The Super-Colossal Sudoku Challenge: 300 Wordless Crossword Puzzles by Will Shortz
Challenge your mind and put your solving skills to the test with this perfect collection of easy to hard puzzles. And with 300 puzzles, this collection is sure to provide hours and hours of fun for even the most avid sudoku fan. It features 300 captivating sudoku. It is edited by legendary "New York Times" crossword editor Will Shortz. It contains big grids with lots of space for easy solving.