Strong fingerprint match for Next.js, a web framework. A framework on its own says nothing about whether AI helped write the site: Next.js is used by hand-coding developers and AI tools alike, and no AI-tool artifacts were found in the delivered code.

Google has stated it does not penalize a site simply for using AI tooling during development — its Search Essentials guidance targets scaled content abuse (mass-produced, low-effort pages meant to manipulate rankings), not the use of an AI website builder itself. Whether sudokubank.com/puzzles/d64314a3-23a9-4e28-a6f0-8a300d516960 ranks well depends on the same signals it always has: real content, genuine business information, and what Google calls E-E-A-T — Experience, Expertise, Authoritativeness, and Trustworthiness — independent of which tool assembled the page.