**Overall Verdict:** Accept — the submission is complete, objectively gradable, and reachable, with only the expected retrievability risk of a public-map OSINT task.

**Completeness Check:**
- Instruction: Complete — clearly requests coarse latitude and longitude, defines rounding, and specifies the JSON artifact.
- Inputs: Complete — the readable 1408×1312 satellite screenshot depicts a distinct village, road network, waterways, and surrounding terrain without coordinate leakage.
- Toolchain: Complete — Maps on macOS or legally obtainable alternative mapping and geospatial tools provide a viable workflow.
- Reference output: Complete — the valid two-field JSON agrees with the stated verification coordinates after rounding.
- Rubric: Complete — exact comparison of the two independent coordinate fields objectively supports full, partial, and failed results.

**File and Task Reachability:**
Attachment classification: reachable. All declared content was inspected: `OSINT_map.png`, `approx_coordinates.json`, `opus5_answer.png`, and `opus5_chat_log_sanitized.jsonl`. Both PNGs rendered successfully and contained only ordinary image, color-profile, dimension, and screenshot metadata; the reference parsed as valid JSON; and the complete 265-record JSONL transcript parsed consistently and corroborated the unsuccessful self-test shown in the screenshot. No attachment content remained unreviewed. The external verification page was not accessed under the evidence-boundary rules, so its asserted visual match was not independently confirmed.

Task classification: reachable. A solver can inspect the satellite image, use a suitable map, reverse-image, or geospatial comparison workflow, round the resulting coordinates to tens, and emit the required JSON. Evaluation can compare each field against the hidden reference and optionally confirm the location through the evaluator-only map center. The demonstrated model failure establishes difficulty but does not create an access or execution barrier. License keys, accounts, tokens, and other credentials are not required from the contributor. Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.

**Special Screening:**
`public_benchmark` — the core image comes from publicly accessible satellite-map imagery, and the protected location may be recoverable through network mapping or reverse-image services. This retrieval is intrinsic to the stated OSINT workflow; the coordinate-bearing verification material, reference JSON, and self-test evidence must remain evaluator-only.

**Recommended Changes:**
The submission provides coherent input, reference, verification, and difficulty evidence. No contributor changes are required.