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AI · March 14, 2024

Chess-LLM, using constrained-generation to force LLMs to battle it out

As I was playing with the Outlines library (https://outlines-dev.github.io/outlines/), I discussed with my friend Maxime how funny it would be if we set up a way to pair LLMs in chess matches till one wins. The first time I tried it, it required substantial prompt engineering to get some of those LLMs to propose valid moves. Large language models can mostly stay focused and even play rather well; see https://news.ycombinator.com/item?id=37616170 for example. However small language models aren't as easy to convince. Some of those LLMs have seen very little…

Chess-LLM, using constrained-generation to force LLMs to battle it out launched on March 14, 2024 with 7 votes, #1,840 of 4,270 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.

What it does

Play a chess match between two AI models by entering their IDs. Watch the game progress in real-time and see the result update the leaderboard.

In the maker’s words, at launch

As I was playing with the Outlines library (https://outlines-dev.github.io/outlines/), I discussed with my friend Maxime how funny it would be if we set up a way to pair LLMs in chess matches till one wins. The first time I tried it, it required substantial prompt engineering to get some of those…

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