South was a bit more exciting
After a failed attack on the Dnepr bridgehead ( also at less than 1:1 odds initially), he stayed to fight. Getting the pocket meant going through a thick carpet of Russian units. If the combat filter was on, you would not be able to see a thing. I'm confident that the pocket will be secure. The key factor is the light blue pz div, now in regts, at the top of the pocket. It is the 1 that I decided not to join the other 2 in the bridgehead. I think it had 49 or 50 MPs and was able ho go round the top (thanks to the absence of any bad guys in the way until after it had crossed the Dnepyr) and to do a bit of herding back in the direction of Kiev.
I had started the move hoping that I could swing both north and south, but the mass of Russian units was too great so I had to settle for half. Much better than 2 unsuccessful efforts even though the final bag in the pocket was 'only' 3 tk and 6 inf xx and 1 para x.
Th light blue pz divs 2 hexes SW of the original breakthrough are not ones I forgot to move. They were in the original bridgehead with some 30 MPs each. I had dropped fuel to their corps HQ last turn, then place the HQ adjacent to them on the west bang. I used them to clear the enemy from the adjacent 3 hexes (1 deliberate + 2 hastys with help from an extra pz xx) before recrossing the river where they are well within 20 MPs of the railhead and will be well fueled again next turn. This tactic meant that only 1 unit had to cross the Dnepr into an enemy ZOC which costs many more extra MPs. That in turn meant that I was able to seal the pocket properly.