"Idiot's Mate" is a 1968 science fiction short story by Robert Taylor. It was first published in Amazing Stories .
A chess tournament is held on the Moon — but instead of pieces, the game uses people in spacesuits, who wield guns with explosive bullets.
"Idiot's Mate" was a finalist for the Nebula Award for Best Short Story of 1968. [1]
Galactic Journey found it to be "a bit overwritten, but capably so," and noted that it "moves fast". [2]
Mike Ashley has assessed it as "almost certainly" the most popular story published in Amazing Stories under the editorial tenure of Harry Harrison. [3]