More and more sudoku fans have found that they're ready to graduate to puzzles that present more of a challenge. This is the book for them!Includes:- 200 hard puzzles- Perfect portable size
- ISBN10 031237920X
- ISBN13 9780312379209
- Publish Date 2 October 2007
- Publish Status Active
- Out of Print 26 October 2024
- Publish Country US
- Imprint Saint Martin's Griffin,U.S.
- Format Paperback (US Tall Rack)
- Pages 320
- Language English