Wolfgang, thanks for a nice diversion, I generally like geometric puzzles better than word or number puzzles. I think my brain power is pretty much exhausted for the rest of this year though.I was going to post some music riddles such as the Appalachian Riddle Song (I Gave My Love a Cherry) and also the three riddles from the opera Turandot (where the suitors lose their heads if they're wrong, and there is a beautiful aria, Nessun Dorma, played at soccer matches I hear), but the riddles really aren't that good. If you're interested, you can look 'em up. Meanwhile, I'm resting my brain.
Jon, I still like the "strawberries in the salt sea" words from I Once Loved a Lass.