Sudoku Mania #2

The game must go on! If you haven't yet discovered Sudoku, you'll be playing like a pro in no time. If you -- like millions of other Americans -- are already hooked on the game, this second book in the SUDOKU MANIA series will provide further hours of challenging, mind-boggling fun -- with four skill levels:

Painless • Tricky • Nasty • Migraine