Pocket PoshA(R) Sudoku 10 combines a wonderfully attractive package with 100 Sudoku puzzles in 3 difficulty levels. The Posh and Pocket PoshA(R) puzzles series have over 3 million copies in print since their inception in May 2008. "Pocket Posh Sudoku 10" offers 100 Sudoku puzzles expertly presented in 3 varying levels of difficulty.