Mindbenders from Einstein

Back when I was a kid we used to do these mindbender logic problems all the time in one of the classes that I was in. I enjoyed them so much that I spent quite a bit of time over my summers doing them to pass time. This one is extraordinarily difficult. Einstein reportedly said that 98% of people cannot complete it. Can anyone else get it?

Who has the fish?

Note: Coudal has a link to the answer if you want to cheat!

One thought on “Mindbenders from Einstein

  1. lisa says:

    that was fun! i got it, but i had to construct a chart to keep track of everything–then it wasn’t hard at all. writing it though–now that would be hard!

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