Need help making Pente/Go game mechanics

I’m trying to make a version of Pente/Go in unreal 4 and I’ve run into a major block with trying to make the mechanics of being able to drag and drop/place pieces on the board while also making the piece align to the that would be on the board. I’ve also been haven’t been able to figure out how to make the turn system for the game as well. I’ve been working in blueprint for the past few months for a class but I’m still fairly new. I started off with the Puzzle example project since it was the most similar to a board game and have the basics of the level/board built. I’m also trying to build this with a focus on mobile platforms.

This is the blueprint I built trying to make the turn system and piece placement in the player controller.


Any help would be much appreciated. Thank you!