Books by Nikoli Publishing

Extra tricky. Extra tough. It's the sudoku collection that's not for the faint of heart. If you're craving the challenge, sharpen your pencil and pit your wits against the Japanese puzzle-makers at the top of their game. In each of these more than 300 handcrafted puzzles, ranked by difficulty from expert to x-treme to ultimate, every move is an adventure, a one-on-one challenge with a grandmaster who delights in elegance, symmetry, and building in the occasional roadblock. But keep going. You'll solve it eventually... you genius!Can't get enough? Look for:The Original SudokuThe Original Sudoku Book 2More Original Sudoku X-treme SudokuExpert Sudoku The Original Sudoku Page-a-Day Calendar 

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".