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Spending 10 months building the most human-like chess bot

Chessbook-1, Maia-3 and Allie 2.0 at a glanceCapability scorecard: a 0-100 grade per measurement, and whether the model has the capability at all. Predicting human moves Matching strength Time scramble play Predicting think time Predicting who wins Chessbook-1 199M parameters 96 / 100 81 / 100 84 / 100 98 / 100 97 / 100 Maia-3 79M parameters 85 / 100 56 / 100 57 / 100 No 80 / 100 Allie 2.0 5.6B parameters 99 / 100 48 / 100 99 / 100 73 / 100 99 / 100 Everyone knows playing against an engine like Stockfish is nothing like playing a human. The existing human-like models (Allie 2.0, Maia-3) weren’t quite right for my use case, and I became a bit obsessed with making the best one.

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