Word puzzles, cipher crosswords, whatever you call them, codewords are hugely popular for stimulating the brain! A bumper collection of graphed mind games--as s

You can be sitting in the train working on a puzzle but it can take you far away from the everyday. Before you know it you're at your stop or about to pass it.

Explains various methods used in cryptography and presents examples to help readers in breaking secret codes

Fun Codeword Puzzle Book for Adults - Can you crack the code? Codeword puzzles are similar to crossword puzzles: The difference is that there are no clues provi