An addictively fun challenge of logic and reasoning skills, these 200 all-new Sudoku puzzles range from very hard to extremely difficult. In a handy, pocket-sized pad, these puzzles are perfect for every on-the-go Sudoku sleuth!
An addictively fun challenge of logic and reasoning skills, these 200 all-new Sudoku puzzles range from very hard to extremely difficult. In a handy, pocket-sized pad, these puzzles are perfect for every on-the-go Sudoku sleuth!
This handy pocket-sized pad includes 200 all-new sudoku puzzles ranging in difficulty from very challenging to EXTREMELY difficult.
Zachary Pitkow is a programmer and professor of biophysics at Columbia University, U.S.A.
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