Big Book of Ultimate Killer Su Doku Book 1

Perfect for coffee breaks, commutes or relaxing at home, this bumper collection of 300 brand new ultimate killer sudoku puzzles is guaranteed to provide you with hours of entertainment:

• 300 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
• Great gift idea