Only the bravest sudoku solvers should take on this collection of all-new deviously difficult puzzles. This is the perfect collection to put your solving skills to the test!
Features:
- 200 hard puzzles
- Big grids for easy solving
- ISBN10 1250025273
- ISBN13 9781250025272
- Publish Date 16 April 2013 (first published 19 July 2011)
- Publish Status Active
- Out of Print 20 December 2014
- Publish Country US
- Imprint Saint Martin's Griffin,U.S.
- Format Paperback (B-Format (198x129 mm))
- Pages 320
- Language English