Figuring out why AIs get flummoxed by some games
Summary
Ars Technica reports on research showing that training methods that work for chess and Go do not transfer to impartial games like Nim. The Nim study demonstrates that AlphaGo/AlphaZero-style self-play struggles to learn the parity function needed for optimal play, especially as board size increases, revealing a fundamental limitation in current self-learning approaches. The findings highlight the necessity of symbolic reasoning or alternative training strategies for certain problem classes and have implications for AI applications requiring mathematical or logical reasoning.