When different chess engines play against each other, they don’t always have the same outcome. Why not?

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This has bugged me for a bit. If chess engines are meant to always play the best moves, then how come two chess engines playing against each other doesn’t always have the same winner?

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Anonymous 0 Comments

If they would be let to play from the first moves, then yeah, they would draw every time.

However when they are put against each other, the first few moves (the opening and maybe a couple moves after) are chosen by humans and then they play as both black and white respectively. The position they are left with to decide themseleves is already into such unknown territory that it is quite impossible to know the best next move even for them.

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