Will Shortz Presents the Puzzle Doctor: KenKen Fever; 150 Easy to Hard Logic Puzzles That Make You Smarter

KenKen mania is sweeping the nation! The only cure is more puzzles. Enjoy this volume of 150 easy to hard KenKen puzzles that range in size from 6 x 6 to 9 x 9.

TETSUYA MIYAMOTO, the creator of KenKen, is a math teacher whose use of KenKen in his classroom has proved so successful that it has lead to a worldwide demand for his puzzle to be published in book form.

 WILL SHORTZ has been crossword editor of The New York Times since 1993. He is also the puzzlemaster on NPR’s Weekend Edition Sunday.