Sudoku Puzzles book for adults

Sudoku puzzles book for adults: 300 Sudoku puzzles book included full solution - Extreme level Diabolical Puzzles. Great for Extreme Sudoku Lovers : Font size-19 PT (Perfect for your Eyes)
Includes FREE BONUS PUZZLES downloadableIncludes instructions and techniques for complete beginners300 Diabolical puzzles (Extreme Level) Size of the book: 8.5" x 11" inch (21.59 cm x 27.94 cm) Every puzzle in this sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 possible solutionEasy to tear out, thanks to wide marginsIncluded full solution (end of the book)