I don't know about free programs, but Chessmaster 11 allows playing over a LAN.
good free LAN chess interface
I tried Chessmaster over LAN but I can't get it to work. Like one computer can see the other computer in the list of players, but for some reason I can't make a game between 2 computers. I tried using the challenge mode or create a game mode, but it's not working for some reason.
I have the 10th edition by the way, but I assume the mechanics are just the same.
I'm
Any good, free interfaces out there that allows for LAN playing and possibly an analysis board with a friend over LAN?