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KenKen is the world's fastest growing puzzle since sudoku. It was developed in a Japanese Classroom in 2004 by renowned educator, Tetsuya Miyamoto, and was later introduced internationally as both an adult and educational math and logic puzzle in 2008. Originally intended to improve reasoning, creativity, concentration, and perseverance, this simple yet sophisticated puzzle has since expanded beyond the classroom into a global sensation. KenKen can be found daily in The New York Times and is now available in over 200 publications worldwide. Unlimited KenKen puzzles can be accessed on www.kenkenpuzzle.com and can also be played on mobile devices via the KenKen Classic app. It is supported by the National Council of Teachers of Mathematics (NCTM), the world's largest math education organization, and is used by over 30,000 educators worldwide.
Your goal is to fill in the whole grid with numbers, making sure no numbers is repeated in any row or column.
In a 3x3 puzzle, use the numbers 1–3. In a 4x4 puzzle, use the numbers 1–4, and so on.
The top left corner of each cage has a "target number" and math operation. The numbers you enter into a cage must combine (in any order) to produce the target number using the math operation noted (+, -, x, or ÷)
e.g. In this cage, the math operation to use is addition, and the numbers must add up to 5. Since the cage has 2 squares, the only possibilities are 2 and 3, in either order (2+3 or 3+2).
A cage with one square is a “Freebie”. Just fill in the number you're given!
A number cannot be repeated within the same row or column.
And you’re ready!
Still confused? Check out the Step-by-Step Tutorial for Beginners!