For instance, the word mirror is written with reflectional symmetry; symmetry reads the same upside down; and infinity spirals off to infinity. The accompanying essays connect mathematics and symmetry with art, psychology, and music. One of the sections shows students how to create their own inversions.

    English crossword puzzles are different from American ones. In place of definitions, they offer clues which have to be solved, clues which exploit the deviousness of the English language in order to create a game of wits.In the clues, every effort will be made to mislead you purely through the use of language. The answers will be common words; if unusual words are used, they will be labeled. Forget those five-letter words for 'Bantu hartebeest'. You will be called upon to use your head, not a dictionary. It will not hurt, however, if your head contains a devious mind.One of the most enjoyable features of these puzzles is that each has a gimmick of some sort, fully explained in the puzzle's instructions, which you will have to solve or work out in addition to solving the clues. These puzzles have one thing that normal crosswords never have: a satisfying conclusion - when the mystery of the gimmick is fully unraveled and all the pieces of the puzzle suddenly fall together.

    Countless twists, turns, and deceptions are included but there are no dead ends. The author provides the shortest possible solution. Hours of enthralling amusement for maze fanatics of all ages. Instructions.