Had just won a victory on immortal and I was after a different challenge. I hit upon the idea of a single city challenge. It was in a previous version (4?) and I read online about someone doing it. Did it on Prince and won quite easily. When I play properly I always do random leader but this time I chose my Civ carefully (Peter). Will try on King next time. Quite enjoyed it and it was definitely good practice for the real thing. Any thoughts?