676 books • 63 series
Killer Sudoku - 200 Easy to Normal Puzzles 9x9 (Volume 1) (Killer Sudoku - Easy to Normal Puzzles, #1)
Killer Sudoku - 200 Easy to Normal Puzzles 9x9 (Volume 2) (Killer Sudoku - Easy to Normal Puzzles, #2)
Killer Sudoku - 200 Easy to Normal Puzzles 9x9 (Volume 5) (Killer Sudoku - Easy to Normal Puzzles, #5)