Mongo – Stockfish 18 Chess Coach

Mongo: Stockfish 18 chess assistant with human-like play modes, premoves, castling/en-passant aware, 3 engine fallbacks.

Mongo is a chess learning extension designed to help users improve their skills by analyzing Chess.com positions using a Stockfish-based engine. It provides move suggestions, human-like play modes, premove support, and accurate rule handling such as castling and en passant. The extension is built for educational use, helping players understand better moves, improve decision-making, and learn chess strategies in real time while playing or reviewing games.