In over the board chess, you can play an illegal moves. You will likely be penalized for that, either lose the game or more time for the opponent. This is part of the game, and you'll be happy if your opponent makes an illegal move during a tournament game.
However, in online chess, not only Lichess it is not possible to play them. The software only allows you to play legal moves.
For example, in OTB if you're under check and you don't realize it, you might move another piece but the king, this would be an illegal move and you'll be penalized. In an online game, if you're under check, you could only play a move that stops the check.
I believe this would make online chess more real and also fun!
What do you think?
However, in online chess, not only Lichess it is not possible to play them. The software only allows you to play legal moves.
For example, in OTB if you're under check and you don't realize it, you might move another piece but the king, this would be an illegal move and you'll be penalized. In an online game, if you're under check, you could only play a move that stops the check.
I believe this would make online chess more real and also fun!
What do you think?