a chess move constituting an inescapable and indefensible attack on the opponent's king
complete victory
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"
relating to the antipodes or situated at opposite sides of the earth; "antipodean latitudes"; "antipodal regions of the earth"; "antipodal points on a sphere"