Test fixture

Breakout Game

Coding Uihardscorer: singlefile_html_cdn_allowed_judged

How it is scored

The model receives the prompt (and optional system message). The run uses scorer singlefile_html_cdn_allowed_judged with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

User prompt

Create a single-file HTML document that implements a playable Breakout / Arkanoid-style game. Requirements: (1) Return exactly ONE complete runnable HTML document and NOTHING else — no markdown fences, no commentary. (2) Start with <!DOCTYPE html> and include <html>, <head>, <body>, inline <style>, and inline <script> using requestAnimationFrame and a <canvas>. (3) Gameplay: paddle moves with both ArrowLeft/ArrowRight and mouse/touch; ball bounces off walls, paddle, and bricks; bricks disappear on hit; score counter and lives counter visible; win screen when all bricks cleared; game-over screen when lives reach 0; restart button or key. (4) Include keyboard handling with keydown/keyup listeners and proper delta-time or frame-based movement to keep gameplay smooth. (5) Use only inline CSS and inline JS; no build step. (6) You MAY load libraries from https://cdn.jsdelivr.net, https://unpkg.com, or https://cdnjs.cloudflare.com via CDN. (7) Polished UI: clear HUD, pleasant color palette, at least 4 rows of bricks with multiple colors, particle/flash feedback on brick hits. (8) No TODOs, placeholders, or lorem ipsum. Must open directly in a browser and be fully playable.

Scorer config

{
  "min_chars": 2500,
  "required_contains": [
    "<canvas",
    "requestAnimationFrame",
    "addEventListener"
  ],
  "requires_one_of": [
    "keydown",
    "keyup",
    "ArrowLeft",
    "ArrowRight"
  ],
  "forbidden_contains": [
    "```",
    "TODO",
    "lorem ipsum",
    "your content here"
  ],
  "allowed_cdn_hosts": [
    "cdn.jsdelivr.net",
    "unpkg.com",
    "cdnjs.cloudflare.com"
  ],
  "playwright_enabled": true,
  "judge_enabled": true,
  "required_selectors": [
    "canvas"
  ],
  "requires_canvas": true,
  "requires_controls": true,
  "viewport_width": 1280,
  "viewport_height": 900,
  "render_wait_ms": 2000
}

Run parameters

temperature

0.2

max_tokens

12000

timeout (s)

240

type

scored

file

breakout_game.json

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