— 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
Competent generic Archimedes demo with correct physics and ASCII animation, but entirely ignores the core prompt requirements: no two crowns, no pure-gold vs. gilded comparison, no vertical submersion slider, no fall animation, no Heureka moment, and dark background violates light-bg constraint.
7,117 output tokens · claude-opus-4-6 · end_turn
Competent generic Archimedes demo with correct physics and ASCII animation, but entirely ignores the core prompt requirements: no two crowns, no pure-gold vs. gilded comparison, no vertical submersion slider, no fall animation, no Heureka moment, and dark background violates light-bg constraint.