Will Shortz Presents Survival of the Fittest Sudoku: 200 Hard Puzzles;
Will Shortz Presents Survival of the Fittest Sudoku: 200 Hard Puzzles

Watch out! These Sudoku puzzles are not for the faint of heart! But if you dare, grab a pen and take on these two hundred all-new extra-challenging puzzles.

Features:
200 hard puzzles
Big grids for easy solvi...

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Watch out! These Sudoku puzzles are not for the faint of heart! But if you dare, grab a pen and take on these two hundred all-new extra-challenging puzzles.

Features:
200 hard puzzles
Big grids for easy solving
Introduction by legendary puzzlemaster Will Shortz



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