Occasionally the board will not allow you to move and get stuck. Sometimes resetting the last piece moved helps, but I find myself sometimes having to shutdown and restart mid game. (I did calibrate my board each time before playing.) Also on online games via lichess the board doesn’t recognize resigning from the opponent. You have to resign yourself and hope your opponent actually resigned. Beyond these few minor issues, I really love the board, and can’t wait to teach my daughter how to play on it. I hope the lessons grow to include opening theory training. Right now all of the lessons are beginner level.