— Two crowns — Same mass, different density — Vertical slider ✓ Slider works — Slider controls crowns — Slider direction correct — Full slider range — Fall animation ✓ Water displacement — Rising water level — Splash effects ✓ Physics correct — Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water — Gilded displaces more — Heureka animation ✓ No external deps — Light bg / dark text ✓ Self-contained HTML
Implements a generic Archimedes buoyancy demo with a single configurable object — completely missing the two-crown (pure gold vs. gilded) comparison, vertical dip slider, crown fall animation, splash effects, rising water level, and Heureka moment that the prompt requires; dark background also violates the light-bg constraint.
8,276 output tokens · claude-opus-4-6 · end_turn
Implements a generic Archimedes buoyancy demo with a single configurable object — completely missing the two-crown (pure gold vs. gilded) comparison, vertical dip slider, crown fall animation, splash effects, rising water level, and Heureka moment that the prompt requires; dark background also violates the light-bg constraint.