Also known as:
An extremely unusual type of crossword, consisting of an irregular grid that contains just 26 letter spaces, one for each letter of the alphabet. The puzzle was invented by John Halpern. Naturally, given the restriction, it is difficult to avoid repetition when compiling the puzzle.
A simpler version of this puzzle takes the form of a fitword. A grid of regular design, but partially completed, is provided. Twenty-six blanks are left for the solver to complete, one for each letter of the alphabet.