(exp)not straight forward; not dealt with by ordinary means→Related words:
一筋縄
先の時間に居眠りした分も合わせて、今度の試験はどうも一筋縄ではいかない感じが漂っている。 Taking into account the time I'd just spent napping, I'm really picking up the sense that this time's exam really won't be straight forward.