Really enjoyed this puzzle at the New York Times:
You didn’t win, but you do get a consolation prize: 850 words about human psychology and behavioral economics explaining the error of your ways.
I’ll still pride myself on recognizing the “problem” of understanding the rules fully and how the difficulty to guess the answer really lies in failing to understand who irrational people will be when playing. Totally nailed the Nash equilibrium part – wasn’t really sure where to go after that. So I was way off in my guess.
Play the puzzle, read the article. Play more games.