8 books • 6 series
To Build a Better Slave
Quick Sudoku: Flash (Flash)
Mindbending Sudoku: Flash (Flash)
Master Sudoku (Teach Yourself: Games/Hobbies/Sports)
Teach Yourself
Master Sudoku: Teach Yourself (Teach Yourself) (TY Sports and Games)
Sudoku (Teach Yourself (McGraw-Hill))
Sudoku (Tysg)