Sudoku: Estrategia y Logica = The Big Book of Sudoku

Sudoku has become the hot new puzzle craze. What are they? Logic puzzles that just happen to use numbers. All you do is fill in a grid so that every row, column, and 3 x 3 box contains the numbers 1 through 9...and there's only one solution to each puzzle! Everyone can enjoy them. You don't need to be a math whiz to solve them. You need only a pencil to play. The book features 200 brand new puzzles, increasing in difficulty, it also contains tips and basic rules to get you started.