70 books • 7 series
Calcudoku - 200 Hard Puzzles 9x9 (Volume 5) (Hard, #5)
Calcudoku - 200 Master Puzzles 9x9 (Volume 1) (Master, #1)
Calcudoku - 200 Master Puzzles 9x9 (Volume 5) (Master, #5)
Calcudoku - 200 Master Puzzles 9x9 (Volume 2) (Master, #2)
Calcudoku - 200 Master Puzzles 9x9 (Volume 4) (Master, #4)
Calcudoku - 200 Master Puzzles 9x9 (Volume 3) (Master, #3)
Calcudoku - 200 Hard Puzzles 9x9 (Volume 4) (Hard, #4)
Calcudoku - 200 Normal Puzzles 9x9 (Volume 2) (Normal, #2)
Calcudoku - 200 Normal Puzzles 9x9 (Volume 1) (Normal, #1)
Calcudoku - 200 Normal Puzzles 9x9 (Volume 3) (Normal, #3)
Calcudoku - 200 Normal Puzzles 9x9 (Volume 5) (Normal, #5)
Calcudoku - 200 Normal Puzzles 9x9 (Volume 4) (Normal, #4)
Calcudoku - 200 Easy Puzzles 9x9 (Volume 4) (Easy..., #4)
Calcudoku - 200 Easy Puzzles 9x9 (Volume 1) (Easy..., #1)
Calcudoku - 200 Easy Puzzles 9x9 (Volume 3) (Easy..., #3)
Calcudoku - 200 Easy Puzzles 9x9 (Volume 5) (Easy..., #5)
Calcudoku - 200 Easy Puzzles 9x9 (Volume 2) (Easy..., #2)
Calcudoku - 200 Easy to Master Puzzles 9x9 (Volume 5) (Easy to Master, #5)
Calcudoku - 200 Easy to Master Puzzles 9x9 (Volume 2) (Easy to Master, #2)
Calcudoku - 200 Easy to Master Puzzles 9x9 (Volume 1) (Easy to Master, #1)
Calcudoku - 200 Easy to Master Puzzles 9x9 (Volume 4) (Easy to Master, #4)
Calcudoku - 200 Easy to Master Puzzles 9x9 (Volume 3) (Easy to Master, #3)