119 books • 13 series
Book #1: 250 Hard Binary Puzzle 8x8
Book #1: 400 Variety Sudoku
Book #1: Sudoku for Children
Book #1: Hard 250 Mega Sudoku 16 X 16
Book #1: 250 Hard Suduko X Puzzle Book 16 X 16
Book #2: 250 Kakuro Puzzles 10x16
Book #3: 250 Kakuro Puzzles 11x17
Book #1: 250 Medium Killer Sudoku Puzzles
Book #2: 250 Hard Killer Sudoku Puzzles
Book #1: 250 Hard to Very Hard Killer Suduko Puzzle
Book #1: Medium to Super Hard Sudoku Samurai Puzzles
Book #2: 400 Variety Sudoku
Book #2: Numbricks for Children
Book #3: Straights for Children
Book #4: Hidoku for Children
Book #5: Calcudoku for Children
Book #2: 250 Medium to Hard Sudoku Samurai Puzzles
Book #1: The Ultimate Numbricks Challenge - 1000 Puzzles