Will Shortz Presents Crazy for Kenken Killer: 100 Logic Puzzles That Make You SmarterPaperback, 31 March 2009

Ready for a Real Challenge?

Put your solving skills to the test with this wild and wicked collection of KenKen puzzles.

Features:

• 100 challenging KenKen puzzles using addition, subtraction, multiplication and division
• Introduction and how to solve instructions from legendary New York Times crossword editor Will Shortz
• Big grids with lots of space for easy solving