9b) The official puzzles and event formats of the WCA are:
9b1) Rubik's Cube, 2x2x2 Cube, 4x4x4 Cube, 5x5x5 Cube, Clock, Megaminx, Pyraminx, Square-1, Skewb, and Rubik's Cube: One-Handed.
9b1a) Round formats for these events are: "Best of X" (where X is 1, 2, or 3), and "Average of 5".
9b2) Rubik's Cube: With Feet, Rubik's Cube: Fewest Moves, 6x6x6 Cube, and 7x7x7 Cube.
9b2a) Round formats for these events are: "Best of X" (where X is 1 or 2) and "Mean of 3".
9b3) Rubik's Cube: Blindfolded, 4x4x4 Cube: Blindfolded, 5x5x5 Cube: Blindfolded, and Rubik's Cube: Multiple Blindfolded.
9b3a) Round formats for these events are: "Best of X" (where X is 1, 2, or 3).
9b3b) For Rubik's Cube: Blindfolded, the WCA also recognises "Mean of 3" rankings and records based on the times from "Best of 3" rounds.