Examples are, 'in mah-jongg, saying to have a hand which is completely different from the real one, to put the opponents off their guard or set them on their guard,' or, 'in a preliminary match of motor sports, running in a far worse time than the real ability as a strategy for putting the rivals off guard,' and so on.
たとえば「マージャンで、実際の手とは全く異なる手が出来ているように言い、相手を油断させたり警戒させたりする」「モータースポーツの予選でのかけひきで、実力よりはるかに遅いタイムを出してライバルチームを油断させる」など。