The original puzzler! Classic Chuzzle is available in two difficulty settings: Casual and Expert. (When you play Chuzzle for the first time, the game will default to Classic Chuzzle in the “casual” difficulty mode.)
In both the Casual and Expert modes, all Chuzzle characters and features are represented. You are given two Scrambles at the beginning of the game, with the possibility to win more. (See “Scoring” section.) The frequency of the Puzzle Locks will ease-in during Casual mode, while they will be fast and furious in Expert.
(Also, you may find the Chuzzles to be "less helpful" in the expert mode.)