Will Shortz Presents the Big, Bad Book of KenKen 100 Very Hard Logic Puzzles That Make You Smarter

Puzzle fans have fallen for KenKen and now crave more challenging puzzles. The puzzles in this edition range in size from 6x6 grids to 9x9 grids and for the first time there will also be grids without application symbols. It's the ultimate KenKen challenge!This edition will also include "How to Solve" instructions and an introduction by puzzlemaster Will Shortz. Includes: *100 very challenging KenKen puzzles *Puzzles range in size from 6x6 grids to mind-bending 9x9 grids * Introduction and solving instructions by puzzlemaster Will Shortz

TETSUYA MIYAMOTO, the creator of KenKen, is a math teacher who runs a unique mathematics class for grade school children in Japan where he practices “The Art of Teaching Without Teaching.” His teaching method and use of KenKen in his classroom has proven extremely successful. His students regularly go on to be accepted at the most prestigious schools in Tokyo. WILL SHORTZ has been the crossword puzzle editor of The New York Times since 1993. He is also the puzzlemaster on NPR’s Weekend Edition Sunday and is founder and director of the annual American Crossword Puzzle Tournament. He has edited countless books of crossword puzzles, Sudoku, KenKen, and all manner of brain-busters.