394 books • 40 series
Consecutive Sudoku - 400 Easy to Very Hard Puzzles 9x9 vol.9 (Consecutive Sudoku, #9)
Killer Sudoku - 200 Normal to Hard Puzzles 9x9 vol.6 (Killer Sudoku, #6)
Killer Sudoku - 200 Easy to Normal Puzzles 9x9 vol.5 (Killer Sudoku, #5)
Killer Sudoku - 200 Hard to Very Hard Puzzles 9x9 vol.7 (Killer Sudoku, #7)
Killer Sudoku - 200 Easy to Very Hard Puzzles 9x9 vol.8 (Killer Sudoku, #8)
Killer Sudoku - 200 Easy Puzzles 9x9 vol.1 (Killer Sudoku, #1)
Killer Sudoku - 200 Very Hard Puzzles 9x9 vol.4 (Killer Sudoku, #4)
Killer Sudoku - 200 Hard Puzzles 9x9 vol.3 (Killer Sudoku, #3)
Killer Sudoku - 200 Normal Puzzles 9x9 vol.2 (Killer Sudoku, #2)
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