Wait i mean this extremely closed position that engines cannot analyze
How can i forgot that one isolated g pawn
This position ok
Not the old one where i forgot the isolated g pawn
And engine cannot analyze this
Second example most likely can't be analysed because this could never be legal in a real game. Try using fairy stockfish and see what happens.
I don't think SF worries too much about the legality, but it does worry about storage.
I normally give it a 2GB hash size.
If I give it a starting position with an extra row of pawns each on the players' third ranks it crashes. If I give it 4GB hash it runs.
I didn't try OP's position, but it will probably run given large enough hash.
As for @Raphael's second example, SF can analyse it (with default 16MB hash), it just can't get the correct answer. That's quite normal.
oh ok
Sorry - misinformation.
Hash shortage doesn't apply if the position is already mate.
wait how did you do that
I ran SF15 from the Windows command prompt, then sent it UCI commands. Cuts out questions about what the GUI's doing.
The search from your position was successful with 16MB hash. Both chess.com and the site that dare not speak its name should receive the last three lines in the display, but what they do with it after that is nothing to do with SF.
Given that chess.com comes up with a cp evaluation, it most likely gave SF the wrong FEN or it never called SF and the number came from somewhere else. Interestingly if you try game review it does say 0-1, but it takes an awfully long time to complete for a game with 0 moves - I gave up.
Sorry again - still misinformation (and libelling the chess.com GUI).
I used SF15 in the example I posted, but what you are actually looking at is an SF11 "feature". SF15 gets it right, but SF11 doesn't. It's a programming bug in the engine, not the GUI.
SF11 thinks you should take the checking pawn on g2 with your h2 bishop. (Maybe that's how it wins so many games.)
(when bishops move horizantally)
oh so there are 2 stockfish engines here?
oh yeah lichess has stockfish 14+
Wait i mean this extremely closed position that engines cannot analyze
How can i forgot that one isolated g pawn
This position ok
Not the old one where i forgot the isolated g pawn
And engine cannot analyze this
Second example most likely can't be analysed because this could never be legal in a real game. Try using fairy stockfish and see what happens.
I don't think SF worries too much about the legality, but it does worry about storage.
I normally give it a 2GB hash size.
If I give it a starting position with an extra row of pawns each on the players' third ranks it crashes. If I give it 4GB hash it runs.
I didn't try OP's position, but it will probably run given large enough hash.
As for @Raphael's second example, SF can analyse it (with default 16MB hash), it just can't get the correct answer. That's quite normal.
oh ok
Sorry - misinformation.
Hash shortage doesn't apply if the position is already mate.
wait how did you do that
I ran SF15 from the Windows command prompt, then sent it UCI commands. Cuts out questions about what the GUI's doing.
The search from your position was successful with 16MB hash. Both chess.com and the site that dare not speak its name should receive the last three lines in the display, but what they do with it after that is nothing to do with SF.
Given that chess.com comes up with a cp evaluation, it most likely gave SF the wrong FEN or it never called SF and the number came from somewhere else. Interestingly if you try game review it does say 0-1, but it takes an awfully long time to complete for a game with 0 moves - I gave up.
Sorry again - still misinformation (and libelling the chess.com GUI).
I used SF15 in the example I posted, but what you are actually looking at is an SF11 "feature". SF15 gets it right, but SF11 doesn't. It's a programming bug in the engine, not the GUI.
SF11 thinks you should take the checking pawn on g2 with your h2 bishop. (Maybe that's how it wins so many games.)