This is the Sudoku that launched the craze. From Nikoli, the
Japanese company that invented the game, this bestselling calendar
features puzzles that are exceptional for their elegance and
perfect balance of toughness and solvability. Not generated by
computer but thoughtfully crafted by hand, each day's challenge is
like a one-on-one match with its expert creator. THE ORIGINAL
SUDOKU calendar features two easier puzzles each weekend. with
increasing difficulty over the course of the week. In case you find
yourself hopelessly stumped, solutions are printed on the reverse
side of each page. Introducing new eco-friendly cardboard backer
and larger page size! Printed on FSC-certified paper.
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