Ultimate Killer Su Doku Book 1

Perfect for coffee breaks, commutes or relaxing at home, this collection of 200 brand new ultimate killer sudoku puzzles is guaranteed to provide you with a daily challenge:

• 200 new ultimate killer sudoku puzzles
• Only the hardest puzzles for the avid killer sudoku fan
• 9 x 9 grid patterns
• One puzzle per page
• Solutions at the back of the book
• Highly portable paperback