Chesssy
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Load a game and click "Analyze Game"

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Configure your Lichess account for opening explorer and LLM keys for explanations.
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For local models, use Ollama or LM Studio. For Claude, run a local OpenAI-compatible proxy on port 8000. For cloud APIs, you may need a CORS proxy: npx local-cors-proxy --proxyUrl https://api.openai.com