The new puzzle from Japan.
Nice blog. It's a good Idea. I don't know if it's endorphins or what, but I get a "rush" when I do puzzles. The latest one I'm hooked on is KenKen. I don't think it's possible that things like KenKen and crosswords don't help your brain stay fit. I've made a video about how to start solving a 9x9 KenKen in which the operation signs are not given. You can check it out at:http://mathmojo.com/chronicles/kenken/
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