@5, @7
Indeed, the engines are still somewhat clueless about that kind of closed or drawn positions.
See below how stockfish 8 is so greedy about material and just gives away the game incredibly easily after that drawn position. I know this is not a full powered engine on lichess but it's still kind of funny.
http://en.lichess.org/gGvuQbCmstXgAnd there are even some open positions that engines fail, especially the complicated end game kind of situations but they are improving on that aspect better than the closed positions.
For instance there are a few positions in the following video that most engines fail most of the time if they don't get enough time to calculate. But my stockfish got the right answers after a few failing tries and proved itself eventually :)
www.youtube.com/watch?v=N20YQZ7xmjEIt's an amazing study btw.