Dan Croker has two obsessions - Sudoku and frogs. So he just had to combine his loves and make the Famous Frog Sudoku books. Take a break and relax with this Beach Bum Sudoku Series book containing 500 very hard puzzles. With only 4 puzzles page page there is plenty of room for notations. The fun and colorful cover is sure to brighten your day. Of course, you don't have to be on the beach to do these puzzles! Solutions are given at the end of the book. Look out for many more Famous Frog Sudoku books.