Gary Gifford wrote on Sat, Nov 4, 2006 01:00 PM UTC:
The Rules for Korean Chess, Draft by Roleigh Martin (c)1994,1995 is the
most thorough of Korean Chess Rules I have seen. I quote from them
regarding 'Passing.'
Rule 7c
Unlike Chinese Chess, if you have no other move to make,
except to put your King in check or checkmate, you can
'pass.' In other words, your King can stand still, if it
stays in safety and there are no other pieces it can move
at all (regardless if those other pieces would be
captured or not) and if it would otherwise (if a move had
to be made) cause the king to move into check or
checkmate. Gollon states that one declares his pass by
turning his King over, upside down, on the same spot.
Link: http://www.xmission.com/~gastown/afi/koreanch.htm
In regard to programs that play by correct rules, it is not always the case.
I played a Chinese Battle Chess that incorrectly allowed kings to face each other.