✓ 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 (Au 19.3 g/cm³, gilded 12.1 g/cm³, same 1000 g mass), live data panel, rising water levels, splash effects, and a Heureka overlay — but crown movement is positional-only with no smooth fall animation, and the vertical slider direction relies on browser-specific `writing-mode: bt-lr` behavior that may invert on some browsers.
9,469 output tokens · claude-opus-4-6 · end_turn
Solid ASCII-art implementation with correct physics (Au 19.3 g/cm³, gilded 12.1 g/cm³, same 1000 g mass), live data panel, rising water levels, splash effects, and a Heureka overlay — but crown movement is positional-only with no smooth fall animation, and the vertical slider direction relies on browser-specific `writing-mode: bt-lr` behavior that may invert on some browsers.