Sit & Solve® Double Black Diamond Hard Sudoku:

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Author:
Longo, Frank
Number of Pages:
96
ISBN-13:
9781454906995
ISBN-10:
1454906995
Binding:
Paperback
Publication Date:
05/07/2013
Publisher:
Puzzlewright
Sit & Solve® Double Black Diamond Hard Sudoku:  - ISBN: 9781454906995
Warning: danger ahead! These treacherously tough puzzles all require upper-level solving techniques to conquer. So, if you want hard sudoku that's easy to take on the go, this Sit & Solve® collection is the ticket. Attractively packaged, it's a terrific gift or stocking stuffer for hardcore sudoku fans.