Derek Nalls wrote on Sat, Aug 9, 2008 10:27 PM UTC:
The *.fen recommended by Hecker allowed me to resume playtesting. In the
future, this problem should be avoidable either by manually precluding the
potential for attempting or making illegal moves from the *.fen OR by
appropriately refining Joker80 and/or Winboard F. Once I moved past the
problem, I removed the web page with the bug report. Fortunately, Hecker
still possessed the forfeited game *.pgn for Muller to examine.