The number of permutations in a game of Go is greater than the number of atoms in the universe, so it can't be solved by algorithms that search exhaustively for the best move. For this reason, it's not just a matter of the cold calculus of a computer working out permutations.

一盘围棋所含的排列组合之多远胜于宇宙中原子数量，所以并不能穷尽搜索靠对数找到最佳的一步。因而，这不单单是冰冷的微积分，靠计算机算出排列组合。

Go was invented by the Chinese 2,500 years ago or thereabouts.It's about controlling territory on the board as opposed to chess which is about capturing the king. Both are too complex for a computer to predict every move with utter certainty, through the force of computing power. Computers - like humans - have to assess.

约摸2500年之前，中国人发明了围棋。围棋是要在棋盘上控制国土疆域，而国际象棋是要擒获国王。两者要让电脑单单靠计算的威力精确预测出每一步的走法实在是复杂。计算机和人类一样需要存取数据。

AlphaGo worked out which positions were likely to be winning ones, and then - and this is the master-stroke - it played itself repeatedly to improve its own play. So, this tournament between man and machine feels like a contest for the supremacy of the future.

阿尔法围棋算出了哪几步走法最有可能取胜，这便是大师手法，反复验证提高棋艺。所以，此次人机锦标赛便是场谁主宰未来的竞赛。

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