✓ 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
Solid ASCII-art implementation with correct physics (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000g mass), rising water levels, splash particles, and Heureka animation, but lacks smooth fall animation — crown teleports rather than animates — and the ASCII rendering is functional but visually rough with overlapping text artifacts near container edges.
Solid ASCII-art implementation with correct physics (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000g mass), rising water levels, splash particles, and Heureka animation, but lacks smooth fall animation — crown teleports rather than animates — and the ASCII rendering is functional but visually rough with overlapping text artifacts near container edges.