Jin doesn't support the wild 4 variant and the uwild variant on FICS. (see "help boards" for the uwild variant.) Also it can't start game which use a special opening. (e.g. "match someone eco C50"). Because it is normal chess with only a different starting position, it would be nice if Jin support it. It only support such game, if it is examined, but you can't play such games against any opponents. You get only the message from Jin, that it doesn't support it, when you want to start such games. Because all games string are of the form .*/.* (e.g. eco/C50) , it would be nice, if Jin could parse such Strings and support such chess variants.