KenKen®
KenKen® : No Operations Labeled

KenKen problems are free but require registration. If you do not
have a Math Forum login, please sign up now.

3x3 hard
4x4 hard
5x5 hard
6x6 hard
7x7 hard
8x8 hard
9x9 hard

Choose a grid size and difficulty level. There are ten puzzles of each kind.

© 2012 Drexel University. All Rights Reserved. http://mathforum.org/pows/