1 or 3 m high. Contestants are required to do certain of the listed dives, as well as several of their own choice. 10 judges score each dive, with attention paid to takeoff, bearing of the body in the air, execution of the prescribed movements, and entry into the water. The scores for each dive are totaled and multiplied by the degree of difficulty. The diver with the highest total score for all dives at the end of the contest is the winner.
Women make the same five voluntary dives, but only five optional dives.
Platform events require 10 dives from men and nine from women. Competitive dives are divided into five groups, with the addition of arm-stand dives done from fixed platforms only. The first includes the forward dives, in which the person faces the water, dives out from the edge of the board or platform, and rotates forward one-half or more turns before entering the water. The second comprises the backward dives, in which the diver stands at the edge, facing away from the water, then springs and rotates backward. The third is the reverse group, in which the diver takes off in the forward position but then reverses his spin toward the board.