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[ARTICLE · art-59776] src=lesswrong.com ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

Watch a chess transformer think

A new companion app visualizes the internal workings of a chess transformer model that mimics human play, allowing users to explore attention heads and residual stream evolution. The tool, linked from a GitHub repository by David-31415, provides interactive insights into the model's decision-making process.

read1 min views45 publishedJul 15, 2026
Watch a chess transformer think
Image: Lesswrong (auto-discovered)

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https://github.com/David-31415/chessformer_interp/blob/main/README.mdI was poking around at a chessformer which mimics human play and made this fun companion app to visualize a lot of the internals of the engine. Check out how attention heads look, how the residual stream evolves, and play around with it if interested!

source & further reading
lesswrong.com — original article Q2.5 2026 Timelines Update: Uplift and Revenue Case for Funding AI Safety in Japan Will There Be an AI Hegemon? A Mental Model for AI Power Concentration
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