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I'm done with four presets yet. They are automated and with
rule-enforcement and detect the end of a game (but not by threefold
repetition or 50 moves rule). I have tested them and they seem to be
bugfree. Maybe you want to include them into the 'Games for Game
Courier' list.

Breakthrough:
http://play.chessvariants.org/pbm/play.php?game%3DBreakthrough%26settings%3DBreakthrough

Wildebeest Chess:
http://play.chessvariants.org/pbm/play.php?game%3DWildebeest+Chess%26settings%3DWildebeest+Chess+with+rules

Gess:
http://play.chessvariants.org/pbm/play.php?game%3DGess%26settings%3DGess+with+rules
Playing gess is a nuisance without an automated preset, so I wrote one. To
make the point-and-click movement usable, the preset expects that the
origin and destination coordinates of the direction stone are entered.
This is uncommon, normally a move is denoted by the coordinates of the
center of a piece (= 3x3 area containing a stone in the direction of
movement).

Squirrel Chess:
http://play.chessvariants.org/pbm/play.php?game%3DSquirrel+Chess%26settings%3DSquirrelChess1
This variant I have made up myself. The difference to orthochess is only
the 9x9 board and every side has an extra pawn and a squirrel which leaps
two squares orthogonally or diagonally or like a knight (as described in
the piececlopedia). Pawns promote to squirrels also.


BTW: how can I uncheck 'exclude pieces not in setup' when editing a
preset? Somehow it doesn't work.

Is it possible to select some pieces out of a piece set and assign them 
names entirely of upper- or lowercase letters, so that 'isupper' and
'islower' can be used to identify pieces of a side?