3.1.4 Symmetrical Crossword Puzzle
In the USA, barred crossword puzzles are very popular. They are a sub-class of the classic puzzles.
The symmetrical crossword puzzles have the following properties:
- The puzzle is squared and the dimension is of 15x15, 17x17, 19x19, 21x21 and 23x23 of size.
- Blocks are arranged symmetrically.
- Shortest words are of length 3.