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Upon successfully solving a chess puzzle, the mascot Oscar reacts with delight. His mustache dynamically morphs and curls upward into a wavy, cheerful shape, accompanied by a happy facial expression. Simultaneously, the progress bar at the top fills with a smooth spring animation, and a 'Combo x2' badge pops in above it. This interaction serves as a rewarding feedback loop, reinforcing the user's success through character animation.
