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Super Sudoku takes America's favorite logic puzzle to the next level!
In each Super Sudoku puzzle solvers need to complete the grid so that each row, column, 3 x 3 box, AND shaded 3 x 3 box contains the numbers 1 through 9. It's a clever spin on sudoku that adds an extra level of difficulty that's sure to thrill sudoku fans!
This collection, edited by the incomparable Will Shortz, contains 100 Super Sudoku puzzles ranging in difficulty from easy to extra hard.