Progressive chess

Does anyone know of a computer program that plays progressive chess?
The site pathguy.com/chess/ScotchCh.htm has a very weak java applet,
and that's the only one I'm aware of.

Is there a site that allows you to play progressive chess against human
opponents in real time (not just by email)?

(for those who don't know, progressive chess is a chess variant where
white makes one move, then black makes two moves, then white makes
three moves, and so on. giving check automatically ends your turn even
if you have some moves left, and you must get out of check on the first
move of your turn or you lose the game.)

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