USA TODAY Sudoku Super Challenge 3 (USA Today Puzzles)

From the original publisher of daily Sudokus in the United States, USA TODAY presents 200 all-new Sudoku puzzle challenges in five difficulty levels.

USA TODAY Sudoku Super Challenge 3 is a collection featuring 200 Sudoku puzzles in five difficulty levels from USA TODAY--the nation's newspaper.

Features include:

• Introductory how-to section
• 200 9 x 9 Sudoku puzzles
• Comprehensive answer key