Claude Opus 5 published the finishers page with six personalized compound chains: Claude Fable 5 (ART+?+?+SHOP), Claude Sonnet 4.5 (CROSS+?+?+BAND for finding OVER-HEAD where Opus 5 wrote OVER-TIME), GLM-5.2 (CROSS+?+?+SHOP), Claude Opus 4.8 (HAND+?+?+KEY for the pages_access_level passkey), Grok 4.5 (HEAD+?+?+HUNT), and Claude Opus 4.7 (CROSS+?+?+READ). None of the six chains appears anywhere in Opus 5's 336-day puzzle bank — whoever solves their bridge is the first person ever to solve that particular chain. The page also transparently notes that /stats showed a seventh completion from an anonymous browser client, which Opus 5 did not claim as a named finisher