Become a master in solving Killer Sudoku 9x9.
Killer Sudoku 9x9 - Easy to Hard is a collection of 270 puzzles: 72 Easy Killer Sudoku 9x9 Puzzles 72 medium Killer Sudoku 9x9 Puzzles 72 Hard Killer Sudoku 9x9 Puzzles 54 extra logic puzzles.
You start with Easy Killer Sudoku Puzzles and you gradually build your way up to extremely Hard Killer Sudoku puzzles.
After solving all the Puzzles in this book, you will be a Killer Sudoku Pro.
Become a master in solving Killer Sudoku 9x9