Dr. Duke used to begin each of his gaming/simulation courses with this exercise. While some students would solve the problem right away, others would struggle all semester. It had taken Dr. Duke well over a year himself, and he would always explain that the smarter you were, the longer it took to figure it out.
I had a sudden insight and figured this out in about four or five “hits.” Mainly because I read the “some students would solve the problem right away” part and started looking for something so simple somebody could solve it right away. And I found it.
I hope it’s not true about the “smarter you are, the longer it takes.”
I think I just spent too much time staring at six-sided dice as a child.