Sudoku Extremo

Independently published

Sudoku extrem: Are you ready?                    

Independently published

Sudoku Extreme: 200 Extreme Sudoku Puzzles. These extremely difficult Sudoku puzzles will keep you solving for hours upon hours. Solutions included. (Extreme Sudoku Puzzle Books)

Independently published

Killer Sudoku for Adults: 500 Extreme Killer Sudoku (9x9) Puzzles : Keep Your Brain Young

Riddler

Sudoku Extremo (Vol. 9 de 10) (Edición Portuguesa)

Riddler

Sudoku Extremo (Vol. 2 de 10) (Edición Portuguesa)

Paws Pals Publishing

Sudoku: The Little Gold Sudoku Puzzle Book (Logic And Brain Teasers Sudoku Puzzle Book): 25 Extreme Sudoku Puzzles (The Little Sudoku Puzzle Book 1) (English Edition)

Infinite Sudoku [Extreme Edition]                

Independently published

Hard - Extreme SUDOKU PUZZLES 1                  

Independently Published

500 Sudoku dificil extremo adultos Vol.1: Libro Sudoku para adultos | 500 Sudoku experto - 9x9 con soluciones - | Juego Sudoku muy dificil | Libro de ... ( 21.59 x27.94 cm ) (BMA Sudoku Experto)

Independently published

Sudoku Puzzle book for adults 1000+ puzzles Hard to Extreme with full Solutions - Hard, Diabolical, Extreme: 3 levels - HARD, DIABOLICAL, EXTREME ... Seniors and Extreme Sudoku lovers