There is speculation that armed forces of Ukraine aim to isolate the Russian forces beyond the Seim river and take the area, somewhat similar to the Kherson operation last year. 

This resolves YES, if Ukraine gains control of the whole area bounded by Ukraine border, Tyotkino, the Seim river and Glushkovo by close date. Minor enclaves (less than 500m from the river, e.g. Russian contesting some of the river bends) that are not fully controlled still mean this resolves YES. Currently Ukraine doesn't control any part of the area. A sketch of the area is below:

I will use the maps and reporting by Institute of the Study of War (

https://www.understandingwar.org/backgrounder/ukraine-conflict-updates

This resolves YES immediately if at any time the whole area in question is considered under control of Ukraine - even if they lose the territory later.