Help with 2D Checkers game

OK so basically I want to create a checkers mini-game for my big retro project I am working on. I want it so that you click on one checker to select it, then click a tile to move the checker there. I am familiar with ray-casting but everything I try just doesn't seem to work.

My scene includes a background, the board, all the checkers (red and blue) and points which I will use as transform.positions for the checkers to move to on the board.

I script in c# and any help would be appreciated. Thank you :)