The Original Sudoku 2018 Calendar

Challenge your brain all year long with more than 300 ever-challenging Sudoku puzzles, each one handcrafted by the experts at Nikoli, the Japanese company that created the addictive numbers game. Because each full-color puzzle is designed by humans, not computer-generated, every page offers an inten [...]
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Challenge your brain all year long with more than 300 ever-challenging Sudoku puzzles, each one handcrafted by the experts at Nikoli, the Japanese company that created the addictive numbers game. Because each full-color puzzle is designed by humans, not computer-generated, every page offers an intensive challenge that'll keep you entertained all day, every day. Kick off the weekend with easier puzzles, then ramp up your skills to solve the increasingly difficult puzzles throughout the week. It's the perfect balance of difficulty, solvability, and addictive appeal for any Sudoku lover.