HTML Haiku #09
2.6
Evaluation
2.6 avg
2.5 physics accuracy
5.5 design quality
2 animation quality
2 slider ux
1.5 completeness
2 overall
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

Completely off-brief: implements a generic single-object buoyancy toy with horizontal sliders instead of two crowns (pure gold vs. gilded) with a vertical immersion slider, missing every crown-specific requirement — no crowns, no Heureka moment, no fall/splash animation, no density comparison, no vertical slider.

4,470 output tokens · claude-haiku-4-5-20251001 · end_turn

Completely off-brief: implements a generic single-object buoyancy toy with horizontal sliders instead of two crowns (pure gold vs. gilded) with a vertical immersion slider, missing every crown-specific requirement — no crowns, no Heureka moment, no fall/splash animation, no density comparison, no vertical slider.