Killer Samurai Sudoku for Experts, Book 2: 100 Mind-Bending Puzzles
Description :
The most difficult Killer Sudoku puzzles in the known universe? Killer Samurai Sudoku is five linked Killer Sudoku puzzles in one. Killer Samurai Sudoku for Experts, Book 2 contains 20 3-star puzzles, 40 4-star puzzles, and 40 5-star puzzles. Each puzzle will challenge the most expert Killer Sudoku aficionado. The most difficult Killer Sudoku puzzles yet!