Hi,

I've noticed that when you try to move a piece on the analysis board after going back a few moves, the board will simple revert to the current position. Sometimes it's good to be able to play out variations from old positions, even if it's just to see something you think you missed, so it might be an idea to make any position editable, with maybe a "Revert" button as well as a "Current" button, the "Revert" one to go back to the position that you started moving from.

 Just a thought :)

Yeah, that would be a good idea.