Thanks you Cyrus for the request of an auto play button on the game page. Now we have one! He also correctly suggested that the ‘begin’ and ‘end’ buttons were confusing so they are now ‘top’ and ‘bottom’.
Hit the space bar or ‘play’ to move through a game automatically. The space bar also works on puzzles to walk through the currently selected line. For instance after you get one wrong it will show you the refutation if available. Or walk through the whole puzzle from the top. As before the arrow keys and forward buttons continue to work the same way.
Go to account -> settings to change the delay between moves.
Thanks again Cryus!