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Not exactly a household name, but as [IEEE Spectrum] points out, he invented a chess ... hiding inside a fake chess computer. The Spanish engineer’s machine really did play a modified end ...

In chess as in life, people use memory as a shortcut for decision-making. That strategy can backfire when the present doesn’t resemblance the past.

"Perhaps more fascinating to me than the games I was playing ... He later invented AlphaZero in 2017, an AI algorithm that needed only the rules of chess and four hours of playing against itself ...