The Puzzle Doctor: Sudoku Mania: 150 Easy to Hard Sudoku Puzzles

America has got a fever...and the only prescription is more sudoku! First there was "Sudoku Fever," now puzzle fans have come down with Sudoku Mania. But this next title in the series is the perfect cure. Features:
- 150 easy to hard sudoku puzzles
- Edited by legendary "New York Times" crossword editor Will Shortz""
- Big grids with lots of space for easy solving