For the more mathematically minded readers, here's a harder version of the problem: http://jdh.hamkins.org/transfinite-epistemic-logic-puzzle-challenge/ http:/

For the more mathematically minded readers, here's a harder version of the problem: http://jdh.hamkins.org/transfinite-epistemic-logic-puzzle-challenge/ http://jdh.hamkins.org/transfinite-epistemic-logic-puzzle-ch...