Test your engine - mate in 8, problem by M.R. Vukcevic 1971

[Slobodan R. Stojanovic]

Geschrieben von:/Posted by: Slobodan R. Stojanovic at 21 June 2004 01:15:28:

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1

[Reinhard Scharnagl]

Geschrieben von:/Posted by: Reinhard Scharnagl at 21. June 2004 18:15:
Als Antwort auf:/In reply to: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: Slobodan R. Stojanovic at 21 June 2004 01:15:28:

M.R. Vukcevic 1971
mate in 8, problem

abcdefgh8877665544332211abcdefgh(11/14)   SMIRF FullChess FEN-Editor (© by R. Scharnagl) Ver. 1.4.2

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1
SmirfMateBeta does not find that mate in 8. Are you sure about the depth?
Regards, Reinhard.



FRC ChessBox

[Fabien Letouzey]

Geschrieben von:/Posted by: Fabien Letouzey at 21 June 2004 18:57:12:
Als Antwort auf:/In reply to: Re: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: Reinhard Scharnagl at 21. June 2004 18:15:

SmirfMateBeta does not find that mate in 8. Are you sure about the depth?
Regards, Reinhard.

Fruit says 8.
Fabien.

[F.Huber]

Geschrieben von:/Posted by: F.Huber at 21. June 2004 19:15:
Als Antwort auf:/In reply to: Re: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: Reinhard Scharnagl at 21. June 2004 18:15:

M.R. Vukcevic 1971
mate in 8, problem

abcdefgh8877665544332211abcdefgh(11/14)   SMIRF FullChess FEN-Editor (© by R. Scharnagl) Ver. 1.4.2

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1
SmirfMateBeta does not find that mate in 8. Are you sure about the depth?
Regards, Reinhard.

Hi Reinhard,
it´s indeed #8:
ChestUCI Ver.3.7 UCI1:
CPU: Celeron 400MHz
FEN: 7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - -
Suche nach Spezial-Matt [C0/K1/P10/X32] in 8 ... (Hash=64MB)
8 00:59 M8 1.Ld3
Suche abgeschlossen ... (Zeit=92.06s)
Matt in 8 gefunden ! (1 Lösung in 01:32)
8 01:32 M8 1.Ld3 Texd3 2.Th5 Le5 3.Txe5 Te3 4.Scd3 Tdxd3 5.Tf5 Td4 6.Lxd4 Sd3 7.Lxc3+ Sb4 8.axb4+

2 other interesting results with FlightSquares=0 and ThreatDepth=2:
PopeyeUCI 01:19
Gustav 00:08
Best regards,
Franz.

[Lance Perkins]

Geschrieben von:/Posted by: Lance Perkins at 21 June 2004 19:17:51:
Als Antwort auf:/In reply to: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: Slobodan R. Stojanovic at 21 June 2004 01:15:28:

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1

Thinker found the best move in just a few seconds, but it took 9 hours(!!!) to find the mate sequence.
Thinker: 5.0a (E 60, 51e) Copyright (c) Lance Perkins
Thinker: Freeware. No warranties whatsoever.
Thinker: n-o q-t o-t s-f-c npd
post
setboard 7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1
analyze
7 -969 389 3287072 c1d3 e3d3 f2d3 d2d3 c2d3 f4e5 h1f1 e1d3 h8e5 d3e5
8 -1035 570 4834497 c1d3 e3d3 f2d3 d2d3 c2d3 f4e5 h1f1 e1d3 h8e5 d3e5
9 -866 1870 16403219 c1d3 e3d3 c2d3 f4e5 h8e5 d2d3 f2d3 f1f7 b7b8 e1d3 e5c3 a5b6 c4d5
10 -565 6861 61341556 c1d3 e3d3 c2d3 d2d3 f2d3 f4d2 d3e5 f1f7 e5f7 e1d3 h8c3 d2c3 b7c7 b3b2 b6b7 b2b1Q c4d5 e2e1Q h1e1 d3e1 b7b8Q b1b8 c7b8 e1g2
11 -365 23064 211436162 c1d3 e3d3 c2d3 d2d3 f2d3 f4d2 d3e5 f1f7 e5f7 e1c2 c4d5 e2e1Q h8c3 d2c3 h1e1 c2e1
13 15 278675 2932081302 c1d3 e3d3 c2d3 d2d3 f2d3 f4d2 d3e5 f1f7 e5f7 e1d3 f7d8 d3c5 b7a7 d5c4 h1h5 a5b5 b6b7 d2f4 h8c3
13 13895 3321428 3730044936 c2d3 e3d3 h1h5 f4e5 h5e5 d3h3 g2h3 f1h3 f2h3 e1c2 e5d5 d2d5 h8c3 c2b4 c3b4

[David Dahlem]

Geschrieben von:/Posted by: David Dahlem at 21 June 2004 22:20:41:
Als Antwort auf:/In reply to: Re: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: F.Huber at 21. June 2004 19:15:

2 other interesting results with FlightSquares=0 and ThreatDepth=2:
PopeyeUCI 01:19
Gustav 00:08
Best regards,
Franz.

Hi Franz
What is PopeyeUCI?
Regards
Dave

[Slobodan R. Stojanovic]

Geschrieben von:/Posted by: Slobodan R. Stojanovic at 21 June 2004 22:41:33:
Als Antwort auf:/In reply to: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: Slobodan R. Stojanovic at 21 June 2004 01:15:28:

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1

Congratulations to Franz Huber and Lance Perkins.
The original solution is:
1.Bd3 Rexd3 2.Rh5 Be5 3.Rxe5 Re3 4.Ncd3 Rdxd3 5.Rf5
(Chest-uci has found the same line, from now on is a little different)
5...Rd2 6.Nd3 Rexd3 7.Rxd5+ Rxd5 8.Bxc3#
Regards. SL.

[F.Huber]

Geschrieben von:/Posted by: F.Huber at 21. June 2004 22:42:
Als Antwort auf:/In reply to: Re: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: David Dahlem at 21 June 2004 22:20:41:

2 other interesting results with FlightSquares=0 and ThreatDepth=2:
PopeyeUCI 01:19
Gustav 00:08
Best regards,
Franz.

Hi Franz
What is PopeyeUCI?
Regards
Dave

Hello Dave,
PopeyeUCI is my current project - it´s an UCI version of the mate solver
Popeye, which is also a very good program.
I´ve started with it two days ago (on Saturday), and PopeyeUCI is already
running here on my notebook (almost) perfectly.
So it may not take a long time until it´s ready for release ...
Best regards,
Franz.

[Slobodan R. Stojanovic]

Geschrieben von:/Posted by: Slobodan R. Stojanovic at 21 June 2004 22:45:25:
Als Antwort auf:/In reply to: Re: Test your engine - mate in 8, problem by M.R. Vukcevic 1971 geschrieben von:/posted by: Fabien Letouzey at 21 June 2004 18:57:12:

SmirfMateBeta does not find that mate in 8. Are you sure about the depth?
Regards, Reinhard.

Fruit says 8.
Fabien.

There was no solution, only a mating numer of moves.
Regards. SL.

[Djordje Vidanovic]

Geschrieben von:/Posted by: Djordje Vidanovic at 22. June 2004 14:32:
Als Antwort auf:/In reply to: Congratulations to Franz Huber and Lance Perkins geschrieben von:/posted by: Slobodan R. Stojanovic at 21 June 2004 22:41:33:

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1

Congratulations to Franz Huber and Lance Perkins.
The original solution is:
1.Bd3 Rexd3 2.Rh5 Be5 3.Rxe5 Re3 4.Ncd3 Rdxd3 5.Rf5
(Chest-uci has found the same line, from now on is a little different)
5...Rd2 6.Nd3 Rexd3 7.Rxd5+ Rxd5 8.Bxc3#
Regards. SL.

The King finds mate in 8 in 4 seconds on a Xeon 2.4 Ghz. Analysis:
King 3.23:
3 00:00 3.322 166.100 -16.83 Nf2xd1 e2xd1Q Rh1xf1 Qd1xc1 Rf1xf4 Qc1xc2 e4xd5
3 00:00 8.220 137.000 -12.75 Bc2d3 Rd2c2 Rh1h5 Re3xd3 Nc1xd3
3 00:00 12.455 124.550 -11.86 Nc1d3 Re3xd3 Bc2xd3 Bf4e5 Bh8xe5 Rd2xd3
4 00:00 38.351 142.040 -8.30 Nc1d3 Re3xd3 Nf2xd3 Bf4e5 Nd3xe5 d5xc4 Ne5xc4+ Ka5b5
5 00:00 70.467 143.810 -8.80 Nc1d3 Re3xd3 Nf2xd3 Rd2xd3 Bc2xd3 Bf4e5 Rh1xf1 e2xf1Q Bd3xf1 Be5xh8 c4xd5
6 00:01 135.015 151.702 -7.06 Nc1d3 Re3xd3 Bc2xd3 Bf4e5 Bh8xe5 Rd2xd3 Be5d6 Ne1c2 Nf2xd3
7 00:02 406.645 164.633 -0.67 Nc1d3 Re3xd3 Bc2xd3 Rd2xd3 Nf2xd3 Bf4d2 Nd3e5 Qf1f7+ Ne5xf7 Ne1d3 Nf7d8 Nd3b4 a3xb4+ Ka5xb4
8 00:03 654.640 175.037 +0.91 Nc1d3 Re3xd3 Bc2xd3 Rd2xd3 Nf2xd3 Bf4d2 Nd3e5 Qf1f7+ Ne5xf7 Ne1d3 Nf7d8 Nd3c5+ Kb7a7 d5xc4 Nd8c6+ Ka5b5 Nc6d4+ Kb5a5 Rh1h5 Bd2g5 Rh5xg5
8 00:04 783.991 181.900 +99.85 Bc2d3 Rd2xd3 Rh1h5 Bf4e5 Bh8xe5 Rd3d2 Nc1d3 Re3xd3 Be5f6 Rd3h3 Nf2d3 Ne1xd3 Rh5xd5+ Nd3c5+ Rd5xc5+
9 00:04 902.921 192.110 +99.85 Bc2d3 Rd2xd3 Rh1h5 Bf4e5 Bh8xe5 Rd3d2 Nc1d3 Re3xd3 Be5f6 Rd3h3 Nf2d3 Ne1xd3 Rh5xd5+ Nd3c5+ Rd5xc5+
10 00:06 1.259.920 211.751 +99.85 Bc2d3 Rd2xd3 Rh1h5 Bf4e5 Bh8xe5 Rd3d2 Nc1d3 Re3xd3 Be5f6 Rd3h3 Nf2d3 Ne1xd3 Rh5xd5+ Nd3c5+ Rd5xc5+
11 00:08 1.973.920 235.270 +99.85 Bc2d3 Rd2xd3 Rh1h5 Bf4e5 Bh8xe5 Rd3d2 Nc1d3 Re3xd3 Be5f6 Rd3h3 Nf2d3 Ne1xd3 Rh5xd5+ Nd3c5+ Rd5xc5+
12 00:14 3.815.479 263.136 +99.85 Bc2d3 Rd2xd3 Rh1h5 Bf4e5 Bh8xe5 Rd3d2 Nc1d3 Re3xd3 Be5f6 Rd3h3 Nf2d3 Ne1xd3 Rh5xd5+ Nd3c5+ Rd5xc5+

Regards,
Djordje

[Slobodan R. Stojanovic]

Geschrieben von:/Posted by: Slobodan R. Stojanovic at 22 June 2004 21:10:26:
Als Antwort auf:/In reply to: Re: Congratulations to Franz Huber and Lance Perkins geschrieben von:/posted by: Djordje Vidanovic at 22. June 2004 14:32:

7B/1K6/pP6/k2p4/p1P1Pbp1/Ppp1r3/2BrpNP1/2Nbnq1R w - - 0 1

Congratulations to Franz Huber and Lance Perkins.
The original solution is:
1.Bd3 Rexd3 2.Rh5 Be5 3.Rxe5 Re3 4.Ncd3 Rdxd3 5.Rf5
(Chest-uci has found the same line, from now on is a little different)
5...Rd2 6.Nd3 Rexd3 7.Rxd5+ Rxd5 8.Bxc3#
Regards. SL.

The King finds mate in 8 in 4 seconds on a Xeon 2.4 Ghz. Analysis:
King 3.23:
8 00:04 783.991 181.900 +99.85 Bc2d3 Rd2xd3 Rh1h5 Bf4e5 Bh8xe5 Rd3d2 Nc1d3 Re3xd3 Be5f6 Rd3h3 Nf2d3 Ne1xd3 Rh5xd5+ Nd3c5+ Rd5xc5+

Regards,
Djordje

Well, I have to congratulate again. And this congratulations will be doubled:
For The King and for the Xeon 2.4 Ghz.
Interesting is that all three engines that solved the problem had found three diferente solutions.
Regards. SL.