Sting SF 17

[Ovyron]

Ok, here's the patched Sting 17 package:
https://www67.zippyshare.com/v/hmdNuRVr/file.html

I've replaced the <> by () in all 3 versions (including the source).

Franz

Thanks!

[lech]

One very important tip (advice) for users of Sting 17.
Now PLY_MAX is only 100 moves. It means that Sting is ablae to display the solution (PV-line) only of 100 moves, maximally.
Of course, Sting is able to find a mate with much more than 100 moves. Once it was: "mate in 92" (184 moves).
And then (higher depths), it may happen that Sting (score) goes up and down, or Sting is working without any effect.
It is a good moment to stop searching and start again (without clearing hash ) or (or next if no effect) to start self-playing (auto-playing).

One example F. Amelung's (by YACPDB) study:

[d]qnb5/rp1p4/pPpP4/P1P5/2P5/6K1/8/6Nk w - - 0 1
setoption name hash value 1024
setoption name threads value 1
go movetime 7200000

Sting 17 returns the mate in 80 moves, quickly. It needs 159 half-moves (plies), and MAX_PLY is only 100.

info depth 41 multipv 1 score mate 80 lowerbound nodes 308342414 nps 926362 time 332853 pv g3f2 h1h2 g1f3 h2h3 f3d2 h3g4 f2e3 g4g5 e3e4 g5h4 e4f4 h4h3 f4f3 h3h4 d2e4 h4h3 e4g5 h3h2 f3f2 h2h1 g5e4 h1h2 e4g3 h2h3 g3f1 h3g4 f2e3 g4f5
info depth 41 multipv 1 score mate 80 lowerbound nodes 308342414 nps 926323 time 332867 pv g3f2 h1h2 g1f3 h2h3 f3d2 h3g4 f2e3 g4g5 e3e4 g5h4 e4f4 h4h3 f4f3 h3h4 d2e4 h4h3 e4g5 h3h2 f3f2 h2h1 g5e4 h1h2 e4g3 h2h3 g3f1 h3g4 f2e3 g4f5
stop
To watch the full solution you can start self-playing (auto-playing).
go movetime 30000 play
g3f2 h1h2 g1f3 h2h3 f3e5 h3h2 e5g4 h2h1 g4e3 h1h2 e3f1 h2h1 f2f3 h1g1 f1g3 g1h2 f3f2 h2h3 g3f1 h3g4 f2e3 g4f5 f1h2 f5e5 h2g4 e5f5 e3f3 f5g5 g4e3 g5h5 f3f4 h5h4 e3g4 h4h5 g4f2 h5h4 f4f3 h4g5 f3e4 g5h5 e4f5 h5h4 f5f4 h4h5 f2h3 h5h6 h3g5 h6g6 g5f3 g6f6 f3e5 f6e6 e5g4 e6f7 f4f5 f7g7 g4e5 g7h7 e5g6 h7g7 g6f4 g7h7 f5g5 h7g7 f4h5 g7f7 g5f5 f7g8 f5g6 g8f8 h5f4 f8g8 f4h3 g8f8 h3g5 f8e8 g5f7 e8f8 f7h6 f8e8 h6f5 e8f8 f5e7 f8e8 e7c8 e8f8 c8a7 f8g8 a7c8 g8f8 c8e7 f8e8 g6g7 e8d8 g7f7 a8a7 b6a7 b7b6 a7b8q Black is mated

It returns mate in 49 moves now.
Of course, I am working at an old dual core. There are much stronger CPUs and you may use less than 30 seconds per move.

[lech]

Ok, here's the patched Sting 17 package:
https://www67.zippyshare.com/v/hmdNuRVr/file.html

I've replaced the <> by () in all 3 versions (including the source).

Franz

Thanks!

Sting is dedicated to intelligent people. Next time try to do it yourself.

[Ovyron]

I don't think leaving a bug there that makes people unable to use your engine at all is the smartest thing I've seen a developer do

[lech]

Ok, here's the patched Sting 17 package:
https://www67.zippyshare.com/v/hmdNuRVr/file.html

I've replaced the <> by () in all 3 versions (including the source).

Franz

Thanks!

Sting is dedicated to intelligent people. Next time try to do it yourself.

Of course, I never thought that you are not able to do it yourself, but it seems to be strange to thank for others.
Sorry, if my stupid joke touches you (or others) personally.

[lech]

For a longer time i wll not be here and maybe (may happen) it is the last version of Sting.
Sorry, if sometimes I was too edgy!

[Ovyron]

Good luck in whatever you decide to pursue as your endeavor lech

If you ever decide to work on an improved version of Sting, I think we all hope that it reaches its full potential in quality out-of-the-box.