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Why are there ads?
We would love to provide everyone with an ad-free experience, but we have significant overhead and need ad revenue to cover at least a portion of our expenses. In addition, the ads allow us to provide the KenKen Classroom Program — totally free of charge — to over 30,000 teachers and 1 million students nationwide in an effort to support STEM education. Without ad revenue, we would would no longer have the resources to provide this "pro bono” program.
If you prefer an Ad-Free playing experience and still want to support these programs, we offer an annual subscription for just pennies a day. This option also offers Expert puzzles, No-Op puzzles, an improved Leaderboard, and more.
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CONTACT US
General questions & Concerns: customercare@kenken.com
KENKEN Classroom Program:
classroom@kenken.com
Licensing:
rights@kenken.com
International inquiries:
international@kenken.com
Welcome to KENKEN!
No matter what you're looking for — learning or fun — KenKen.com has it! Free online puzzles. Cool math games. Number games. (More addictive than Sudoku or Kakuro? You decide!) Educational games for kids. Visit our For Teachers section for math teacher resources, our free KenKen Classroom program, and a message from Tetsuya Miyamoto, the Japanese educator behind KenKen. Miyamoto, chess master David Levy, and the rest of Team KenKen have crafted these math puzzles into great games for learning and brain training. Need even more KenKen? Check out our Will Shortz Presents books. Try our mobile app on iPhone and iPad or our Kindle version. Play on the New York Times puzzle page and NCTM website. Regardless of why, how, or where you play, KenKen are the math puzzles that make you smarter!
Sincerely,
Team KenKen