Will the territory controlled by Ukraine/Russia change significantly at any time before April 1, 2024? (This includes the rest of December 2023.) This would include major territorial gains or capture of important cities/objects.

Possible examples: Russian capture of Zaporizhzhia/Kherson, Ukrainian Capture of Melitopol. Not sufficient: capture of cities like Bakhmut (little strategic importance or territorial gains).

The resolution will be subjective to a degree, feel free to ask about any particular cases. There are quite a few discussions on individual cases in the comments of linked markets, especially the earlier ones: