Sting SF 4.8.1 release

[lech]

I added this topic olny to make easy to find this information for fans of my work.

Version Sting SF 4.8.1 is here:
http://www.mediafire.com/download/9qaz6 ... sf-481.zip

BTW. The previous version was downloaded 900 times.

[Hurnavich]

Many thanks for your work,and contribution to us chess addicts.

[gerold]

I added this topic olny to make easy to find this information for fans of my work.

Version Sting SF 4.8.1 is here:
http://www.mediafire.com/download/9qaz6 ... sf-481.zip

BTW. The previous version was downloaded 900 times.

Thank you.

Best,
Gerold.

[lech]

Many thanks for all who support my project. Any critical opinions about the work of Sting (with examples) are welcome.

Programmers are deceiving us. We can be critical for manufacturers of shoes, but not for programmers. Why? Maybe it lost us.

[Dann Corbit]

When several of the standard programs can't solve a problem, I like to try Sting.

It's always good to have another voice to hear.

[jpqy]

Hardendmiddle on i7 970 4.0Ghz 6cores.10sec./position!

Oplossen: C:\Users\jp SSD\Documents\ChessBase\Testsets\hardmiddle\hardmiddle .cbh
Maximale tijd = 10s.

1. Campora - Morovic, 1982 Opgelost in 7.66s/23; Opgelost: 1
2. Panov - Taimanov, 1952 > 10s.
3. Hellers - Hansen, Malmo 1997 > 10s.
4. Asauskas - Malisauskas, Vilnius 1964 > 10s.
5. Kholmov - Bronstein, Kiew 1964 > 10s.
6. Kesoene - Rubtsova, WCh-Final 1984 > 10s.
7. Polugaevsky - Torre Gelfer, Moscow 1981 > 10s.
8. Bronstein - Olafsson, Portoroz Interzonal 1958 Opgelost in 0.08s/9; Opgelost: 2
9. Alekhine,A - Euwe,M, AVRO Holland 1938 > 10s.
10. Pos. 1, 2012 Opgelost in 2.59s/21; Opgelost: 3
11. Pos. 2, 1996 > 10s.
12. Pos. 3, 1996 Opgelost in 4.77s/19; Opgelost: 4
13. Karpov - Gelfand, Linares 1993 > 10s.
14. Tyomkin - McDonald, Oakham GM 2001 > 10s.
15. Akesson - Stefansson, Nordic-ch 1997 > 10s.
16. Yusupov - Dolmatov, Wijkaan Zee 1991-mch. Cand. 1991 > 10s.
17. PengXiaomin - Motylev, CHN-RUS 2001 Opgelost in 0.08s/7; Opgelost: 5
18. Romanishin - Smagin, Julian Borowski 2001 Opgelost in 0.56s/26; Opgelost: 6
19. Ionov - Sergienko, RUS-chT 1999 > 10s.
20. Movsesian - Sokolov, EU-chT 1999 > 10s.
21. Mortensen - Van der Weide, Reykjavik 1998 Opgelost in 0.33s/13; Opgelost: 7
22. Zakharevich - Guliev, Chigorin memorial 1997 Opgelost in 0.27s/13; Opgelost: 8
23. Minasian - Jonkman, Anibal op 2000 > 10s.
24. Svetushkin - Kruppa, Kiev 2000 > 10s.
25. Dolinskij - Tosic, Geller memorial 1999 > 10s.
26. Botvinnik - Capablanca, Avro 2012 Opgelost in 3.50s/22; Opgelost: 9
27. Ivanchuk,V - Jussupow,A, Candidates qf3 g/60 rapid 1991 Opgelost in 5.24s/17; Opgelost: 10
28. Borkowsky - Nunn, European Juniores 1974 > 10s.
29. Tal,M - Larsen,B, Candidates sf1 1965 > 10s.
30. Pos. 4, 2010 > 10s.

Sting SF 4.8
Resultaat: 10 op 30 = 33.3%. Gemiddelde tijd = 2.50s / 17.00

Engine name shows Sting SF 4.8 but i run Sting SF 4.8.1

JP.

[Jouni]

I tested version 4.8 64 bit. It was worse than normal SF 6 in both Arasan (Dart) and Brilliant (Eigenmann) test suites. In mate solving it was equal.

[lech]

When several of the standard programs can't solve a problem, I like to try Sting.

It's always good to have another voice to hear.

In midddle-games you are right.

If you (and other) like to hear I explain my project.

I started with a position (first branch):
[d]8/5pKN/5Pp1/5kP1/8/Bb6/8/7q b - - bm Qxh7;
It is a very easy for chessplayers sacrifice. At first human look, it is mpossible to stop the black pawn "g6".
It happens when a sacrifice leads to a longer play ("horizon effect").

Next, Sting solved two serious problem with zugzwang positions. First "zugzwang with beta == VALUE_DRAW" and second "zugzwang delayed by pawn neutral moves (horizon effect)".
The second branch is represented by again very easy for human position:
[d]5K2/k4p1p/5p1p/1p3p2/bP6/1p6/1P5p/7B w - - bm Ke8(e7);
The black King is trapped soon and all black pawns to get lost.

Next branch, solved by Sting, is applies to "trapped pieces in endgames".
[d]4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5;
After 1.Qxe5 fxe5 2.Rf1 and next 3.Bd1 and black can't do something useful and again it is very easy to guess.

And last branch "sacrifice leading to fortress" and an easy representative:
[d]7r/p3k3/2p5/1pPp4/3P4/PP4P1/3P1PB1/2K5 w - - bm Kd1;
Again, each who can see fortress, immediatelly solves it.

All the code solutions are working together, it means e.g. the second example is impossible to solve without the code for first branch.

Unfortunately, all the samples are very good material for scientist pressing works at artifical inteligence. In my opinion it is not good if top engines remains silent in such positions.

Sting is not "Saint Grail".
Alpha-beta search in chess is very easy without these problems, sacrifices, zugwangs etc.
Programmers may choose such an sensitivity for their engines. It always means that they may only want to save the ELO strength what is very difficult if the sensitivity will be too high.
It is a personal choise to leave such problems and gain next ELO points by aggressive prunning.

[lech]

I tested version 4.8 64 bit. It was worse than normal SF 6 in both Arasan (Dart) and Brilliant (Eigenmann) test suites. In mate solving it was equal.

I am very happy that Stocfish can solve tough positions.
Sting was not created to challange with Stockfish. Why I did it I described above. It menas Sting try to solve positions which were not solved by top engines and to show how someone can do it. I hope my work gave a good effect and we will have engines free of some shame behaviours.
Believe me I don't like programming and I have some more interesting occupations. E.g. doing nothing.
I also hope that the curse: "Just ignore him!" will be removed.

[Vinvin]

Stockfish have some doubts about some positions :
I'll do deeper investigations.

Code: Select all

[Event "AVRO"]
[Site "Holland"]
[Date "1938.??.??"]
[Round "?"]
[White "Alekhine, Alexander"]
[Black "Euwe, Max"]
[Result "1-0"]
[ECO "D13"]
[SetUp "1"]
[FEN "2n3kr/3q1pp1/p3pn2/1pQp3P/3P4/P1P1PBB1/5P1P/1R4K1 w - - 0 24"]
[PlyCount "31"]
[EventDate "1938.11.??"]
[EventType "tourn"]
[EventRounds "14"]
[EventCountry "NED"]
[Source "ChessBase"]

24. h6 $1 gxh6 25. Be5 Kg7 26. a4 bxa4 27. c4 Ne7 28. cxd5 Nexd5 29. Kh1 Rc8
30. Rg1+ Kh7 31. Qa3 Rg8 32. e4 Rxg1+ 33. Kxg1 Qb5 34. exd5 Qb1+ 35. Kg2 Qg6+
36. Bg3 Nxd5 37. Bxd5 exd5 38. Qxa4 h5 39. h4 1-0


[Event "Linares"]
[Site "?"]
[Date "1993.??.??"]
[Round "?"]
[White "Karpov"]
[Black "Gelfand"]
[Result "1-0"]
[SetUp "1"]
[FEN "1k5r/pb3p1p/1q2rp1b/2p5/1pQ1P3/1P3N2/P3BPPP/3R1RK1 w - - 0 1"]
[PlyCount "13"]
[EventDate "1993.??.??"]

1. Rd5 $1 Rhe8 2. Bd3 Rd8 3. Rd1 Red6 4. Be2 Bxd5 5. exd5 Qb7 6. Qh4 Bf8 7. Bc4
1-0


[Event "Oakham GM"]
[Site "?"]
[Date "2001.??.??"]
[Round "?"]
[White "Tyomkin"]
[Black "McDonald"]
[Result "0-1"]
[SetUp "1"]
[FEN "r4rk1/ppnqp2p/3p2p1/2pP4/P1P2B1P/6P1/1P3PK1/R2Q1R2 b - - 0 1"]
[PlyCount "3"]
[EventDate "2001.??.??"]

1... Rxf4 $1 2. gxf4 Rf8 0-1


[Event "RUS-chT"]
[Site "?"]
[Date "1999.??.??"]
[Round "?"]
[White "Ionov"]
[Black "Sergienko"]
[Result "0-1"]
[SetUp "1"]
[FEN "5rk1/ppqb2pp/2n1p3/3pP3/2pP4/P1P1BN1Q/2P2PP1/R3K3 b Q - 0 1"]
[PlyCount "15"]
[EventDate "1999.??.??"]

1... Rxf3 $1 2. Qxf3 Be8 3. Qh3 Qd7 4. a4 Bg6 5. Kd1 Na5 6. Bc1 Bf5 7. Qh4 h6
8. f3 Kh7 0-1


[Event "EU-chT"]
[Site "?"]
[Date "1999.??.??"]
[Round "?"]
[White "Movsesian"]
[Black "Sokolov"]
[Result "1-0"]
[SetUp "1"]
[FEN "3rrnk1/p1n1qpp1/1p5p/2pRP3/2P4P/1P2Q1PB/PB5K/4R3 w - - 0 1"]
[PlyCount "9"]
[EventDate "1999.??.??"]

1. Red1 $1 Nxd5 2. cxd5 Ne6 3. d6 Qb7 4. Bg2 Qd7 5. Bd5 1-0


[Event "Chigorin memorial"]
[Site "?"]
[Date "1997.??.??"]
[Round "?"]
[White "Zakharevich"]
[Black "Guliev"]
[Result "1-0"]
[SetUp "1"]
[FEN "r1b2rk1/pp3pb1/3q2pp/2nP4/6P1/2P2N2/P1Q1BPP1/2BR1RK1 w - - 0 1"]
[PlyCount "7"]
[EventDate "1997.??.??"]

1. Rd4 $1 Bxd4 2. cxd4 Na6 3. Ne5 Rd8 4. Qd2 1-0


[Event "Anibal op"]
[Site "?"]
[Date "2000.??.??"]
[Round "?"]
[White "Minasian"]
[Black "Jonkman"]
[Result "1-0"]
[SetUp "1"]
[FEN "2r1rbk1/p1qn2p1/3n1pp1/P1p1p3/1p2P1P1/1N3Q1P/1PP2P2/R1BR1BK1 w - - 0 1"]
[PlyCount "13"]
[EventDate "2000.??.??"]

1. Rxd6 $1 Bxd6 2. Bc4+ Kf8 3. Qd3 Ke7 4. Be3 Nf8 5. Qd5 Qc6 6. Qf7+ Kd8 7.
Qxg7 1-0


[Event "Kiev"]
[Site "?"]
[Date "2000.??.??"]
[Round "?"]
[White "Svetushkin"]
[Black "Kruppa"]
[Result "0-1"]
[SetUp "1"]
[FEN "r1r3k1/1bq2pp1/p4n1p/1p1npB2/PP6/2P2N2/1BQ2PPP/R3R1K1 b - - 0 1"]
[PlyCount "13"]
[EventDate "2000.??.??"]

1... Nf4 $1 2. axb5 axb5 3. Bxc8 Qxc8 4. Rxa8 Bxa8 5. Ra1 Be4 6. Qd1 Nxg2 7.
Nxe5 Nh4 0-1


[Event "European Juniores"]
[Site "?"]
[Date "1974.??.??"]
[Round "?"]
[White "Borkowsky"]
[Black "Nunn"]
[Result "1-0"]
[SetUp "1"]
[FEN "r1bq1rk1/pp1nppb1/8/4ppN1/3p4/2NB4/PPP3P1/R1BQK2R w KQ - 0 0"]
[PlyCount "7"]

1. Nce4 $1 Qb6 2. Bc4 Qg6 3. Nxf7 Rxf7 4. Ng5 1-0


[Event "Candidates sf1"]
[Site "Bled"]
[Date "1965.??.??"]
[Round "6"]
[White "Tal, Mihail"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "B04"]
[SetUp "1"]
[FEN "r1b1k2r/pp2bpp1/2p1p2p/3nPq2/B7/P1N5/1PP1QPPP/R1B2RK1 w kq - 0 16"]
[PlyCount "37"]
[EventDate "1965.07.23"]
[EventType "match"]
[EventRounds "10"]
[EventCountry "YUG"]
[Source "ChessBase"]

16. Nb5 $1 cxb5 17. Qxb5+ Kd8 18. c4 Qxe5 19. cxd5 Bd6 20. g3 Qxd5 21. Qe2 Ke7
22. Rd1 Qa5 23. Qg4 Qf5 24. Qc4 Qc5 25. Qd3 Qd5 26. Qc3 Be5 27. Qe1 Qc5 28. Bd2
Kf6 29. Rac1 Qb6 30. Be3 Qa6 31. Qb4 b5 32. Bxb5 Qb7 33. f4 Bb8 34. Bc6 1-0

Hardendmiddle on i7 970 4.0Ghz 6cores.10sec./position!

Oplossen: C:\Users\jp SSD\Documents\ChessBase\Testsets\hardmiddle\hardmiddle .cbh
Maximale tijd = 10s.

1. Campora - Morovic, 1982 Opgelost in 7.66s/23; Opgelost: 1
2. Panov - Taimanov, 1952 > 10s.
3. Hellers - Hansen, Malmo 1997 > 10s.
4. Asauskas - Malisauskas, Vilnius 1964 > 10s.
5. Kholmov - Bronstein, Kiew 1964 > 10s.
6. Kesoene - Rubtsova, WCh-Final 1984 > 10s.
7. Polugaevsky - Torre Gelfer, Moscow 1981 > 10s.
8. Bronstein - Olafsson, Portoroz Interzonal 1958 Opgelost in 0.08s/9; Opgelost: 2
9. Alekhine,A - Euwe,M, AVRO Holland 1938 > 10s.
10. Pos. 1, 2012 Opgelost in 2.59s/21; Opgelost: 3
11. Pos. 2, 1996 > 10s.
12. Pos. 3, 1996 Opgelost in 4.77s/19; Opgelost: 4
13. Karpov - Gelfand, Linares 1993 > 10s.
14. Tyomkin - McDonald, Oakham GM 2001 > 10s.
15. Akesson - Stefansson, Nordic-ch 1997 > 10s.
16. Yusupov - Dolmatov, Wijkaan Zee 1991-mch. Cand. 1991 > 10s.
17. PengXiaomin - Motylev, CHN-RUS 2001 Opgelost in 0.08s/7; Opgelost: 5
18. Romanishin - Smagin, Julian Borowski 2001 Opgelost in 0.56s/26; Opgelost: 6
19. Ionov - Sergienko, RUS-chT 1999 > 10s.
20. Movsesian - Sokolov, EU-chT 1999 > 10s.
21. Mortensen - Van der Weide, Reykjavik 1998 Opgelost in 0.33s/13; Opgelost: 7
22. Zakharevich - Guliev, Chigorin memorial 1997 Opgelost in 0.27s/13; Opgelost: 8
23. Minasian - Jonkman, Anibal op 2000 > 10s.
24. Svetushkin - Kruppa, Kiev 2000 > 10s.
25. Dolinskij - Tosic, Geller memorial 1999 > 10s.
26. Botvinnik - Capablanca, Avro 2012 Opgelost in 3.50s/22; Opgelost: 9
27. Ivanchuk,V - Jussupow,A, Candidates qf3 g/60 rapid 1991 Opgelost in 5.24s/17; Opgelost: 10
28. Borkowsky - Nunn, European Juniores 1974 > 10s.
29. Tal,M - Larsen,B, Candidates sf1 1965 > 10s.
30. Pos. 4, 2010 > 10s.

Sting SF 4.8
Resultaat: 10 op 30 = 33.3%. Gemiddelde tijd = 2.50s / 17.00

Engine name shows Sting SF 4.8 but i run Sting SF 4.8.1

JP.