Obscured
A target is Obscured if there is Intervening Heavy Terrain between them and the attacker, and the terrain is more than 1" from both operatives. The attacker cannot retain crits and discards 1 success.
A target is Obscured if there is Intervening Heavy Terrain between them and the attacker, and the terrain is more than 1" from both operatives. The attacker cannot retain crits and discards 1 success.
Similarly to cover, the attacker can draw the targeting lines so that the terrain is not intervening and the target is not obscured.
The target cannot be Obscured by Heavy terrain within 1" of it. Compare the two targets. The one further away is more than 1" from the stronghold wall (heavy terrain). It is obscured. The other target is within 1" of the wall. It's not obscured. Instead, it's In cover.
The 1" exception applies to both operatives. Here the attacker is within 1" of the Heavy terrain (see ring), so the target is not Obscured even though the terrain is Intervening.
Here, the attacker is within 1" of one part of the terrain, but the other end is intervening, and more than 1" from it. The target is Obscured.
An operative cannot be In Cover from and Obscured by the same terrain feature. If it would be, the defender must select one of them (Cover or Obscured) for that sequence when their operative is selected as the Valid Target.
When Cover and Obscured come from different terrain features, the operative benefits from both. Here the target is In Cover from a terrain (within 1") and Obscured by a separate Heavy terrain.