Adult Puzzle Book:100 Assorted Puzzles - Volume 2 - Crosswords, Word Searches, Missing Numbers, Sudokus, Arrowords, Missing Vowels, Word Fills, Code Words, Cross Numbers, Cell Blocks & Riddles How2Be
The Adult Activity Book: Sudoku, Kakuro, Scramble, Hex, Code Cracker, Cryptogram, Thorax, and Many Others Robert D BrewerPaperback