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This position breaks stockfish (both 12 and 14)

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Avatar of Goofi_Goobr
Goofi_Goobr
Sep 14, 2021
0
#1

3B4/1r2pN2/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PP6/3B4 w - - 0 1

With the above FEN, stockfish cannot correctly analyze the position, as stockfish rates it winning for black, however, the position is equal after Ba4+ Kxa4, then checking continuously until a wall of pawns is built.

Avatar of justbefair
justbefair
Sep 14, 2021
0
#2
ItzFruitless wrote:

3B4/1r2pN2/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PP6/3B4 w - - 0 1

With the above FEN, stockfish cannot correctly analyze the position, as stockfish rates it winning for black, however, the position is equal after Ba4+ Kxa4, then checking continuously until a wall of pawns is built.

Here it is.
I can see that it would be a challenge for a computer. 
But it seems quite happy to chug away.
How did you conclude it was "broken"?
 
Did you run it at least overnight? Unless you did, I can't agree that it breaks Stockfish.

 



Avatar of justbefair
justbefair
Sep 14, 2021
0
#3

This position should be easier to evaluate.

I don't have the patience to let it go to depth = 100 to see if it would recognize the draw.

Did you?

Avatar of Aron_08
Aron_08
Sep 14, 2021
0
#4

In the original puzzle there isn't a Knight on f7.

Avatar of justbefair
justbefair
Sep 14, 2021
0
#5
Aron_08 wrote:

In the original puzzle there isn't a Knight on f7.

What do you mean? It's in the FEN.

3B4/1r2pN2/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PP6/3B4 w - - 0 1

That's what the "N" stands for.

Avatar of Aron_08
Aron_08
Sep 14, 2021
0
#6

The original puzzle was made by W.E Rudolph (Not 100% about this) in 1912 and there was not a knight.