Bored by sudoku number-crunching? Tired of crosswords requiring arcane knowledge? This collection of over 400 codeword puzzles provides the perfect antidote!
The Mammoth Book of Codeword Puzzles is a truly bumper collection of these hugely popular puzzles - also known as codewords, cipher crosswords and cipher word puzzles. There are also some fun variations in the form of dropouts, keywords, coded quotes and long diversions.
In a codeword puzzle, each grid is made up of numbered squares, with each number corresponding to a letter of the alphabet. A few letters are given, but the rest must be discovered by using logic and word power to crack the code.
HOURS OF STIMULATING PUZZLE FUN!

Nathan Haselbauer (1975--2015) was the founder and President of the International High IQ Society. Among his innovations is the Test for Exceptional Intelligence, one of the most difficult and popular high-ceiling intelligence tests available.