Will Shortz Presents the Epic Book of Extreme Sudoku

The only thing better than a Will Shortz sudoku puzzle is 300 of them! You can challenge your mind and put your solving skills to the test with this perfect collection of deviously difficult puzzles. And with 300 puzzles, this collection is sure to provide hours and hours of fun for even the most avid sudoku fan. It is edited by legendary "New York Times" crossword editor Will Shortz. It features big grids with lots of space for easy solving.