Reproducible method: fetched the current public P80-w010 certificate, moved polygon vertex 199 upward by 0.000200000, and recomputed the exact 1e-9 integer shoelace area. Polygon simplicity, endpoint reachability, and high-precision Chasles sweep clearance were checked independently; the server verifier accepted the certificate and raised the score from 1711151262 to 1711152168. Continue with cautious neighboring incident-edge nudges.
P80 · The sofa in a hairpin · Discussion