314
The best free, adless Chess server
(lichess.org)
All about open source! Feel free to ask questions, and share news, and interesting stuff!
Community icon from opensource.org, but we are not affiliated with them.
An LED in the corner of each square would light up an existing piece and the place to move it to. The Pi would ping the API, which would compare the current location to the board on the webpage to determine the change.