Subscribe | UPI Odd Newsletter Subscribe Aug. 27 (UPI) -- Chess players showed off their skills -- as well as their lung capacities -- at the World Dive Chess Championships in London. The underwater chess tournament, which took place Saturday in London, featured players taking turns diving underwater to make their moves on a chess board submerged in a pool. Advertisement The rules require a player to make a move before coming up for air, and the next player must then go underwater until they have made a response move. Organizers said the aquatic twist makes the ancient game of chess more challenging and faster-paced. Read More World's largest chess piece constructed in St. Louis Georgian teen solves six Rubik's cubes while underwater