My opponent moved some of his units South of Smolensk to the east in an effort to straighten out the lines and I heroically moved my units to the east as well to be next to his:
Here's the minimap view of the moves showing the breakthrough in the northernmost and southernmost part of the front lines ( moves for turns 16 and 17 ):
The situation didn't change all that much in turn 19 so there's no entry(s) for turn 19. Here's some of the Axis losses so far ( before any combat in turn 20 ):
My opponent found a smallish bug in that even after the city supply points were released they wouldn't move. I decided I was overloaded in PBEM games and so we abandonded our game. I think Ken Miller would have won eventually. He's a good player.