The phrase refers to crossword puzzles characterised by an exceptionally excessive diploma of issue and complexity. These puzzles typically make use of obscure vocabulary, intricate wordplay, and unconventional clue buildings to problem solvers. A puzzle requiring deep data of trivia, anagram fixing abilities, and lateral pondering could possibly be described utilizing this phrase.
The significance of tackling exceedingly troublesome crosswords lies of their capability to reinforce cognitive talents, develop vocabulary, and foster problem-solving methods. Traditionally, the creation and fixing of advanced phrase puzzles have been related to mental stimulation and psychological acuity, offering a rigorous psychological exercise and a way of accomplishment upon completion.