The World's Longest Sudoku Puzzle - Book
Type: Sudoku and Others Like It
Dimensions: 7 in x 6 1/3 in x 1 in / 17.6 cm x 17 cm x 2.6 cm
Author: Frank Longo
ISBN: 1402737629
EAN: 9781402737626
For those who find regular sudokus too easy, this huge puzzle adds excitementto the popular game.