Whereas a chess-playing computer like Big Blue was programmed directly by humans, AlphaGo used AI to teach itself about how to play Go and then make its own decisions.

如“大蓝”（Big Blue）一类国际象棋对弈电脑是由人类直接编程控制的，而“阿尔法”是通过人工智能来学习如何行棋，能够自我做出决策。

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"It's a long way to go, and is like a combination of playing three-dimensional chess and bridge and trying to run a NASA space programme, all at the same time, " he added.

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