. An investigation into the effects of alcohol on the body leaves Maisie and Krishnan disoriented and out of control as they race to complete an obstacle course. Victoria and Johnny take on the UK's current speed cubing champion in a round called Shape Sorter versus Rubik's Cube. And in an explosive game of Fireworks Versus Water, the teams try to work out which will do the best job of launching a wheelie bin rocket into space.