# Watch a chess transformer think

> Source: <https://www.lesswrong.com/posts/3fSFFQvdDu4ABWAbk/watch-a-chess-transformer-think>
> Published: 2026-07-15 00:43:00+00:00

This is a linkpost for

[https://github.com/David-31415/chessformer_interp/blob/main/README.md](https://github.com/David-31415/chessformer_interp/blob/main/README.md)I 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!