A question about Outpost Knights / Bishops

[AndrewGrant]

An outpost square cannot be attacked by an enemy pawn. This includes the pawns current position, or if the pawns are advanced. Is it still an outpost square if there is a pawn which could advance to attack the outpost, but it is blocked by one of it's own pieces?

[PK]

I always thought it should work, but never succeeded with that heuristic. However, You can gain by two ideas used in Stockfish:

1) minor pieces defended by a pawn can get (a part of) outpost bonus even if attackable by a pawn. This deals with some of the positions Ypour heuristic would cover.

2) minor pieces behind a pawn can get small bonus if they are on the own half of the board.

[mar]

I only have knight outpost, it worked for me.
The idea is very simple: if knight is protected by a pawn and there are no opposing pawns on neighbor files with rank > knight rank (i.e. similar to passer table),
give a bonus based on rank and file (I don't use a matrix here but simply separate weights for file and rank).

[cdani]

I also have a semi outposted bonus, when the supposed attacking pawn cannot attack because is blocked by an own pawn, which must be no attackable by another pawn or must be defended by another second own pawn. All in all a bit complicated.

[Rebel]

And as I recall no bonus if the number of (own) pawns is less than 5.