Sting SF Black Hole 11

[lech]

Now Sting starts with the UCI: OldSting option as the default value.
To use the Black Hole idea, set the UCI: BlackHole option to true.
This is a safe choice. The "Black Hole" idea requires knowledge of it, otherwise it is impossible to
correctly interpret the returned data.
Moreover, Sting's Black Hole idea may not work correctly in time management mode (play).

download: https://www.mediafire.com/file/oicgues2 ... 1.zip/file

[peter]

Thanks for the new version!

Sting is one of the very few if not the only one engine to solve this Salai- study

https://www.yacpdb.org/#search/NEsxazFc ... LzEvMA==/1

with single thread (3.5GHz) in 1 minute:

Code: Select all

Sting Black Hole 11 (based on Stockfish 2.1.1) 64bit by Marek Kwiatkowski
position fen 4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - -
setoption name hash value 1024
go infinite
...
info depth 30 multipv 1 score cp 157 lowerbound nodes 180697475 nps 2927128 time 61732 pv f3f4 g5f4 e8d7 f4d2 d7c6 d2a5 b3b4 c5b4 c2b3 g8g7 c6d5 g7f6 d5e4 h6h5 e4f4 f6g6 f4e5 h5h4 e5f4 g6h5 f2f3 h5h6 f4g4
...
stop
info depth 30 multipv 1 score cp 264 nodes 307145564 nps 2872049 time 106943 pv f3f4 g5f4 e8d7 f4d2 d7c6 d2a5 b3b4 c5b4 c2b3 g8g7 c6d5 g7f6 d5e4 h6h5 e4f4 f6g6 f4e5 h5h4 e5f4 g6h5 f2f3 h5h6 f4g4 h4h3 g4h3 h6g5 h3g3 g5f5 f3f4 f5e4 g3g4 e4d4 g4g5
info nodes 307145564 nps 2871485 time 106964
bestmove f3f4 ponder g5f4

Notice the major dual with 1.Bd1, which yet isn't any easier to be found than main solution 1.f4 is, regards

[lucario6607]

What is the black hole thing? and is this nnue or hce?

[Dann Corbit]

It uses a classical, hand written evaluation.
If you want to make sense of engine names, we have fruit, stockfish, clover, integral, halogen, Beowulf, and booot to ponder too.
I would not read too much into the name. My best guess: It sucks all of his time into an inescapable singularity. He has tried to escape 11 times without success.
Sting tends to be really good for certain classes of problems.