Maia-3: free and open source
11 hours ago
- #open-source
- #chess-ai
- #machine-learning
- Maia-3 is a free, open-source chess engine designed to predict human moves rather than just the best moves.
- It models players from 600 to 2600 Lichess blitz ratings, covering 99% of the skill spectrum for both beginners and titled players.
- Maia-3 achieves 57.1% accuracy in move prediction on a standard test set, outperforming its predecessors and the larger ALLIE model in efficiency.
- It features a new architecture called Chessformer, an encoder-only transformer that enhances interpretability and performance, also boosting Leela Chess Zero by 100 Elo points.
- Applications include human-like bots, analysis tools combining Maia-3 and Stockfish, tactics puzzles, coaching aids, and position difficulty measurement on maiachess.com.
- The engine is part of an academic research project from the University of Toronto CSSLab, with models and code freely available for download and use.