106 books • 11 series
An Easy Alpha Sudoku Vol. 1 (An Easy Alpha Sudoku, #1)
100 Crossword Puzzles Vol. 3 (100 Crossword Puzzles, #3)
Easy Does It Sudoku Vol. 1
Gentle Side of Sudoku Vol. 1
A Good Hardy Sudoku Vol. 1 (A Good Hardy Sudoku, #1)
A Difficult Sudoku Vol. 1
100 Crossword Puzzles Vol. 17
Sudoku In The Medium Vol. 1 (Sudoku in the Medium, #1)
Alpha Sudoku in the Medium Vol. 1
Alpha Sudoku To The Extreme Vol. 3
A Good Hardy Alpha Sudoku Vol. 3 (A Good Hardy Alpha Sudoku, #3)
A Good Hardy Alpha Sudoku Vol.1
A Good Hardy Alpha Sudoku Vol. 2 (A Good Hardy Alpha Sudoku, #2)
An Easy Alpha Sudoku Vol. 2
Alpha Sudoku to the Extreme Vol. 2 (Alpha Sudoku to the Extreme, #2)
Alpha Sudoku in the Medium Vol. 2 (Alpha Sudoku in the Medium, #2)
100 Crossword Puzzles Vol. 16
As Simple as ABC Alpha Sudoku Vol. 2
Sudoku In The Medium Vol. 2 (Sudoku in the Medium, #2)
A Good Hardy Sudoku Vol. 2 (A Good Hardy Sudoku, #2)
A Difficult Sudoku Vol. 2
Easy Does It Sudoku Vol. 2 (Easy Does It Sudoku, #2)
Alphadoku to the Extreme Vol. 1
100 Crossword Puzzles Vol. 14 (100 Crossword Puzzles, #14)