Will Shortz Presents Crazy for KenKen Killer: 100 Logic Puzzles That Make You Smarter

Put your solving skills to the test with this wild and wicked collection of KenKen puzzles. Features 100 challenging KenKen puzzles using addition, subtractions, 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.