20 books
250 Hard Sudoku 9x9 Puzzles
250 Medium Sudoku X 9x9 Puzzles
250 Hard Windoku 9x9 Puzzles
250 Hard Jigsaw Sudoku Puzzles
250 Medium Windoku 9x9 Puzzles
250 Medium Sudoku Puzzles
250 Hard Sudoku X 9x9 Puzzles
250 Medium Killer Sudoku 9x9 Puzzles
250 Doors Puzzles
250 Medium to Hard Straights Puzzles
250 Medium Jigsaw Sudoku 9x9 Puzzles
250 Hard Killer Sudoku Puzzles
250 Clouds 9x9 Puzzles
250 Medium Straights Puzzles
250 Hashiwokakero 9x9 Puzzles
250 Maze Puzzles
250 Hard Straights Puzzles
250 Hard Numbricks Puzzles
250 Medium to Hard Numbricks Puzzles
250 Medium Numbricks Puzzles