There are several synonyms for the word "jigsaw", which is often used to refer to a puzzle or problem that requires careful and methodical solving. Some of the most common synonyms for "jigsaw" include "puzzle", "brain-teaser", "riddle", "mystery", and "enigma". These words all suggest a challenge that requires careful thought and strategic planning in order to solve. Other possible synonyms for "jigsaw" might include "conundrum", "puzzle piece", "game", "challenge", and "brainteaser". Regardless of the specific term used, the concept of a jigsaw suggests something that requires careful analysis and attention to detail, as well as creative thinking and problem-solving skills.