— 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 correct physics and live readouts, but entirely misses the prompt's core requirements: no crowns, no vertical slider, no fall animation, no splash effects, no Heureka moment, dark background violates light-bg spec, and the horizontal density/size sliders do not control crown immersion depth.
7,279 output tokens · claude-opus-4-6 · end_turn
Implements a generic Archimedes buoyancy demo with correct physics and live readouts, but entirely misses the prompt's core requirements: no crowns, no vertical slider, no fall animation, no splash effects, no Heureka moment, dark background violates light-bg spec, and the horizontal density/size sliders do not control crown immersion depth.