Erdo - Rybka Cluster 1/2-1/2

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

Moderator: Ras

User avatar
AdminX
Posts: 6363
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Erdo - Rybka Cluster 1/2-1/2

Post by AdminX »

Over on the Rybka forum they were chating about this game. Here is what I get from Zappa Mexico.

[d]3r4/3k4/8/1N4p1/8/3r4/1B4K1/5R2 b - - 0 1

Analysis by Zappa Mexico II:

1...Rd2+ 2.Kg3 Rxb2 3.Rd1+ Ke6 4.Nd4+ Kf6 5.Rf1+ Kg6 6.Ra1 Ra8 7.Rc1 Ra3+ 8.Nf3 Rg2+ 9.Kh3 g4+ 10.Kh4 gxf3 11.Rc6+ Kf5 12.Rc5+ Kf4 13.Rc4+ Ke3 14.Rb4 Ra1 15.Rb3+
-+ (-3.34) Depth: 9/23 00:00:01 489kN, tb=79
-+ (-13.75) Depth: 17/53 00:01:56 360mN, tb=214710

And then the Eval Changed!

Analysis by Zappa Mexico II:

1...Rd2+ 2.Rf2 Rxb2 3.Nc3 Rh8 4.Ne4 Rh2+ 5.Kf3 Re2 6.Nc5+ Ke7 7.Rg2 Rhxg2 8.Na4 Rgf2+ 9.Kg3 Ke6 10.Nc3 Kf5 11.Nxe2
-+ (-3.34) Depth: 9/23 00:00:01 489kN, tb=79
-+ (-#18) Depth: 22/63 00:16:55 3350mN, tb=2945291

Image

Here is the complete PGN

[Event "Friendly Game, 90m + 30s"]
[Site "Engine Room"]
[Date "2009.06.21"]
[Round "?"]
[White "Erdo, Centaur"]
[Black "Rechenschieber, Rybka 3g55 cluster "]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2519"]
[Annotator "0.00;-0.04"]
[PlyCount "110"]
[EventDate "2009.06.21"]
[TimeControl "5400+30"]

{2048 MB} 1. e4 {[%emt 0:00:03]} c5 {[%eval -5,1] [%emt 0:00:00]} 2. c4 {[%emt
0:00:04]} Nc6 {[%eval -5,1] [%emt 0:00:00]} 3. Nc3 {[%emt 0:00:02]} Nf6 {
[%eval -5,1] [%emt 0:00:00]} 4. h3 {[%emt 0:00:01]} e5 {[%eval -4,23] [%emt 0:
06:53]} 5. g3 {[%emt 0:00:12]} Rb8 {[%eval -23,23] [%emt 0:05:33]} 6. Bg2 {
[%emt 0:00:13]} h6 {[%eval -22,22] [%emt 0:05:49]} 7. d3 {[%emt 0:00:36]} Be7 {
[%eval -19,22] [%emt 0:04:26]} 8. Nge2 {[%emt 0:03:36]} O-O {[%eval -19,22]
[%emt 0:04:39]} 9. O-O {[%emt 0:08:50]} d6 {[%eval -19,21] [%emt 0:04:24]} 10.
f4 {[%emt 0:00:43]} a6 {[%eval -17,20] [%emt 0:03:55]} 11. a4 {[%emt 0:00:19]}
Bd7 {[%eval -17,20] [%emt 0:04:11]} 12. f5 {[%emt 0:00:41]} Re8 {[%eval -23,21]
[%emt 0:04:34]} 13. g4 {[%emt 0:02:47]} Nd4 {[%eval -36,21] [%emt 0:05:03]} 14.
Nxd4 {[%emt 0:04:53]} exd4 {[%eval -46,21] [%emt 0:03:26]} 15. Ne2 {[%emt 0:00:
15]} Bc6 {[%eval -56,22] [%emt 0:04:34]} 16. Ng3 {[%emt 0:24:51]} Nd7 {[%eval
-65,19] [%emt 0:02:26]} 17. Nh5 {[%emt 0:01:03]} b5 {[%eval -58,19] [%emt 0:02:
10]} 18. cxb5 {[%emt 0:01:39]} axb5 {[%eval -57,19] [%emt 0:00:00]} 19. a5 {
[%emt 0:00:02]} b4 {[%eval -65,19] [%emt 0:02:10]} 20. f6 {[%emt 0:13:52]} Nxf6
{[%eval -88,18] [%emt 0:00:56]} 21. e5 {[%emt 0:00:22]} Bxg2 {[%eval -88,18]
[%emt 0:00:16]} 22. exf6 {[%emt 0:00:06]} Bxf1 {[%eval -69,18] [%emt 0:00:38]}
23. fxe7 {[%emt 0:00:15]} Qxe7 {[%eval -83,19] [%emt 0:02:21]} 24. Qxf1 {[%emt
0:00:33]} Ra8 {[%eval -75,20] [%emt 0:02:41]} 25. Bf4 {[%emt 0:03:18]} d5 {
[%eval -93,20] [%emt 0:02:47]} 26. a6 {[%emt 0:09:36]} Ra7 {[%eval -115,19]
[%emt 0:01:15]} 27. Qg2 {[%emt 0:01:46]} Qe6 {[%eval -136,20] [%emt 0:00:18]}
28. g5 {[%emt 0:01:28]} hxg5 {[%eval -141,21] [%emt 0:00:00]} 29. Bxg5 {[%emt
0:01:52]} Qe2 {[%eval -134,21] [%emt 0:02:22]} 30. Nf4 {[%emt 0:00:06]} Qxg2+ {
[%eval -150,21] [%emt 0:00:32]} 31. Kxg2 {[%emt 0:00:05]} f6 {[%eval -150,22]
[%emt 0:00:42]} 32. Bh4 {[%emt 0:00:04]} Rea8 {[%eval -148,23] [%emt 0:00:43]}
33. Bf2 {[%emt 0:06:14]} Rxa6 {[%eval -149,26] [%emt 0:00:00]} 34. Rc1 {[%emt
0:00:19]} Ra2 {[%eval -149,25] [%emt 0:00:37]} 35. Rxc5 {[%emt 0:00:16]} Rxb2 {
[%eval -154,25] [%emt 0:00:13]} 36. Kf3 {[%emt 0:00:11]} Rb8 {[%eval -148,24]
[%emt 0:00:29]} 37. Rc1 {[%emt 0:00:43]} b3 {[%eval -148,25] [%emt 0:01:39]}
38. Bxd4 {[%emt 0:00:07]} Rc2 {[%eval -148,25] [%emt 0:02:09]} 39. Rb1 {[%emt
0:00:04]} b2 {[%eval -151,25] [%emt 0:02:08]} 40. Ke3 {[%emt 0:00:29]} Kf7 {
[%eval -202,24] [%emt 0:02:35]} 41. h4 {[%emt 0:00:21]} g6 {[%eval -238,22]
[%emt 0:00:02]} 42. Nh3 {[%emt 0:05:20]} Rh2 {[%eval -270,26] [%emt 0:00:50]}
43. Nf4 {[%emt 0:00:31]} g5 {[%eval -271,22] [%emt 0:00:00]} 44. hxg5 {[%emt 0:
00:24]} fxg5 {[%eval -275,22] [%emt 0:00:03]} 45. Nxd5 {[%emt 0:00:11]} Re8+ {
[%eval -275,22] [%emt 0:00:07]} 46. Kf3 {[%emt 0:00:24]} Rh3+ {[%eval -280,22]
[%emt 0:00:00]} 47. Kf2 {[%emt 0:00:12]} Rd8 {[%eval -279,23] [%emt 0:00:11]}
48. Kg2 {[%emt 0:00:13]} Rxd3 {[%eval -278,26] [%emt 0:00:05]} 49. Rf1+ {[%emt
0:00:25]} Ke6 {[%eval -276,24] [%emt 0:00:00]} 50. Nc7+ {[%emt 0:00:37]} Kd6 {
[%eval -292,24] [%emt 0:00:00]} 51. Nb5+ {[%emt 0:01:29]} Kd7 {[%eval -283,25]
[%emt 0:00:05]} 52. Bxb2 {[%emt 0:00:14]} Rd2+ {[%eval -324,23] [%emt 0:00:56]}
53. Kg3 {[%emt 0:00:34]} Rxb2 {[%eval -324,22] [%emt 0:00:09]} 54. Rd1+ {[%emt
0:01:04]} Ke7 {[%eval -328,30] [%emt 0:00:57]} 55. Rxd8 {[%emt 0:00:41]} Kxd8 {
[%eval 0,59] [%emt 0:00:19] Rechenschieber,Rybka 3g55 cluster A offers a draw}
1/2-1/2
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
Top
User avatar
M ANSARI
Posts: 3726
Joined: Thu Mar 16, 2006 7:10 pm

Re: Erdo - Rybka Cluster 1/2-1/2

Post by M ANSARI »

Well if Zappa is correct then it looks like Rybka's EGTB probing code and hash tabulation is still not fixed. A lof of it has to do with Nalimov's difficult cryptic code, but somehow some engines have been able to utilize it successfully.
Top
User avatar
AdminX
Posts: 6363
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: Erdo - Rybka Cluster 1/2-1/2

Post by AdminX »

M ANSARI wrote:Well if Zappa is correct then it looks like Rybka's EGTB probing code and hash tabulation is still not fixed. A lof of it has to do with Nalimov's difficult cryptic code, but somehow some engines have been able to utilize it successfully.
Maybe, thats sounds correct to me. I just woke up and now Zappa is showing a mate in 16. So I updated the screenshot.
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
Top
kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Erdo - Rybka Cluster 1/2-1/2

Post by kgburcham »

Ted if I play your 1...Rd2 2.Rf2 then I get mate

[d] 3r4/3k4/8/1N4p1/8/3r4/1B4K1/5R2 b - - 0 1

Zappa Mexico II:

1...Rb8 2.Rf7+ Ke6 3.Rf6+ Ke7 4.Rf5 Rd2+ 5.Kg3 Rxb2 6.Nd4 Rg8 7.Nc6+ Kd7 8.Nd4 Rb1 9.Rf6
-+ (-3.18) Depth: 10/31 00:00:01 1171kN, tb=770
1...Rb8 2.Rf7+ Ke6 3.Rf6+ Ke7 4.Rf5 Rd2+ 5.Kg3 Rxb2 6.Nd4 Rg8 7.Nc6+ Kd7 8.Nd4 Rb1 9.Rf7+ Kd6 10.Rf5
-+ (-3.16) Depth: 11/32 00:00:01 1910kN, tb=1266
1...Rb8 2.Rf7+ Ke6 3.Rf6+ Ke7 4.Rf5 Rd2+ 5.Kg3 Rxb2 6.Nd4 Rg8 7.Nc6+ Kd7 8.Nd4 Rb1 9.Rf7+ Kd6 10.Rf5
-+ (-3.16) Depth: 12/32 00:00:01 2995kN, tb=1896
1...Rb8 2.Rf7+ Ke6 3.Rf6+ Ke7 4.Rf5 Rd2+ 5.Kg3 Rxb2 6.Nd4 Rg8 7.Nc6+ Kd7 8.Nd4 Rb1 9.Rf6 Rg1+ 10.Kf2 Rd1 11.Nf5
-+ (-3.33) Depth: 13/35 00:00:02 7645kN, tb=5487
1...Rb8 2.Rf7+ Ke6 3.Rf6+ Ke7 4.Rf5 Rd2+ 5.Kg3 Rxb2 6.Nd4 Rg8 7.Nc6+ Kd6 8.Rf6+ Kd7 9.Nd4 g4 10.Rf5 Kd6 11.Nb5+ Kd7 12.Nd4
-+ (-3.34) Depth: 14/40 00:00:04 15215kN, tb=12176
1...Rb8 2.Rf7+ Ke6 3.Rf6+ Ke7 4.Rf5 Rd2+ 5.Kg3 Rxb2 6.Nd4 Rg8 7.Nc6+ Kd6 8.Rf6+ Kd7 9.Nd4 g4 10.Rf5 Kd6 11.Nb5+ Kd7 12.Nd4
-+ (-3.34) Depth: 15/40 00:00:05 16934kN, tb=13587
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kf7 10.Kg5 Rb6 11.Rf5+ Kg7 12.Rd5 Rg6+
-+ (-3.41) Depth: 15/43 00:00:12 47649kN, tb=45962
1...Rb8 2.Rf7+ Ke8 3.Rf3 Rd2+ 4.Kh3 Rxb5 5.Bf6 Rdd5 6.Bc3 Rd1 7.Kg3 Rc5 8.Bf6 Rc4 9.Be5 Re4 10.Rf6 Rxe5
-+ (-3.51) Depth: 16/44 00:00:20 85550kN, tb=88352
1...Rb8 2.Rf7+ Ke8 3.Rf3 Rd2+ 4.Kh3 Rxb5 5.Bf6 Rdd5 6.Bc3 Rd1 7.Kg3 Rc5 8.Bf6 Rc4 9.Be5 Ke7 10.Rf6 Rd3+
-+ (-3.57) Depth: 17/44 00:00:36 158mN, tb=172022
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Rf3 Rb5 8.Re3 Kf8 9.Rc3 R2b4 10.Nd6 Rd5 11.Rf3+ Kg8 12.Nf5 Rd1
-+ (-3.61) Depth: 18/44 00:01:07 308mN, tb=356220
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kd7 10.Rg5 Rh3+ 11.Kg6 Ke6 12.Nc5+ Ke7 13.Ne4 Rd3 14.Re5+ Kd8 15.Kf6 g3 16.Nxg3 Rdxg3
-+ (-3.73) Depth: 19/51 00:02:09 602mN, tb=716247
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kd7 10.Rg5 Rh3+ 11.Kg6 Ke6 12.Nc5+ Ke7 13.Ne4 Rd3 14.Rb5 g3 15.Rb7+ Kd8 16.Kg5 Re2 17.Nxg3 Rxg3+
-+ (-3.70) Depth: 20/52 00:03:53 1099mN, tb=1364005
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kd7 10.Rg5 Rh3+ 11.Kg6 Ke6 12.Nc5+ Ke7 13.Ne4 Rd3 14.Rb5 g3 15.Rb7+ Kd8 16.Kg5 Re2 17.Nxg3 Rxg3+ 18.Kf4 Rge3
-+ (-3.71) Depth: 21/52 00:08:02 2264mN, tb=2944188
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kd7 10.Rg5 Rh3+ 11.Kg6 Ke6 12.Nc5+ Ke7 13.Ne4 Rd3 14.Rb5 g3 15.Rb7+ Kd8 16.Kg5 Re2 17.Nxg3 Rxg3+ 18.Kf4 Rge3
-+ (-3.71) Depth: 21/56 00:09:35 2672mN, tb=3438609
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kd7 10.Rg5 Rh3+ 11.Kg6 Ke6 12.Nc5+ Ke7 13.Ne4 Re3 14.Re5+ Kd8 15.Kg5 Rg1 16.Rd5+ Kc7 17.Rc5+ Kd7 18.Re5 Ra3 19.Nf6+ Kd6 20.Re8 g3 21.Ne4+
-+ (-3.71) Depth: 22/56 00:15:00 4202mN, tb=5459480
1...Rb8 2.Rf7+ Ke8 3.Rf5 Rd2+ 4.Kg3 Rxb2 5.Nd6+ Ke7 6.Ne4 R8b3+ 7.Kg4 Rg2+ 8.Kh5 g4 9.Re5+ Kd7 10.Rg5 Rh3+ 11.Kg6 Ke6 12.Nc5+ Ke7 13.Ne4 Re3 14.Re5+ Kd8 15.Kg5 Rg1 16.Rd5+ Kc7 17.Rc5+ Kd7 18.Re5 Ra3 19.Nf6+ Kd6 20.Re8 g3 21.Ne4+
-+ (-3.71) Depth: 22/56 00:17:40 4880mN, tb=6367259
Top
tano-urayoan
Posts: 638
Joined: Thu Aug 30, 2007 8:23 pm
Location: San Juan, Puerto Rico

Re: Erdo - Rybka Cluster 1/2-1/2

Post by tano-urayoan »

There is a saying in spanish Mr Ansari: "is not the arrow is the indian" blaming the arrow for missing the target.
Top
tano-urayoan
Posts: 638
Joined: Thu Aug 30, 2007 8:23 pm
Location: San Juan, Puerto Rico

Re: Erdo - Rybka Cluster 1/2-1/2

Post by tano-urayoan »

AdminX wrote:Over on the Rybka forum they were chating about this game. Here is what I get from Zappa Mexico.



Analysis by Zappa Mexico II:

1...Rd2+ 2.Kg3 Rxb2 3.Rd1+ Ke6 4.Nd4+ Kf6 5.Rf1+ Kg6 6.Ra1 Ra8 7.Rc1 Ra3+ 8.Nf3 Rg2+ 9.Kh3 g4+ 10.Kh4 gxf3 11.Rc6+ Kf5 12.Rc5+ Kf4 13.Rc4+ Ke3 14.Rb4 Ra1 15.Rb3+
-+ (-3.34) Depth: 9/23 00:00:01 489kN, tb=79
-+ (-13.75) Depth: 17/53 00:01:56 360mN, tb=214710

And then the Eval Changed!

Analysis by Zappa Mexico II:

1...Rd2+ 2.Rf2 Rxb2 3.Nc3 Rh8 4.Ne4 Rh2+ 5.Kf3 Re2 6.Nc5+ Ke7 7.Rg2 Rhxg2 8.Na4 Rgf2+ 9.Kg3 Ke6 10.Nc3 Kf5 11.Nxe2
-+ (-3.34) Depth: 9/23 00:00:01 489kN, tb=79
-+ (-#18) Depth: 22/63 00:16:55 3350mN, tb=2945291
This is an error Zappa is killing herself, with Kg3 the game is drawn. Here is an error 1...Rd2+ 2.Kg3 Rxb2 3.Rd1+ Ke6 4.Nd4+. Rxd8 and tablebase draw. If Ke7 anyway RxR and tablebase draw.

Mr Summers try another engine if you get the same output maybe you have corrupted tablebases or some misconfiguration.
Top
tano-urayoan
Posts: 638
Joined: Thu Aug 30, 2007 8:23 pm
Location: San Juan, Puerto Rico

Re: Erdo - Rybka Cluster 1/2-1/2

Post by tano-urayoan »

AdminX wrote:Over on the Rybka forum they were chating about this game. Here is what I get from Zappa Mexico.



Analysis by Zappa Mexico II:

1...Rd2+ 2.Kg3 Rxb2 3.Rd1+ Ke6 4.Nd4+ Kf6 5.Rf1+ Kg6 6.Ra1 Ra8 7.Rc1 Ra3+ 8.Nf3 Rg2+ 9.Kh3 g4+ 10.Kh4 gxf3 11.Rc6+ Kf5 12.Rc5+ Kf4 13.Rc4+ Ke3 14.Rb4 Ra1 15.Rb3+
-+ (-3.34) Depth: 9/23 00:00:01 489kN, tb=79
-+ (-13.75) Depth: 17/53 00:01:56 360mN, tb=214710

And then the Eval Changed!

Analysis by Zappa Mexico II:

1...Rd2+ 2.Rf2 Rxb2 3.Nc3 Rh8 4.Ne4 Rh2+ 5.Kf3 Re2 6.Nc5+ Ke7 7.Rg2 Rhxg2 8.Na4 Rgf2+ 9.Kg3 Ke6 10.Nc3 Kf5 11.Nxe2
-+ (-3.34) Depth: 9/23 00:00:01 489kN, tb=79
-+ (-#18) Depth: 22/63 00:16:55 3350mN, tb=2945291
This is an error Zappa is killing herself, with Kg3 the game is drawn. Here is an error 1...Rd2+ 2.Kg3 Rxb2 3.Rd1+ Ke6 4.Nd4+. Rxd8 and tablebase draw. If Ke7 anyway RxR and tablebase draw.

Mr Summers try another engine if you get the same output maybe you have corrupted tablebases or some misconfiguration. If not a Zappa error.
Top

Return to “Computer Chess Club: General Topics”