The other night, we were in this situation:
- Them, attacking: one 6/5 attacker with trample and first strike.
- Me, defending: a 1/1, 2/2, and 5/5 blocker. I assign all three as blockers in that order: 1/1 first, 2/2 second, 5/5 third. (There's benefits for me if the 1/1 and 2/2 die.)
As I understood it, this would have to happen (let's call this Interpretation A):
- Their attacker must assign at least 1 damage to the 1/1 before it can assign damage to any other blocker.
- Then it must assign at least 2 damage to the 2/2 before it can assign damage to the 5/5.