Spending 10 months building the most human-like chess bot

Marcus Buffett details Chessbook-1, a 199M-parameter transformer trained on a year of Lichess games, and benchmarks it against Allie 2.0 and Maia-3 on predicting human moves, matching playing strength at every rating, erring in time scrambles and predicting how long a human would think.

Research · Machine Learning · Chess · AI · Games

StarSkirmish Bench v0.2

StarSkirmish Bench v0.2 has flagship LLMs spend one hour in their first-party CLI harness writing a StarCraft: Brood War Protoss bot in C++, scored by win rate against human-written bots. GPT-6 Astra leads, GPT-6.1 Sol offers the best value, and the benchmark shows no signs of saturating.

Research · AI · LLMs · Benchmarks · AI Agents