NOT TOO EASY, NOT TOO HARD... THESE KENKEN PUZZLES ARE JUST RIGHT Perfect for part-time players and experienced puzzlers alike who want to challenge themselves without pulling their hair out, this book of 4x4, 5x5 and 6x6 KenKen puzzles will entertain you for hours. Grab a pencil, pour yourself a cup of coffee or tea, and enjoy 200 of the most enjoyable and stress-free KenKen puzzles ever. These totally fun, totally addicting puzzles have been hand-selected by our most experienced team of "Kenerators" to intrigue you and challenge you without the requirement of having won a Nobel Prize in Mathematics to solve. Take it anywhere...you can never get enough of KenKen, "The Puzzle That Makes You Smarter."