Computer chess machines, to some extent, get to have it both ways. They use heuristics to prune their search trees, focusing more of their processing power on more promising branches rather than calculating every one to the same degree of depth. But because they are so much faster at calculation, they don’t have to compromise as much, evaluating all the possibilities a little bit and the most important-seeming ones in greater detail. But computer chess programs can’t always see the bigger picture and think strategically. They are very good at calculating the tactics to achieve some near-term
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