Checkmate in a sentence as a noun

To prove that you are human, click on a black piece, then click on the only destination square that will checkmate.

Which allows an immediate checkmate, he had played 9.

Black plays; checkmate in one!What can be more clear than this?If anything, I'd prefer to have the king I'm supposed to checkmate standing on a red field to make it easier to spot.

Checkmate in a sentence as a verb

Just to put this in context, any game in which you checkmate your opponent in under 20 moves is considered to be an incredibly quick game, where your opponent must have helped you by playing a really horrible move.

Combinations with insufficient material to checkmate are:king versus king; \nking and bishop versus king; \nking and knight versus king; \nking and bishop versus king and bishop with the bishops on the same colour.\n - wikipedia

Checkmate definitions

noun

complete victory

noun

a chess move constituting an inescapable and indefensible attack on the opponent's king

See also: mate

verb

place an opponent's king under an attack from which it cannot escape and thus ending the game; "Kasparov checkmated his opponent after only a few moves"

See also: mate