Will Shortz Presents Keep Merry and Sudoku On: 300 Easy to Hard Puzzles Showing the single result Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale! Seasonal Sale Will Shortz Presents Keep Merry and Sudoku On: 300 Easy to Hard Puzzles $25.00 Original price was: $25.00.$12.50Current price is: $12.50. BooksAdd to cart