✓ 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
Remarkably complete ASCII-art implementation with correct physics (Au 19.3, gilded 13.0 g/cm³, same 1000g mass, proportional displacement), but the slider is technically vertical via CSS writing-mode rather than a clean native vertical input, and splash particles are randomly triggered on slider delta rather than on crown entry into water.
7,635 output tokens · claude-opus-4-6 · end_turn
Remarkably complete ASCII-art implementation with correct physics (Au 19.3, gilded 13.0 g/cm³, same 1000g mass, proportional displacement), but the slider is technically vertical via CSS writing-mode rather than a clean native vertical input, and splash particles are randomly triggered on slider delta rather than on crown entry into water.