somebody has to play upside down, or you each have to play with the opponent's pieces upside down.Two Player Chess uses pieces that look the same from both sides of the board, eliminating this problem.
I just did. It does not. And you didn’t read my what I wrote. In Lichess you play with your opponent pieces upside down.
not true. in the "offline" section, look for "over the board." you can change what the pieces look like in the settings so it looks the same for both players.
What about redesign the graphics?