Help identify this game (BBC Micro) - comp.sys.acorn.games

Message from discussion Help identify this game (BBC Micro)
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From: Zedex Dragon <cheve...@gmail.com>
Newsgroups: comp.sys.acorn.games
Subject: Help identify this game (BBC Micro)
Date: Fri, 3 Jul 2009 04:03:10 -0700 (PDT)
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I have a vague recollection of playing a two-player game on the Beeb
more than 20 years ago. One player was a priest, the other was a
vampire. The play area was a graveyard and the aim was to change the
graves to your own colour (white or black accordingly). I think there
might have been day and night phases where you could attack the other
player. Would love to play it again. Does anyone else remember it?