chess-postmortem-skills: Claude Code Chess Analysis Skill
A focused Claude Code skill resource that shows how to turn chess games, notes, and engine-style context into post-game analysis workflows.
Key Takeaways#
- chess-postmortem-skills is a Claude Code skill pack for turning chess games into post-game analysis workflows.
- The source project combines Claude, Stockfish-style analysis, live notes or text input, and video-style commentary around a Lichess game.
- Treat it as a practical resource for Claude skill authors, not as a standalone SaaS product or language model.
What it is#
chess-postmortem-skills is a focused GitHub resource for builders experimenting with Claude Code skills. The project grew from an experiment: can Claude use vision and chess-engine context to explain a game after the fact? The resulting workflow points Claude at a game, asks it to reason about what happened, and produces commentary that can be turned into a postmortem-style video or written analysis.
For OpenTools readers, the important part is the pattern. This is not only about chess. It shows how a narrow skill can combine domain context, external tools, and a repeatable prompt structure so an AI coding assistant can complete a richer task than a single chat response.
Why builders should look at it#
Claude Code skills work best when the task has a durable structure. Chess analysis has clear artifacts: a board state, a move history, evaluations, mistakes, candidate lines, and user notes. The repo demonstrates how to package those pieces into a reusable workflow. Builders can study it when designing their own domain skills for code review, data analysis, trading journals, design critique, or support retrospectives.
How to evaluate it#
Start by reading the README and checking the assumptions: what inputs are required, what external tools are expected, and how much work Claude is asked to do. Then inspect the prompts and scripts rather than only the final output. The durable lesson is how the skill narrows the task, grounds the model in source artifacts, and creates a repeatable postmortem format.
Best fit#
Use this as a reference if you are building Claude Code skills, multimodal review workflows, or domain-specific agent playbooks. It is less useful if you want a polished chess coaching app. The project is a builder resource: small, opinionated, and valuable because the workflow is concrete.