self-mate

[ self-meyt ]
/ ˈsɛlfˌmeɪt /

noun Chess.

a move that will cause a player's king to be mated within a certain number of subsequent moves.

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Also called suimate.

Origin of self-mate

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020