Important: this book contains all of: mazes, numerical sudoku and alphabetical sudoku with difficulty levels from easy to medium - the best choice for everyone who is not sure which level to choose or are afraid of too hard riddles.

If you're interested in other difficulty levels - consider buying mazes from our other series (cover colors) - click on the author's name to see the rest of activity books.

This challenging maze & sudoku (including alphabetical sudoku) puzzles activity book for adults provides you with long hours of brain workout which will make you smarter!

There are 20 mazes, 20 numerical sudoku and 20 alphabetical sudoku (60 in total), which are organized into 5 difficulty categories - from the simplest ("10") to medium ("30"). Take a look at the back cover to see the examples ("Look inside" option).

If you are not sure what kind of difficulty you should choose for yourself - our gray cover series contains books with levels from 10 to 50 to give you the chance to try them all and decide :)

There is one puzzle (maze, numerical sudoku, alphabetical sudoku) per page which gives you clear view on the whole riddle and let you focus your mind on it.

At the end of this activity book you can find the solutions to all of the mazes, numerical sudoku and alphabetical sudoku - this might be helpful if you get stuck.

You will literally feel how your brain cells grow while trying to solve these puzzles, especially the harder ones. And when you finish this set of riddles - you can always choose the next one (with more specific range of difficulty levels).

Happy solving!

We also recommend our other activity books - only mazes, numerical sudoku or alphabetical sudoku puzzles - click on the author's name to see them.