You can type px to make it, if you only have one. Be aware of early mate possibilities, too. There is a special ICC kriegspiel channel, channel 116. The standard set of pieces is used. Rooks are in their usual position, and castling is allowed.
Bishops are always on opposite colors.
The standard set of pieces is arranged randomly on the first and eighth ranks. Black's arrangement always mirrors white's. Castling is not allowed. Black's arrangement always mirrors white's. Castling is not allowed.