It lasted one day, about 22-23 hours I think, but saw a lot of territory shift and back and forth. What finally did it in, from the biased view of a devout knit, was a combination from last night/very early when both the rooks and bish made advances into nitland and either held each other off or ignored each other, then at some point later this morning the bish gained the advantage and pushed into rook territory. The Rooks didn't mount an effective defense (although they did repeatedly and effectively to defend the one field ~one sector away from the knights strats) and very quickly (within 60-90 minutes) the bish gained the share of rook fields they needed to win, and did.