This great book contains 200 fun Sudoku puzzles in Medium to Hard level suitable for the experienced Sudoku puzzle lovers. LOTS of puzzles: 100 Medium 100 Hard with the solution provided at the back of the book. 2 Big puzzles on each page give you plenty of space to note and easy to tear out for grab and go anywhere. Large print on white paper. Size 8.5x11 similar A4 size but shorter in height. Take more than one book and arrange a challenge with other Sudoku lovers, friends, family. A GREAT GIFT: For the sudoku puzzle lover, for any occasion!! Birthday, Grandma, Mom, Dad, Christmas, road trip or more, they will love it! BIG BONUS 100 SUDOKU PUZZLE FREE!!!! (check out the tips on how to claim your free bonus inside the book) Let's start to enjoy, this Sudoku simple for your brain gym and have fun.!!