The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.

Zag · Tired of his old title

I follow these guys on Facebook, and they are usually pretty interesting. I've even been the first to answer some of their weekly puzzles a couple of times. Their latest post, though, went so far over my head that I didn't even hear the 'zooom'.

http://centerofmath.tumblr.com/post/34559899939/ryan-kinser-speaking-at-the-center-of-math-on

Jack_Ian · Big Endian

When I lived in Germany, I found that I could use the little German I knew along with my English to watch Dutch TV and get enough understanding to find movies strangely fascinating (though not completely comprehensible).

This reminded me a lot of those times.