✓ 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
All required features are present and physically coherent (Au 19.3 g/cm³, gilded 13.0 g/cm³, same 1000 g mass, correct displacement ratio), but the ASCII-art rendering approach limits visual clarity and the dead first `render()` function is never cleaned up, leaving redundant code.
9,514 output tokens · claude-opus-4-6 · end_turn
All required features are present and physically coherent (Au 19.3 g/cm³, gilded 13.0 g/cm³, same 1000 g mass, correct displacement ratio), but the ASCII-art rendering approach limits visual clarity and the dead first `render()` function is never cleaned up, leaving redundant code.