Yeah, I was surprised that I needed to hit back through an entire game history to get back to the HN discussion... It would be more reasonable to map the 'undo

Yeah, I was surprised that I needed to hit back through an entire game history to get back to the HN discussion... It would be more reasonable to map the 'undo' button to backspace and a visible button, and keep the browser back button semantics unsurprising. One can also have a string in the window with the current game state for sharing/linking.