3 of 3 people found the following review helpful
Verified Purchase(What's this?)
This review is from: Will Shortz Presents Ferocious KenKen: 200 Challenging Logic Puzzles That Make You Smarter (Paperback)
I love Ken-Ken puzzles, and these truly are ferocious! From 6x6 to 9x9 puzzles, all are very challenging! But I wanted a booke that excluded any EASY level puzzles, and this one fits the bill. Even the 6x6 puzzles are quite difficult!