Search -
Sit & SolveŽ Double Black Diamond Hard Sudoku (Sit & SolveŽ Series)
Sit Solve Double Black Diamond Hard Sudoku - Sit & SolveŽ Series Author:Frank Longo 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 & SolveŽ collection is the ticket. Attractively packaged, it's a terrific gift or stocking stuffer for hardcore sudoku fans.