Larry Smith wrote on Tue, Nov 4, 2008 12:41 PM UTC:
An interesting variant. Though I am not fond of the idea of allowing the King to move into or remain in check.
This could easily be played with a referee. Each player, in addition to the standard field and pieces, would have a field where their individual Kings are setup. These two fields could be hidden by using boxes with the open side facing the appropriate player.
If both players have digital cameras, their King moves could be recorded when played. Thus, in conjunction with a written record of the game(sans the King moves), the validity of play could be verified without the need of a referee.