Protocol
Round 3 pilot cell. A square production icon sheet on a fully transparent background. Deterministic targets (graded by a separate grader, never the generator): the output PNG must carry a real alpha channel; the transparent-background fraction (fully transparent pixels over total pixels) must be at least 0.60; the substantial horizontal alpha-group count must equal exactly 4; no icon may touch any image edge (a fully transparent border ring must exist). Prompt bytes are frozen; the prompt_sha256 is recorded in docs/ROUND3_PLAN.md.
Frozen prompt template
CONTROL PROMPT R3-ICONS-001. A single square 1:1 production icon sheet on a fully transparent background with a real alpha channel, no backdrop, no canvas fill, no solid color behind the artwork. Exactly four separate flat vector-style icons are arranged in one horizontal row, evenly spaced, not touching each other and not touching any edge of the image, each roughly equal in size and centered vertically. Left to right the four icons are: (1) a skeleton key, (2) a cog gear wheel, (3) an owl head, (4) a padlock. Every icon is rendered in a consistent two-tone palette of aged brass and midnight navy with a consistent stroke weight. There is no background color, no drop shadow, no gradient behind the icons, no text, no labels, no numbers, no frame, and no extra icons. Output a transparent PNG.Review rubric
- Prompt Adherence
- Transparency Quality
- Count Accuracy
- Edge Quality
- Artifact Severity
Notes
Screening pilot executed 2026-07-26 with two unseeded repetitions for each available OpenAI endpoint policy. Alpha existence, transparent fraction, horizontal alpha-group count, and edge touching are computed deterministically from returned pixels. All four OpenAI artifacts were opaque RGB PNGs and failed the alpha requirement. xAI cells are incomplete because the authenticated image route returned HTTP 403 and the stop gate prevented further retries. No global ranking may be claimed at N=2 reps per completed cell.
