Oh that refreshes my memory. Some 25 years ago I did chess training with inmates in a German prison. That was quite an experience. We never did anything tournam

Oh that refreshes my memory. Some 25 years ago I did chess training with inmates in a German prison. That was quite an experience. We never did anything tournament-level, but mostly a somewhat alternative offering as part of the resocializing efforts before they completed their sentence of 10+ years. On other sports like football (soccer) there were prison teams however participating in the normal league system. With the little difference that they only had home matches. It was said, while I never checked, it was the fairest team by amount of yellow/red cards.