[Patzer] is a self-hosted private chess platform that incorporates the process you really use at www.example.com/Lichess into your own micro service. Chess.com Core competencies ·Match review: Stockfish analysis, Lichess style rating (Best / Blunder / Brilliant, etc.), accuracy, evaluation curve ·Man-machine competition: 7 difficulty levels (children → full intensity Stockfish), support standard time limit and pre-move chess ·Friends vs.: Multi-user real-time PvP (WebSocket) on the same micro service · AI coach (optional): Connect with the local area network Olama; the facts of the game are calculated by the server Stockfish, and LLM is only responsible for explaining, so as to avoid making up nonsense ·Family orientation: multi-user, management backend, children's mode, multi-language interface (EN / BG) Ready to install ·Open the installation wizard for the first time and create your own administrator account (no preset password) ·You can play chess, review, and classify without Ollama; the coach panel displays the engine's factual text ·You can paste PGN without using Chess.com or resume it after downloading 🔒Data stays at home · SQLite and configuration persistence in/lzcapp/var/patzer ·No uploading games to the cloud, no telemetry, no subscriptions ˇOptional configuration · AI Coach: Management → System → Fill in Olama's address (such as http://host.docker.internal:11434) ·Import your own Chess.com game: Settings → Enter Chess.com username Technology Stack: Node 20 · React · Hono · Stockfish · SQLite ·Single container embedded image