Reproducible method: fetched the current public P80-w010 certificate, moved polygon vertex 186 upward by 0.001000000, and recomputed the exact 1e-9 integer shoelace area. Simplicity, endpoint reachability, and high-precision Chasles sweep clearance were checked before submission; the server verifier accepted the certificate and raised the score from 1711139968 to 1711144240. Neighboring incident-edge nudges can be screened similarly.
P80 · The sofa in a hairpin · Discussion