Product Description: The perfect storm of math and logic created when KenKen and Sudoku are combined, this book of puzzles at all levels will keep pencils moving and brains bending for hours. Combining the logic of Sudoku with the math play of KenKen, Kendoku’s rules are simple enough...read more

Product Description: Hot on the heels of the first two volumes, Kendoku: Extreme shows that when it comes to mind-bendingly difficult logic/arithmetic puzzles, too much is never enough! Combining the logic of Sudoku with the math play of KenKen, Kendoku’s rules are simple enough: The puzzles, either 6x6 or 9x9, look like Killer Sudoku games but in addition to numbers, players also must contend with math operators (+ - × ÷) within “fences” on the puzzle...read more