121 books • 18 series
Slitherlink Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4) (Slitherlink Puzzle Books, #4)
Numbricks Puzzle Books - 400 Easy to Master Puzzles 13x13 (Volume 5) (Numbricks Puzzle Books, #5)
Binary Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 6) (Binary Puzzle Books, #6)
Slitherlink Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3) (Slitherlink Puzzle Books, #3)
Futoshiki Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3) (Futoshiki Puzzle Books, #3)
Diagonal Sudoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5) (Diagonal Sudoku Puzzle Books, #5)
Sudoku Jigsaw Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5) (Sudoku Jigsaw Puzzle Books, #5)
Killer Sudoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5) (Killer Sudoku Puzzle Books, #5)
Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5) (Chain Sudoku Puzzle Books, #5)
Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3) (Calcudoku Plus Puzzle Books, #3)
Suguru Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5) (Suguru Puzzle Books, #5)
Skyscrapers Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 2) (Skyscrapers Puzzle Books, #2)
Classic Sudoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5) (Classic Sudoku Puzzle Books, #5)
Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2) (Calcudoku Plus Puzzle Books, #2)
Slitherlink Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2) (Slitherlink Puzzle Books, #2)
Futoshiki Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2) (Futoshiki Puzzle Books, #2)
Calcudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5) (Calcudoku Puzzle Books, #5)
Straights Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5) (Straights Puzzle Books, #5)
Binary Puzzle Books - 400 Easy to Master Puzzles 11x11 (Volume 5) (Binary Puzzle Books, #5)
Slitherlink Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1) (Slitherlink Puzzle Books, #1)
Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1) (Calcudoku Plus Puzzle Books, #1)
Skyscrapers Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1) (Skyscrapers Puzzle Books, #1)