Xr Puzzlelogic Press

200+ Sudoku Puzzle Book Medium To Hard - Vol 3: 108 Medium And 108 Hard Puzzles For Teens Adults & Seniors - Two Puzzles Per Page!

360 Sudoku Puzzle Book Medium To Hard - Vol 1: 180 Medium And 180 Hard Puzzles For Teens Adults & Seniors

360 Sudoku Puzzle Book Medium To Hard - Vol 2: 180 Medium And 180 Hard Puzzles For Teens Adults & Seniors

360 Sudoku Puzzle Book Medium To Hard - Vol 3: 180 Medium And 180 Hard Puzzles For Teens Adults & Seniors

1000+ Sudoku Puzzle Book Medium To Hard - Vol 3: 258 Medium And 258 Hard Puzzles For Teens Adults & Seniors