395 books • 47 series
Book #1: Cool Slitherlink 400 Sudoku Project.
Book #2: Star Puzzle 400+ Sudoku.
Book #1: 1,000 + Calcudoku sudoku 6x6
Book #3: 1,000 + Calcudoku sudoku 8x8
Book #4: 1,000 + Calcudoku sudoku 9x9
Book #10: 1,000 + Calcudoku sudoku 7x7
Book #1: Tridoku Sudoku. Excellent Book Game.
Book #4: Book Tridoku Sudoku. Hard Level.
Book #1: 400 + Variete Sudoku 9x9 Cool Mix