Chess Game with WPF in Visual Studio + MVVM

Hey! I'm making chess as mentioned in the title and i was wondering if someone wanted to help me with one small implementation of it. I thought you guys might know better than Chat GPT and it might be more fun. On the picture you have a rough estimate on how far i've gotten. What i want to do now is implement some light interaction with wpf. For example when i click the farmer i want it to highlight that tile the farmer is on and (later on) the available moves that it can do.
Is this perhaps something someone has some clue about?