Turn a chess game (PGN file, Lichess/Chess.com URL, raw FEN, or inline PGN) into a narrated MP4 explainer video — continuous gameplay where the pieces slide move-to-move and the evaluation bar moves live. Stockfish provides truth (eval, best moves, multipv); the user (or Claude) writes natural teaching narration; edge-tts + HyperFrames produce the final animated video. Obvious moves slide by quickly, critical moments get full commentary, plus one "pause and think" puzzle — a typical game runs 5–7 minutes. Use this skill when the user shares a chess game and wants a video/explainer/walkthrough. Also invoked when the user asks to verify or check the chess-narrator setup.
2026-06-14