A Little Tuebingen Story

here on the left is a photograph of two old buildings in the market square at Tuebingen. These ones don't get on the postcards, because there's no shortage of timber frames in the old town, and this pair is fairly unremarkable. Except that if you look closely at the one on the left, you'll see all its windows are brown, save one which has a white frame. The room with the white window now belongs to the other house, and can only be accessed from the room next to it with similar fenestration.
The stories explaining how this change of ownership came to be are many, but almost all involve payment of a debt, gambling or otherwise. Thankfully the confirmed documented true story is obscured by a kind of volksfog, allowing taletellers to embellish, although I promise that's been kept to a minimum here.