Book excerpt: Pocket Posh® Sudoku 10 UK combines a wonderfully attractive package with 100 Sudoku puzzles in 3 difficulty levels, featuring the London Tube map on its cover. The Posh and Pocket Posh® puzzles series have over 3 million copies in print since their inception in May 2008. Pocket Posh Sudoku 10 (London Tube Map Edition) features a chicly styled cover making it a smart, sophisticated accessory that goes with anything. Packaged in a handy 4 x 6 size, Pocket Posh Sudoku 10 (London Tube Map Edition) fits nicely into a purse or tote. Pocket Posh Sudoku 10 (London Tube Map Edition) contains 100 addictive Sudoku puzzles and is perfect for puzzlers looking for a quick and engaging puzzle to complete. The Pocket Posh puzzle series is a great way to exercise your mind--and look great while doing it!