Hard-as-Nails Sudoku 5 contains over 200 puzzles that are guaranteed to rack the brains of even the most practised Sudoku addict - perfect for anyone who finds that most Sudoku puzzles just don't test them any more. The pocket-sized format means that you can test and build you logic and reasoning skills, improve your memory and keep your brain healthy on your daily commute, at the airport, on holiday or in the comfort of your own home.
- ISBN10 1843174189
- ISBN13 9781843174189
- Publish Date 9 July 2009
- Publish Status Out of Print
- Out of Print 26 January 2017
- Publish Country GB
- Imprint Michael O'Mara Books Ltd
- Format Paperback
- Pages 224
- Language English