121 books • 18 series
Book #1: Binary Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 1)
Book #2: Binary Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 2)
Book #3: Binary Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 3)
Book #4: Binary Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 4)
Book #5: Binary Puzzle Books - 400 Easy to Master Puzzles 11x11 (Volume 5)
Book #1: Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Calcudoku Plus Minus Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Calcudoku Plus Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Calcudoku Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Calcudoku Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Calcudoku Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Calcudoku Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Calcudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Classic Sudoku Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1)
Book #2: Classic Sudoku Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 2)
Book #3: Classic Sudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 3)
Book #4: Classic Sudoku Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 4)
Book #5: Classic Sudoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5)
Book #1: Consecutive Sudoku Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1)
Book #2: Consecutive Sudoku Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 2)
Book #3: Consecutive Sudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 3)
Book #1: Diagonal Sudoku Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1)
Book #2: Diagonal Sudoku Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 2)
Book #3: Diagonal Sudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 3)
Book #4: Diagonal Sudoku Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 4)
Book #5: Diagonal Sudoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5)
Book #1: Futoshiki Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Futoshiki Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Futoshiki Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Futoshiki Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Futoshiki Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Hidoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 1)
Book #2: Hidoku Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 2)
Book #3: Hidoku Puzzle Books - 400 Easy to Master Puzzles 11x11 (Volume 3)
Book #4: Hidoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 4)
Book #1: Killer Sudoku Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1)
Book #2: Killer Sudoku Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 2)
Book #3: Killer Sudoku Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 3)
Book #4: Killer Sudoku Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 4)
Book #5: Killer Sudoku Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5)
Book #1: Numbricks Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 1)
Book #2: Numbricks Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 2)
Book #3: Numbricks Puzzle Books - 400 Easy to Master Puzzles 11x11 (Volume 3)
Book #4: Numbricks Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 4)
Book #5: Numbricks Puzzle Books - 400 Easy to Master Puzzles 13x13 (Volume 5)
Book #1: Patchwork Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 1)
Book #2: Patchwork Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 2)
Book #3: Patchwork Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 3)
Book #1: Skyscrapers Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1)
Book #2: Skyscrapers Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 2)
Book #3: Skyscrapers Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 3)
Book #4: Skyscrapers Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 4)
Book #1: Slitherlink Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Slitherlink Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Slitherlink Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Slitherlink Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Slitherlink Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Straights Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Straights Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Straights Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Straights Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Straights Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)
Book #1: Sudoku Jigsaw Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 1)
Book #2: Sudoku Jigsaw Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 2)
Book #3: Sudoku Jigsaw Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 3)
Book #4: Sudoku Jigsaw Puzzle Books - 400 Easy to Master Puzzles 10x10 (Volume 4)
Book #5: Sudoku Jigsaw Puzzle Books - 400 Easy to Master Puzzles 12x12 (Volume 5)
Book #1: Suguru Puzzle Books - 400 Easy to Master Puzzles 5x5 (Volume 1)
Book #2: Suguru Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
Book #3: Suguru Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)
Book #4: Suguru Puzzle Books - 400 Easy to Master Puzzles 8x8 (Volume 4)
Book #5: Suguru Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 5)