(Paperback)

The ultimate collection of over 1,000 handcrafted sudoku puzzles, in a range of difficulties, handcrafted by the masters at Nikoli in Japan (whose Workman sudoku books have 1.3 million copies in print combined).

(Paperback)

The Sudoku craze continues! And now, players are ready for a real challenge. Ready to take it up a notch This title features over 300 challenging puzzles created by hand by Nikoli, the Japanese company that originated Sudoku. It is a step up from beginner puzzles, but not quite as tough as those in "X-Treme Sudoku".

(Paperback)

Our hardest-yet Sudoku collection, handcrafted by the puzzle masters at Nikoli in Japan (whose Workman Sudoku books have 1.3 million copies in print combined).