Invented by a Japanese teacher, Tetsuya Miyamoto, the KenKen puzzle adds another layer of challenge by introducing math to the traditional Sudoku.

KenKen Rules

1. Fill in each box in the easier puzzle with a number from 1 to 4; in the harder puzzle, 1 to 6.

2. Do not repeat a number in any row or column.

3. The numbers in each heavily outlined set of squares, called cages, must combine (in any order) to produce the target number in the top corner using the mathematical operation indicated.

KenKen Puzzles & Solutions

April Puzzles and Solutions
* April issue puzzles and solutions (Easier)
* April issue puzzles and solutions
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

March Puzzles and Solutions
* March issue puzzles and solutions (Easier)
* March issue puzzles and solutions
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

February Puzzles and Solutions
* February issue puzzles and solutions (Easier)
* February issue puzzles and solutions
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

January Puzzles and Solutions
* January issue puzzles and solutions (Easier)
* January issue puzzles and solutions
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

December Puzzles and Solutions
* December issue puzzles and solutions (Easier)
* December issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

November Puzzles and Solutions
* November issue puzzles and solutions (Easier)
* November issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

October Puzzles and Solutions
* October issue puzzles and solutions (Easier)
* October issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

September Puzzles and Solutions
* September issue puzzles and solutions (Easier)
* September issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

August Puzzles and Solutions
* August issue puzzles and solutions (Easier)
* August issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

July Puzzles and Solutions
* July issue puzzles and solutions (Easier)
* July issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

June Puzzles and Solutions
* June issue puzzles and solutions (Easier)
* June issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

May Puzzles and Solutions
* May issue puzzles and solutions (Easier)
* May issue puzzles and solutions (Harder)
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

April Puzzles and Solutions
* April issue puzzles and solutions
* Bonus KenKen sample with solutions (Easier)
* Bonus KenKen sample with solutions (Harder)

Enjoy these puzzles presented by Will Shortz.

© 2009 Gakken Co. Ltd. and ™ Nextoy, LLC, used under license.<!--Ribbon Ad Start-->

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