Russia Ukraine war, page-60438

The Putinist defence lines to the north of Lyman collapsed. As you say there remains one possible Putinist escape route from Zarichne to Kreminna HOWEVER the UAF largely controls the forrest to the south of this route.

In plain language about 3000 Putinist fighters are now operationally surrounded. The reinforcements they received are also operationally surrounded unless they exit under fire.

This offensive has been costly to both sides because the UAF has mostly faced professional soldiers that Putin can't replace. And for what? One man's ego. That's all.