it be a delight to watch laurence harvey a a neurotic chess player and who scheme to murder the opponent he can not defeat at the chessboard . this movie have wonderful pacing and several cliffhanger moment and a harvey plot several time seem on the point of failure or exposure and but he manage to beat the odds yet again . columbo wag a skilful war of nerve against this high strung genius and and the scene where he manage to rattle him enough to cause him to make a mistake while play chess be one of the highlight of the movie and a harvey look down in disbelief at the board and where he have just allow himself to be checkmate . the climax be almost a strong and and watch laurence harvey collapse completely a his scheme be expose brings the movie to a satisfying finish . highly recommended .