This is how brain jogging is fun: In this Sudoku Jumbo puzzle book, 750 tricky Japanese number puzzles are waiting for you - of course with solutions ! With our six levels of difficulty ( "very easy", "easy", "medium", "difficult", "very difficult" and "extreme" ) you can train your memory as well as your logical and combinatorial thinking in a playful way, whether you are young or old, school children, student or retiree. In this book: 750 Sudoku with solutions level of difficulty "difficult" large format language: English Under "Morari Media" you will find many more Sudoku blocks for children, adults, seniors, beginners and professionals: Sudoku 9 x 9 Sudoku 4 x 4 Sudoku 6 x 6 Sudoku 12 x 12 Sudoku 16 x 16 Sudoku Hyper Sudoku Marathon Sudoku Samurai Sudoku Triathlon A Sudoku Triathlon B Sudoku Twins Sudoku X various Sudoku We avoid repetitions by newly generating every Sudoku and offer you hours of puzzle fun!