Sudoku Mind Game: A Game for Mathematicians (Level-1)

Your brain is one of those things that can be "use it or lose it." While it isn't a muscle, you can actually train your brain to improve your memory, help you retain information, stave off things like Alzheimer's and more.
And some people believe that an easy thing to do to achieve these things is to play a game called Sudoku. Sudoku makes you think - and think critically, and it can also help improve your concentration. It is a great game to help improve memory. Due to the fact that Sudoku improves memory function, you should be able to shave a few seconds off your time each time you complete a puzzle. This can improve the speed at which you think about things in everyday life. Games like Sudoku can be very relaxing. Even if you are spending 10 minutes a day completing a puzzle that is 10 minutes you are not thinking about the mundane droll of your daily life.
This book has 60 Sudoku puzzles and at the end there are solutions to all the puzzles.