Sting SF 7.3

Discussion of anything and everything relating to chess playing software and machines.

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lech
Posts: 1170
Joined: Sun Feb 14, 2010 10:02 pm

Re: Sting SF 7.3

Post by lech »

Sting SF is really extraordinary !!
And it is one of main goals of my project. :D
Maybe, I can't be friendly, but let me be useful.
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Vinvin
Posts: 5301
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Sting SF 7.3

Post by Vinvin »

lech wrote:One of my ideas needs still some important new version.

download: http://www.mediafire.com/download/sx4ou ... -sf-73.zip
I just downloaded (yes, I'm a bit late :-) ).
I found a bug (which is the same in V7.2).
In this position, after found Rd5 is mate, it comes back on f2 with a mate in 7 score, but after f2, it's not mate in 7.

[d]6N1/6p1/1B2P3/6r1/6Pk/5ppP/6P1/7K b - - 0 1

Code: Select all

Sting-sf-73:
...
 11	00:02	 37k	16k	-10,74	1. ... f2 2.Bxf2 gxf2 3.Kh2 Rxg4 4.hxg4 f1Q 5.Ne7 Qf4+ 6.Kg1 Qc1+ 7.Kf2 Qc5+ 8.Kf3 Qxe7 9.g3+ Kg5
 12-	00:02	 41k	18k	-10,86	1. ... f2
 12	00:02	 42k	18k	-10,74	1. ... f2 2.Bxf2 gxf2 3.Kh2 Rxg4 4.hxg4 f1Q 5.Ne7 Qf4+ 6.Kg1 Qc1+ 7.Kf2 Qc5+ 8.Kf3 Qxe7 9.g3+ Kg5
 13-	00:02	 49k	21k	-10,86	1. ... f2
 13	00:02	 54k	24k	-10,94	1. ... f2 2.Bxf2 gxf2 3.Kh2 Rxg4 4.hxg4 f1Q 5.Ne7 Qf4+ 6.Kg1 Qd4+ 7.Kf1 Kxg4 8.Ke2 Qe5+ 9.Kd3 Qd6+ 10.Kc4 Qxe7
 14-	00:02	 61k	26k	-11,07	1. ... f2
 14-	00:02	 65k	28k	-11,19	1. ... f2
 14-	00:02	 78k	34k	-11,64	1. ... f2
 14	00:02	 89k	39k	-11,87	1. ... f2 2.Ne7 f1Q+ 3.Bg1 Qe1 4.Nf5+ Rxf5 5.gxf5 Kg5 6.e7 Qxe7 7.f6 gxf6 8.Bb6 Qe1+ 9.Bg1 Qe2 10.Ba7 Qf1+ 11.Bg1
 15-	00:02	 98k	42k	-12,00	1. ... f2
 15-	00:02	 104k	45k	-M7	1. ... Rd5
 15-	00:02	 104k	45k	-M7	1. ... Rd5
 16	00:02	 710k	300k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 17	00:02	 866k	363k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 18	00:02	 1 099k	459k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 19	00:02	 1 349k	560k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 20	00:02	 1 611k	665k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 21	00:02	 1 878k	770k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 22	00:02	 2 153k	878k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 23	00:02	 2 424k	982k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 24	00:02	 2 696k	1 086k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 25	00:02	 2 976k	1 190k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 26	00:02	 3 254k	1 292k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 27	00:02	 3 530k	1 392k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 28	00:02	 3 805k	1 491k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 29	00:02	 4 102k	1 594k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 30	00:02	 4 402k	1 699k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 31	00:02	 4 704k	1 803k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 32	00:02	 4 980k	1 895k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 33	00:02	 5 256k	1 986k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 34	00:02	 5 554k	2 083k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 35	00:02	 5 871k	2 179k	-M7	1. ... Rd5 2.Ne7 Rd1+ 3.Bg1 f2 4.Ng6+ Kg5 5.h4+ Kxg6 6.h5+ Kg5 7.e7 fxg1Q+
 36	00:02	 6 305k	2 300k	-M7	1. ... f2 2.Bxf2 gxf2 3.Kh2 Rxg4 4.hxg4 f1Q 5.Ne7 Qf4+ 6.Kg1 Qd4+ 7.Kf1 Kxg4 8.Ke2 Qe5+ 9.Kd3 Qxe6
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Dann Corbit
Posts: 12799
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Sting SF 7.3

Post by Dann Corbit »

It may be a bug in Chest also, because Chest says dm 7:

6N1/6p1/1B2P3/6r1/6Pk/5ppP/6P1/7K b - - acn 43877; acs 0; bm Rd5; ce 32754; dm 7; pv Rd5 Ne7 Rd1+ Bg1 f2 Ng6+ Kg5 h4+ Kxg6 h5+ Kg5 h6 fxg1=Q#;
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Vinvin
Posts: 5301
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Sting SF 7.3

Post by Vinvin »

Dann Corbit wrote:It may be a bug in Chest also, because Chest says dm 7:

6N1/6p1/1B2P3/6r1/6Pk/5ppP/6P1/7K b - - acn 43877; acs 0; bm Rd5; ce 32754; dm 7; pv Rd5 Ne7 Rd1+ Bg1 f2 Ng6+ Kg5 h4+ Kxg6 h5+ Kg5 h6 fxg1=Q#;
"1...Rd5 mate in 7" is correct.
But Sting last line displayed is the incorrect "1...f2 mate in 7".
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Vinvin
Posts: 5301
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Sting SF 7.3

Post by Vinvin »

Sting SF 7.3 crashes on this study mate in 8 (regular SF has no troubles here and finds the mate in 1m35s on 6 cores) :

[d]brkrqbqn/qnpNqqbr/bnNqRbrn/qNrrnRrb/BrqnbqRr/bqRNnprR/QQbNNrNn/bqrnRbKb w - - 0 1

Code: Select all

Stockfish_161225_x64_modern_fast:
 1/1	00:00	 17k	3 483k	+115,06	1.Nbxa7+ Kxd7 2.Rxe7+ B8xe7 3.Nexf4
 2/4	00:00	 58k	3 211k	+124,86	1.Nbxa7+ Kxd7 2.Rxe7+ B8xe7 3.Nxb8+ Ke6 4.Nexf4+ Kxf5 5.Bxe8 Qgxe8
 3/6	00:00	 66k	3 316k	+124,08	1.Nbxa7+ Kxd7 2.Rxe7+ Qfxe7 3.Ncxe5+ Ke6 4.Ndxf4+ Kxf5 5.Nexc4
 4/8	00:00	 188k	3 541k	+122,20	1.Nbxa7+ Kxd7 2.Rxe7+ B6xe7 3.Ncxe5+ Ke6 4.Ndxf4+ Kxf5 5.Qaxb3
 5/9	00:00	 260k	3 509k	+121,54	1.Nbxa7+ Kxd7 2.Rxe7+ B6xe7 3.Nxb8+ Ke6 4.Nexf4+ Kxf5
 6/12	00:00	 3 054k	4 458k	+121,24	1.Nbxa7+ Kxd7 2.Rxe7+ Qdxe7 3.Ncxe5+ Kd6 4.Ndxc4+ Nbxc4 5.Nxf7+ N8xf7
 7/13	00:01	 6 400k	4 751k	+121,03	1.Nbxa7+ Kxd7 2.Rxe7+ Qdxe7 3.Ncxe5+ Ke6 4.Ndxf4+ Kxf5 5.Nxg3+ Kxe5 6.Nxe3 Qcxc3
 8/17-	00:34	 201 890k	5 933k	+120,96	1.Nbxa7+ Kxd7
 8/19-	00:43	 262 042k	6 047k	+120,89	1.Nbxa7+ Kxd7
 8/21-	01:08	 413 628k	6 065k	+120,34	1.Nbxa7+ Kxd7
 8/21+	01:35	 587 509k	6 121k	+M8	1.Nbxa7+
 8/21	01:35	 587 511k	6 121k	+M8	1.Nbxa7+ Kxd7 2.Nxb8+ Kxe6 3.Ndxf4+ Kxf5 4.Nxg3+ Kxg4 5.Rxh4+ Kxg3 6.Nxe4+ Bxe4 7.Qxf2+ Nxf2
 9/21	01:35	 587 532k	6 120k	+M8	1.Nbxa7+ Kxd7 2.Nxb8+ Kxe6 3.Ndxf4+ Kxf5 4.Nxg3+ Kxg4 5.Rxh4+ Kxg3 6.Nxe4+ Bxe4 7.Qxf2+ Nxf2 8.Qxf2+
 10/21	01:41	 616 654k	6 091k	+M8	1.Nbxa7+ Kxd7 2.Nxb8+ Kxe6 3.Ndxf4+ Kxf5 4.Nxg3+ Kxg4 5.Rxh4+ Kxg3 6.Nxe4+ Bxe4 7.Qxf2+ Nxf2 8.Qxf2+
 11/21	01:46	 643 438k	6 064k	+M8	1.Nbxa7+ Kxd7 2.Nxb8+ Kxe6 3.Ndxf4+ Kxf5 4.Nxg3+ Kxg4 5.Rxh4+ Kxg3 6.Nxe4+ Bxe4 7.Qxf2+ Nxf2 8.Qxf2+
 12/21	02:00	 722 482k	6 005k	+M8	1.Nbxa7+ Kxd7 2.Nxb8+ Kxe6 3.Ndxf4+ Kxf5 4.Nxg3+ Kxg4 5.Rxh4+ Kxg3 6.Nxe4+ Bxe4 7.Qxf2+ Nxf2 8.Qxf2+
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User avatar
velmarin
Posts: 1600
Joined: Mon Feb 21, 2011 9:48 am

Re: Sting SF 7.3

Post by velmarin »

Vinvin wrote: [d]brkrqbqn/qnpNqqbr/bnNqRbrn/qNrrnRrb/BrqnbqRr/bqRNnprR/QQbNNrNn/bqrnRbKb w - - 0 1
Chessbase says "there are no legal positions ..."
Where to put it ...
"I lack air to breathe"
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Guenther
Posts: 4718
Joined: Wed Oct 01, 2008 6:33 am
Location: Regensburg, Germany
Full name: Guenther Simon

Re: Sting SF 7.3

Post by Guenther »

Vinvin wrote:Sting SF 7.3 crashes on this study mate in 8

...

brkrqbqn/qnpNqqbr/bnNqRbrn/qNrrnRrb/BrqnbqRr/bqRNnprR/QQbNNrNn/bqrnRbKb w - - 0 1
The question is 'study' in what, because it is no possible chess position?
(Too much promotions for both sides, thus completely illegal - no clue how
that variant is called)
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Vinvin
Posts: 5301
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Sting SF 7.3

Post by Vinvin »

Guenther wrote:
Vinvin wrote:Sting SF 7.3 crashes on this study mate in 8

...

brkrqbqn/qnpNqqbr/bnNqRbrn/qNrrnRrb/BrqnbqRr/bqRNnprR/QQbNNrNn/bqrnRbKb w - - 0 1
The question is 'study' in what, because it is no possible chess position?
(Too much promotions for both sides, thus completely illegal - no clue how
that variant is called)
It's a study with a chessboard and with chess pieces :D
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User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Sting SF 7.3

Post by MikeB »

Gusev wrote:After 29...Qc5+, AsmFish finds the path to victory:
[pgn]
[Event "Computer chess game"]
[Site "Chelyabinsk RUS"]
[Date "1946.??.??"]
[Round "5"]
[White "AsmFish and Yuri S Gusev"]
[Black "E Auerbach and Sting SF 7.3"]
[Result "1-0"]
[BlackElo "2000"]
[ECO "B70"]
[Opening "Sicilian"]
[Time "21:10:56"]
[Variation "Dragon, 6.Be2 Bg7 7.O-O Nc6 8.Nb3"]
[WhiteElo "2000"]
[TimeControl "1800"]
[Termination "normal"]
[PlyCount "68"]
[WhiteType "program"]
[BlackType "program"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Nc6 7. Nb3 Bg7
8. O-O Be6 9. f4 Rc8 10. f5 Bd7 11. g4 Ne5 12. g5 Ng8 13. Nd5 f6 14. Be3 b6
15. Nd4 Kf7 16. c3 Qe8 17. Ne6 Bxe6 18. fxe6+ Kf8 19. Nxf6 Nxf6 20. gxf6
Bxf6 21. Bh6+ Kg8 22. Rxf6 exf6 23. Qxd6 Rc6 24. Qxe5 {(Qd6xe5 f6xe5 Ra1-f1
Qe8-e7 Be2-d1 Rc6-c4 Bd1-b3 b6-b5 Rf1-f3 g6-g5 Bb3xc4 b5xc4 b2-b3 Qe7-d8
Kg1-g2 c4xb3 a2xb3 a7-a5 Rf3-f5 Qd8-d2+ Rf5-f2 Qd2-d6 h2-h3 Qd6-e7 Rf2-f5
Qe7-d8 Rf5-f2 Qd8-e7) +2.42/31 55} fxe5 {(f6xe5 Ra1-f1 Rc6-c7 Be2-b5 Qe8-d8
Bb5-d7 Qd8-e7 Bd7-a4 Qe7-c5+ Kg1-g2 Rc7-g7 Ba4-b3 Qc5-e7 h2-h4 a7-a6 Bb3-d5
a6-a5 Kg2-g3 g6-g5 Rf1-f5 g5xh4+ Kg3-h3 b6-b5 b2-b3 Rg7-g3+ Kh3-h2 Rg3-g7
Kh2-h3) 0.00/48 101} 25. Rf1 {(Ra1-f1 Qe8-e7 Be2-d1 Rc6-c4 Bd1-b3 b6-b5
a2-a4 a7-a6 Kg1-g2 Qe7-e8 Rf1-f3 Qe8-e7 Bb3-a2 g6-g5 b2-b4 Qe7-g7 Bh6xg7
Kg8xg7 Ba2xc4 b5xc4 Rf3-f5 Rh8-e8 Rf5xg5+ Kg7-f6 Rg5-h5 Re8xe6 Rh5-h6+
Kf6-f7 Rh6xh7+ Kf7-g6 Rh7-d7 Kg6-g5 Kg2-g3 Re6-g6 Rd7-c7 Kg5-h5+ Kg3-f2
Rg6-f6+ Kf2-e3) +2.98/31 21} a6 {(a7-a6 Be2xa6 Qe8-e7 Ba6-b7 Rc6-d6 Bb7-d5
Rd6xd5 e4xd5 Qe7-c5+ Kg1-g2 Qc5xd5+ Kg2-g3 Qd5-d3+ Kg3-g2 Qd3-d5+) 0.00/52
54} 26. Bxa6 {(Be2xa6 Qe8-e7 Ba6-b7 Rc6-d6 Bb7-d5 Rd6xd5 e4xd5 Qe7-d6 b2-b4
Qd6-e7 Rf1-f3 e5-e4 Rf3-f1 b6-b5 Rf1-f4 e4-e3 Kg1-f1 Qe7-e8 d5-d6 Qe8-a8
Kf1-e1 g6-g5 Rf4-f7 Qa8-d8 Rf7-g7+ Kg8-f8 e6-e7+) +6.42/33 110} Qe7
{(Qe8-e7 Ba6-b7 Rc6-d6 Bb7-d5 Rd6xd5 e4xd5 Qe7-c5+ Kg1-g2 Qc5xd5+ Kg2-g3
Qd5-d3+ Kg3-g2 Qd3-d5+) 0.00/56 83} 27. Bb7 {(Ba6-b7 Rc6-d6 Bb7-d5 Rd6xd5
e4xd5 Qe7-d6 b2-b4 Qd6-e7 Rf1-f3 e5-e4 Rf3-f1 Qe7-d8 Rf1-f7 e4-e3 Kg1-f1
b6-b5 Kf1-e2 g6-g5 Ke2xe3 Qd8-e8 Rf7-f5 g5-g4 Rf5-g5+ Qe8-g6 d5-d6 Qg6xg5+
Bh6xg5 Kg8-g7 d6-d7 g4-g3 h2xg3 Rh8-a8 e6-e7) +9.97/36 51} Rd6 {(Rc6-d6
Bb7-d5 Rd6xd5 e4xd5 Qe7-c5+ Kg1-g2 Qc5xd5+ Kg2-g3 Qd5-d3+ Kg3-g2 Qd3-d5+)
0.00/62 284} 28. Bd5 {(Bb7-d5 Rd6xd5 e4xd5 Qe7-d6 Rf1-f2 Qd6-c5 b2-b4
Qc5-e7 Kg1-f1 e5-e4 Rf2-f4 e4-e3 Kf1-e1 Qe7-d8 Ke1-e2 Qd8-d6 Ke2xe3 Qd6-e5+
Ke3-f2 Qe5-d6 Kf2-g1 Qd6xf4 Bh6xf4 h7-h6 d5-d6 Kg8-f8 Bf4-e5 Rh8-h7 d6-d7
Rh7xd7 e6xd7 Kf8-e7 Be5-c7 Ke7xd7 Bc7xb6 Kd7-c8 a2-a4 Kc8-b7 Bb6-e3 Kb7-c6
b4-b5+ Kc6-c7 Kg1-f2 Kc7-d8 Be3-b6+ Kd8-d7 a4-a5 g6-g5 a5-a6) +10.94/35 23}
Rxd5 {(Rd6xd5 e4xd5 Qe7-c5+ Kg1-g2 Qc5xd5+ Kg2-g3 Qd5-d3+ Kg3-g2 Qd3-d5+)
0.00/65 83} 29. exd5 {(e4xd5 Qe7-d6 Rf1-f2 Qd6-e7 b2-b4 e5-e4 Rf2-f1 e4-e3
Rf1-f4 Qe7-d6 Kg1-f1 e3-e2+ Kf1-e1 Qd6xf4 Bh6xf4 h7-h6 d5-d6 Kg8-f8 Bf4-e5
Rh8-h7 d6-d7 Rh7xd7 e6xd7 Kf8-e7 Be5-c7 Ke7xd7 Bc7xb6 g6-g5 Bb6-e3 g5-g4
Be3xh6 Kd7-c6 a2-a4 Kc6-b6 a4-a5+ Kb6-b5 Ke1xe2 Kb5-a6 Bh6-e3 g4-g3 h2xg3
Ka6-b7 a5-a6+ Kb7xa6 g3-g4 Ka6-b5 g4-g5) +14.46/34 61} Qc5+ 30. Rf2
{(Rf1-f2 Qc5-e7 b2-b4 e5-e4 Rf2-f1 e4-e3 Rf1-f4 g6-g5 Rf4-f5 Qe7-g7 Rf5xg5
Qg7xg5+ Bh6xg5 Kg8-g7 d5-d6 e3-e2 Kg1-f2 e2-e1R Kf2xe1 Rh8-e8 Ke1-f2 Re8xe6
d6-d7 Re6-d6 d7-d8Q Rd6xd8 Bg5xd8 Kg7-f7 Bd8xb6 Kf7-e6 Bb6-e3 Ke6-d5 Kf2-e2
Kd5-c4 a2-a4 Kc4-b3 b4-b5 Kb3-a3 a4-a5 Ka3-b2 a5-a6 Kb2xc3 a6-a7 Kc3-b4
b5-b6 Kb4-c4 b6-b7 Kc4-d5) +26.01/37 56} Qe7 {(Qc5-e7 b2-b4 e5-e4 Rf2-f1
e4-e3 Rf1-f4 Qe7-d6 Kg1-f1 Qd6-e7 Kf1-e2 Qe7-d6 Ke2xe3 Qd6-e5+ Ke3-f2
Qe5xf4+ Bh6xf4 Kg8-f8 d5-d6 h7-h6 Bf4-e5 Rh8-h7 d6-d7 Kf8-e7) -18.74/31 78}
31. b4 {(b2-b4 e5-e4 Rf2-f1 e4-e3 Rf1-f4 Qe7-d6 Kg1-f1 Qd6xf4+ Bh6xf4
Kg8-f8 d5-d6 h7-h6 Bf4xe3 g6-g5 Be3xb6 g5-g4 d6-d7 Kf8-e7 d7-d8Q+ Rh8xd8
Bb6xd8+ Ke7xe6 a2-a4 Ke6-d7 Bd8-b6 Kd7-c6 Bb6-f2 Kc6-d5 Kf1-e2 Kd5-c4
Bf2-d4 h6-h5 b4-b5 Kc4-b3 b5-b6 h5-h4 b6-b7 Kb3-a2 b7-b8Q g4-g3 h2xg3 h4-h3
Qb8-g8+ Ka2-a3 Qg8-h7 h3-h2 Qh7xh2 Ka3xa4 Qh2-h7) +54.27/46 32} e4 {(e5-e4
Rf2-f1 e4-e3 Rf1-f4 Qe7-d6 Kg1-f1 Qd6xf4+ Bh6xf4 Kg8-f8 d5-d6 h7-h6 Bf4-e5
Rh8-h7 d6-d7 e3-e2+ Kf1xe2 Kf8-e7 Be5-d4 g6-g5 Bd4xb6 Rh7-h8 d7-d8Q+ Rh8xd8
Bb6xd8+ Ke7xe6) -23.43/35 393} 32. Rf1 {(Rf2-f1 e4-e3 Rf1-f4 Qe7-d6 Kg1-f1
Qd6-e7 Kf1-e2 Qe7-d6 Ke2xe3 b6-b5 Ke3-e2 g6-g5 Rf4-f2 g5-g4 Rf2-f4 Qd6-e5+
Ke2-f1 Qe5xf4+ Bh6xf4 Kg8-f8 d5-d6 Rh8-g8 Bf4-g3 Kf8-e8 Bg3-h4 Rg8-g7
Kf1-e2 Rg7-d7 e6xd7+ Ke8xd7 Bh4-g3 h7-h6 Ke2-e3 Kd7-c6 Ke3-d3 h6-h5 Bg3-h4
g4-g3 Bh4xg3 h5-h4 Bg3xh4 Kc6-d7 Bh4-g5 Kd7-e6 d6-d7 Ke6-e5 d7-d8Q Ke5-f5
Qd8-d7+ Kf5xg5) +58.79/47 34} e3 {(e4-e3 Rf1-f4 Qe7-d6 Kg1-f1 Qd6-e7 Kf1-e2
Qe7-d6 Ke2xe3 Qd6-e5+ Ke3-f2 Qe5-g7 Bh6xg7 Kg8xg7 e6-e7 Rh8-a8 d5-d6
Ra8xa2+ Kf2-e3 Ra2-a1 d6-d7 Ra1-e1+ Ke3-d2 Re1xe7 d7-d8Q Re7-f7 Qd8-d4+
Kg7-f8 Rf4xf7+ Kf8xf7 Qd4xb6 Kf7-e7 Qb6-c7+ Ke7-f8 b4-b5) -23.63/32 30} 33.
Rf4 {(Rf1-f4 Qe7-e8 Kg1-f1 Qe8-e7 Kf1-e2 Qe7-d8 Ke2xe3 Qd8-d6 Ke3-e2
Qd6-e5+ Ke2-f1 Qe5xf4+ Bh6xf4 Kg8-f8 d5-d6 h7-h6 Bf4-e3 g6-g5 Be3-d4 Rh8-g8
Bd4xb6 g5-g4 d6-d7 Kf8-e7 d7-d8Q+ Rg8xd8 Bb6xd8+ Ke7xe6 a2-a4 Ke6-d7 Bd8-h4
Kd7-c7 Bh4-f2 Kc7-b8 Kf1-e2 Kb8-c8 a4-a5 Kc8-d7 a5-a6 Kd7-c7 Bf2-e3 Kc7-c6
Be3-d4 h6-h5 Bd4-f2 h5-h4 Bf2xh4 Kc6-b6 b4-b5 g4-g3) +58.91/47 35} Qd8
{(Qe7-d8 Kg1-f1 Qd8-e7 Kf1-e2 Qe7-d6 Ke2xe3 Qd6-e5+ Ke3-f2 Qe5-g7 Bh6xg7
Kg8xg7 e6-e7 Rh8-a8 d5-d6 Ra8xa2+ Kf2-e3 Ra2-a1 d6-d7 Ra1-e1+ Ke3-d2 Re1xe7
d7-d8Q Re7-f7 Qd8-d4+ Kg7-f8 Rf4xf7+ Kf8xf7 Qd4xb6 Kf7-e7 Qb6-c7+ Ke7-f8
b4-b5) -23.63/35 26} 34. Kf1 {(Kg1-f1 Qd8-e7 Kf1-e2 Qe7-d6 Ke2xe3 Qd6-e5+
Ke3-f2 Qe5xf4+ Bh6xf4 h7-h6 Bf4-e5 Rh8-h7 d5-d6 Kg8-f8 d6-d7 Rh7xd7 e6xd7
Kf8-e7 Be5-c7 Ke7xd7 Bc7xb6 Kd7-c6 Bb6-e3 Kc6-b5 Be3xh6 Kb5-a4 Kf2-e3
Ka4-b5 Ke3-d3 Kb5-c6 a2-a4 Kc6-d5 Kd3-e2 Kd5-c4 Bh6-e3 Kc4-d5 b4-b5 Kd5-e6
a4-a5 Ke6-d7 a5-a6 Kd7-c7 Ke2-d3 g6-g5 Be3xg5 Kc7-b6 Kd3-e2 Kb6-c7 Bg5-f4+
Kc7-d7 a6-a7 Kd7-e6 a7-a8Q Ke6-f5) +59.84/52 104} Qe7 {(Qd8-e7 Kf1-g1)
-21.87/34 234 Black resigns} 1-0
[/pgn]
interesting game - did you consider 17. Qb3?

Edit: removed question about 26. Rc7 - using Sting I see it.
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Vinvin
Posts: 5301
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Sting SF 7.3

Post by Vinvin »

One more hard even for Sting-SF from http://rybkaforum.net/cgi-bin/rybkaforu ... ?tid=31925

Mate in 24 :
[d]B7/8/8/3N4/2pp2pp/1pP3pr/1P2P1p1/1Q2KNrk w - - 0 1
1. Ne3 dxe3 2. Qf5 Rh2 3. Kd1 Rh3 4. Kc1 Rh2 5. Kb1 Rh3 6. Ka1 Rh2 7. Qb1 Rh3 8. Qe1 Rh2 9. Kb1 Rh3 10. Kc1 Rh2 11. Kd1 Rh3 12. Nxe3 ...

[pgn]
[Event "-"]
[Site "-"]
[Date "-"]
[White "Composer : Joachim Iglesias"]
[Black "-"]
[Result "*"]
[SetUp "1"]
[FEN "B7/8/8/3N4/2pp2pp/1pP3pr/1P2P1p1/1Q2KNrk w - - 0 1"]

1. Ne3 dxe3 2. Qf5 Rh2 3. Kd1 Rh3 4. Kc1 Rh2 5. Kb1 Rh3 6. Ka1 Rh2 7. Qb1
Rh3 8. Qe1 Rh2 9. Kb1 Rh3 10. Kc1 Rh2 11. Kd1 Rh3 12. Nxe3 *
[/pgn]
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