14 books • 1 series
Book #1: SylverZone Easy Sudoku - 100 Puzzles - Book One
Book #2: SylverZone Medium Level Sudoku - 100 Puzzles - Book Two
Book #2: SylverZone WordSearch - 100 Puzzles - Volume Two
Book #3: SylverZone Harder Sudoku - 100 Puzzles - Book Three
Book #3: SylverZone WordSearch - 100 Puzzles - Volume Three - Abstract Series