Puzzle-master Will Shortz of NPR radio will introduce us on the rules of KenKen puzzles and how to solve them.
The above video was showing a KenKen that only uses the add operation of the digits. However, general KenKen puzzles have add, minus, multiply, and divisor operators indicated next the results number within their cages. The below video shows how to work out these more difficult forms of the puzzles.