501 PUZZLES WITH HINTS AND FULL SOLUTIONS An amazing large collection of quotes to work out! With 501 puzzles you are sure to have many hours of enjoyment. LARG

501 LARGE PRINT CRYPTOGRAM PUZZLES WITH HINTS AND FULL SOLUTIONS An amazing collection of quotes to work out! With 501 puzzles you are sure to have many hours o

A collection of 501 humorous cryptograms from Myles Mellor, one of the most published puzzle writers of all time. These puzzles have made many readers chortle,

From best-selling author Charles Timmerman, a variety of favorite puzzles to gently engage your brain. Satisfying solvable classics include Word Search, Sudoku,

Now the most used texbook for introductory cryptography courses in both mathematics and computer science, the Third Edition builds upon previous editions by off