Mastered sudoku but want to take it to the next level? ESPN Baseball Sudoku puts a new spin on the wildly addictive puzzle phenomenon. In Baseball Sudoku, 9 x 9 puzzle grids are solved using traditional sudoku techniques, but here the nine numbers are replaced by the starting positions on a baseball lineup: P, C, 1B, 2B, SS, 3B, LF, CF, RF.

The 200 sports sudoku puzzles are arranged by difficulty level-Little League (Easy), Minor League (Medium), and Major League (Hard), Hall of Fame (Expert)-and require no math skills or baseball knowledge, only logic. (The book is also filled with some bonus All-Star puzzles-sudoku grids composed of nine letters arranged in anagrams, which, when solved correctly will reveal the name of a famous athlete.) With an easy-to-follow introduction explaining how these new puzzles work, this is sudoku as you've never played it before.