Comments/Ratings for a Single Item

This game reminds me of the movie Howl's Moving Castle. It's an interesting idea, but it would be tricky, if not impossible without added features, to do with Game Courier, especially with a Chinese board.

So, if one moves the river, can this cause pawns to demote when they are
again situated on their own side of the river?

If there is no game courier version likely, has the author tried playing
this with a ZRF or over the board?

I assume that the relative orientation of the palace is constant, i.e., the
edge closest to the opponent always faces the same direction and that the
palace cannot be reoriented, say, rotated through 90° as well as or in lieu
of other movement.  I assume from the description of the river's movement
as one step towards oneself or towards the opponent at a time that the
river maintains its orientation and does not rotate through 90° either.

This looks like an interesting variant.

Pawns cannot step sideways on friendly side of river, and can do it on opponent's side, wherever river is situated. Palace and river cannot be rotated 90 degrees, but it would be interesting variant to.
My idea about playing it with game courier: use pieces 'palace center' and palace center with pieces of different types and colors (expect opponent's general and advisors) in it. I have no idea about river.

John Smith has a moving palace and river also, dependent on matching piece locations, http://www.chessvariants.org/index/msdisplay.php?itemid=MSflexiblepalace.  http://www.chessbase.com/newsdetail.asp?newsid=6768