In Tafl games (I'm specifically playing Tablut if it makes a difference) Black wins if they capture the White king by surrounding it on all four sides.
Suppose the king and one or more adjacent pawns in a block are all completely surrounded and White has no other pawns so they cannot move. Is there any consensus on whether this is stalemate (like in Chess if the player can't move), or, a win for Black? Or is it just "house rules"?
Most of the rule sets I've found do not mention it explicitly. So the implication is it's a stalemate, but they aren't very official.
(This ruleset suggests you take away one pawn in a blocked group per turn, in my scenario it would amount to the same thing as an immediate win.)