Sudoku Puzzels Book

Sudoku is not just a good game as a hobby and relax, but also great to improve memory, critical thinking, logic and problem solving, this large Sudoku puzzle book contains more than 300 hard puzzles will provide your mind with fun and relaxation. Details about this sudoku book
?Lots of sudoku puzzles: 320 Sudokus.
?4 problems per page and answers at the end of the book.
?largeur print than most newspapers Easy to tear out, thanks to wide margins.
?Size of the book: 8.5 X 11.