When I play against a friend in real life we have the agreement that
when one of us makes a stupid move. For instance, move your queen
forward, attacking, to a place where it can be taken right away, then
we allow the opponent to take the move back. This often results in
a nicer game which isn't disrupted by a few foolish mistakes.
Sometimes I'm playing games online with this friend as well. Could
you add a button which requests a move takeback by someone. The
other player should then be able to allow or refuse this takeback.
Could you add this?