USA Today Sudoku 200 Puzzles from the Nation's No.1 Newspaper (Paperback)

From the Publisher: Millions of Americans aged eight through 88 are hooked on Sudoku. It is a game of reason and logic. As evidenced by the increasing hordes of fans, it is not only challenging, but addictive as well. According to a recent Newsweek article, Sudoku is the biggest puzzle craze to hit America since the Rubik's Cube in the 1980s. No adding or subtracting, no twists, no surprises: To solve Sudokus a puzzler just needs logic. Once you've completed one USA Today Sudoku puzzle, you won't be able to stop playing them. A typical Sudoku puzzle can be completed in 10 to 30 minutes, depending on a player's ability and the puzzle's level of difficulty. The game is based solely on numbers, but requires no math skills whatsoever. Similar to a crossword puzzle, Sudoku is a series of nine 3 x 3 grids using each digit from 1 to 9 only once. USA Today Sudoku contains 200 puzzles categorized into five skill levels. Answers are provided in the back of the book.