Following on the heels of the popular Total Sudoku, the second installment, JUMBO SUDOKU includes over 350 brand new puzzles. The numerical brainteaser is sweeping the nation – it’s positively addicting! This collection, which ranges in difficulty from the gentle through the tough to the diabolical, is the most extensive on the market. JUMBO SUDOKU includes circular and giant 16 x 16 grid puzzles along with the regular puzzles ranging in levels from easy to fiendish. Every puzzle is an oversized grid so you have extra room to help you solve – a real treat for puzzle lovers! Sudoku puzzles continue to be picked up in top newspapers across the country and are already featured in USA Today, NY Post, Washington Post and the LA Times…with many more sure to follow. With every puzzle being completely different Sudoku is sure to appeal to puzzle-fans of all levels.