A fun book of Sudoku puzzles for adults. Great for beginners or to give as a gift. Sudoku and other puzzles help keep the brain sharp. This is a nice 8.5 X 11-inch book with one puzzle per page. Dive in, have fun, and improve your mental clarity,3 Levels of Difficulty To Improve your Game with Solutions. Keep Your Brain Young, No guessing needed. Each puzzle increase in difficulty as you progress, which makes them satisfying and fun to solve. Advanced strategies are needed for the Tricky and Advanced puzzles. The Easy and Medium puzzles can be solved without advanced strategies, but using them will shorten the solving time. Big and easy-to-read solutions at the end of the book,8.5 X 11-inch book with one riddle for each page. Dive in, have fun, and improve your mental clarity.