— 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 visualizer (density/size sliders, force arrows, bubble animation) but entirely misses the prompt: no two crowns, no vertical immersion slider, no fall animation, no splash, no rising water level, no Heureka moment, and the background is dark not light.
8,868 output tokens · claude-opus-4-6 · end_turn
Implements a generic Archimedes buoyancy visualizer (density/size sliders, force arrows, bubble animation) but entirely misses the prompt: no two crowns, no vertical immersion slider, no fall animation, no splash, no rising water level, no Heureka moment, and the background is dark not light.