Mitteldeutscher Schachbund, 1877 (Anderssen 50-year Jubilee Congress, Leipzig)
Judging from the notes in Deutsche Schachzeitung, the details of
the congress were decided in April, and so the problem tourney
details may be assumed to have been decided then as well. However, no publication of
these prior to June have been identified so far. (The congress book confirms
this: in May the announcement was sent to interested parties, but it was not
published until June, the month before the congress started.)
27 sets competed.
The preliminary awards were announced during the congress. The Kondelik
#4 (1) was used for the congress solving tournament.
The congress book identifies this tourney as "Problemturnier des
mitteldeutschen Schachbundes," in difference to the rest of the congress,
which is not expressly stated to be that of any chess organizations.