Watch out--these sudoku might crush even the most stalwart of solvers!

"If you have to ask, IT'S TOO HARD FOR YOU"--Cover.

SUDOKU: The hotter-than-hot puzzle phenomenon that everyone wants to play! Sudoku’s everywhere these days, and winning millions of converts worldwide. And why

With a separate sudoku book for every level, all puzzle lovers can play this wildly popular, incredibly addictive game that's appearing in major newspapers all

With every puzzle requiring upper-level strategies, this collection packs even more of a punch than Beyond Black Belt Sudoku. You'll encounter common advanced t