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Logical way to keep the planet greener!

I promised that I wouldn't blog about logic puzzles any more, but this was just too important to ignore, I think.

The geniuses at Nikoli introduce Enezzle, a "new electricity generating method that converts the feeling of pleasure and excitement when solving puzzles into electric energy". They've even published four very special (and very difficult) 31x45 puzzles just for the occasion. Not only are they a joy to solve, but you'll do the planet a favor, as well. (Coincidentally, today is also the second anniversary of when Nikoli celebrated having 10 billion members. They posted some challenging 31x45 puzzles for that occasion, too.)

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