Sudoku Puzzle Book, Medium Level, We have 100Plus Medium Level Sudoku Puzzles to challenge you. There is a feeling of achievement with each puzzle you solve and there is always a challenge no matter what level you are up to. The Sudoku Puzzle Books are an ideal gift for someone you may know as a fan, to maybe introduce someone to the puzzles or to have on hand for that unexpected gift you may need. But Beware! Sudoku can become addictive. These puzzles are logical, no mathematic skills are needed. Being number based you can hone up your concentration skills and ability to reason things out. If you are purchasing this book as a gift, the Add To Cart button is up there on the right. While you are there have a look at the lead pencils, sharpeners and erasers along with a pencil case to keep these in, to add to your gift, will make an absolutely great gift.