A level 6 KenKen® can be quite a challenge, making this puzzle perfect for the true KenKen® fan! Your student will need to use addition, subtraction, multiplication and division, paired with a bit of logic, to decode the grid. He'll be improving his mathematical reasoning skills, and, some might say, get smarter just by playing! Here's how:

Using the digits 1-4 in this 4x4 puzzle, fill the small squares with digits so as not to repeat a digit in any row or column, and so that the digits within each heavily outlined area will equal that area’s corner number when combined using the indicated operation. For more information visit www.kenken.com.  

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