Deep Sjeng 3 vs Rybka 2 test position

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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Deep Sjeng 3 vs Rybka 2 test position

Post by kgburcham »

This position is from a Deep Sjeng 3.0 mp x64 vs Rybka 2.3.2a mp x64, on XP pro 64 with Quad 2.4 and 4 gigs ram. No thinking on opponent time.
Time was 4 hour game. Played 6 games and Deep Sjeng won two of them. Trying to see why Rybka lost.

I do not have Rybka 3. Was curious about how long Rybka 3 takes to see this, I assume it will see quickly.

30...h4

[d] r1b2rk1/1pp3q1/2Pp1b1p/3Pp3/1P2Q1p1/2NB2PP/5RP1/1R5K w - -
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Omega-three

Re: Deep Sjeng 3 vs Rybka 2 test position

Post by Omega-three »

New game - Deep Rybka 3
r1b2rk1/1pp3q1/2Pp1b1p/3Pp3/1P2Q1p1/2NB2PP/5RP1/1R5K w - - 0 1

Analysis by Deep Rybka 3:

1.hxg4
+/= (0.41 !) Depth: 6 00:00:00 5kN
1.hxg4 bxc6 2.dxc6 Bxg4 3.Nd5
+/= (0.45) Depth: 6 00:00:00 6kN
1.hxg4 bxc6 2.dxc6 Bxg4 3.Nd5 Bd8 4.Rxf8+
+/= (0.52) Depth: 7 00:00:00 11kN
1.hxg4 bxc6 2.dxc6 Be6 3.Bc4 Bxc4 4.Qxc4+ Kh8 5.Rbf1
+/= (0.65) Depth: 8 00:00:00 27kN
1.hxg4 Bd8 2.Rxf8+ Kxf8 3.Qc4 b5 4.Rf1+ Kg8
+/= (0.62) Depth: 9 00:00:00 70kN
1.hxg4 Bd8 2.Rxf8+ Kxf8 3.b5 b6 4.Qf3+ Kg8 5.Bf5
+/- (0.72) Depth: 10 00:00:01 113kN
1.hxg4
+/- (0.92 !) Depth: 11 00:00:02 218kN
1.hxg4 bxc6 2.dxc6[] Be6
+/- (0.94) Depth: 11 00:00:03 241kN
1.hxg4 bxc6 2.dxc6[] Be6 3.Bc4
+/- (1.06) Depth: 12 00:00:05 365kN
1.hxg4 bxc6 2.dxc6[] Be6 3.Bc4 Bxc4 4.Qxc4+[] Kh8 5.Rbf1 Bg5 6.Rf3 Rxf3 7.gxf3 Be3 8.Qe6 Bd4 9.Nd5
+/- (1.22) Depth: 13 00:00:10 758kN
1.hxg4 bxc6 2.dxc6[] Be6 3.Bc4 Bxc4 4.Qxc4+[] Kh8 5.Rbf1 Bg5 6.Rf3 Rxf3 7.gxf3 Ra3 8.Kg2 Bd8 9.Nd5 Qg6 10.Rd1
+/- (1.27) Depth: 14 00:00:18 1304kN
1.hxg4 bxc6 2.dxc6[] Be6 3.Bc4 Bxc4 4.Qxc4+[] Kh8 5.Rbf1 Bg5 6.Rf3 Rxf3 7.gxf3 Ra3 8.Kg2 Bd8 9.Nd5 Qg6 10.Rd1 Qf7
+/- (1.34) Depth: 15 00:00:31 2246kN
1.hxg4 bxc6 2.dxc6[] Be6 3.Bc4 Bxc4 4.Qxc4+[] Kh8 5.Rbf1 Bg5 6.Rf3 Rxf3 7.gxf3 Qg8 8.Nd5 Bd8 9.Kg2 Qe6 10.b5 Ra5 11.Rd1 Kg7
+- (1.51) Depth: 16 00:01:05 4643kN
1.hxg4 bxc6 2.dxc6[] Be6 3.Bc4 Bxc4 4.Qxc4+[] Kh8 5.Rbf1 Bg5 6.Rf3 Rxf3 7.gxf3 Qg8 8.Nd5 Bd8 9.Kg2 Qe6 10.b5 Ra5 11.Rf2 Kg7 12.Rc2
+- (1.48) Depth: 17 00:01:37 7279kN
1.hxg4
+- (1.68 !) Depth: 18 00:03:25 15223kN
1.hxg4
+- (1.88 !) Depth: 18 00:05:53 25980kN
1.hxg4 b6 2.Rbf1[] Ra3
+- (2.27) Depth: 18 00:10:52 49677kN
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

correction

Post by kgburcham »

Test position should have been 30.h4

[d] r1b2rk1/1pp3q1/2Pp1b1p/3Pp3/1P2Q1p1/2NB2PP/5RP1/1R5K w - -
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tjfroh
Posts: 8087
Joined: Thu Mar 09, 2006 9:51 pm
Location: Near the Intel Plant in the Land of Manana
Full name: Timothy Frohlick

Re: Deep Sjeng 3 vs Rybka 2 test position

Post by tjfroh »

Mike,

I also get the sequence:

1.hxg4 b6 2.Rbf1[] Ra3
+- (2.27) Depth: 18 00:10:52 49677kN

I find that after hxg4 Deep Rybka 3 goes to 20 ply searches in about 30 seconds on my E6850 dual processor at 3.15 Ghz.

I am not sure what Mr. Burcham is trying to show.

Tj
A New Way Comes Upon Earth.
God is an infinitely variable Constant.
Man marks his ground with ideologies.
Galaxies are the dreidels of God.
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Deep Sjeng 3 vs Rybka 2 test position

Post by bob »

Here's what I get with Crafty. It never chooses h4, assuming that is the key move you are looking for:

Code: Select all

               19->   1:04   1.27   1. hxg4 bxc6 2. dxc6 Be6 3. Rbf1 Bg5
                                    4. Bc4 Bxc4 5. Qxc4+ Kh8 6. Rf3 Rxf3
                                    7. gxf3 Be3 8. Nd5 Bd4 9. Rd1 Qf7 10.
                                    f4 Rd8 <HT>
               20     1:27   1.19   1. hxg4 bxc6 2. dxc6 Be6 3. Rbf1 Bg5
                                    4. Bc4 Bxc4 5. Qxc4+ Kh8 6. Rf3 Rxf3
                                    7. gxf3 Be3 8. Qe4 Bd4 9. Nd5 Ra6 10.
                                    Qc2 Ra3 11. b5
               20->   1:38   1.19   1. hxg4 bxc6 2. dxc6 Be6 3. Rbf1 Bg5
                                    4. Bc4 Bxc4 5. Qxc4+ Kh8 6. Rf3 Rxf3
                                    7. gxf3 Be3 8. Qe4 Bd4 9. Nd5 Ra6 10.
                                    Qc2 Ra3 11. b5
               21     2:52   1.53   1. hxg4 bxc6 2. dxc6 Be6 3. Bc4 Bxc4
                                    4. Qxc4+ Kh8 5. b5 Rac8 6. Nd5 Bg5
                                    7. Rxf8+ Rxf8 8. b6 Qg6 9. Rb5 cxb6
                                    10. c7 Qe6 11. Rxb6 e4 12. Rc6
               21->   3:10   1.53   1. hxg4 bxc6 2. dxc6 Be6 3. Bc4 Bxc4
                                    4. Qxc4+ Kh8 5. b5 Rac8 6. Nd5 Bg5
                                    7. Rxf8+ Rxf8 8. b6 Qg6 9. Rb5 cxb6
                                    10. c7 Qe6 11. Rxb6 e4 12. Rc6
               22     4:35   1.61   1. hxg4 bxc6 2. dxc6 Be6 3. Bc4 Bxc4
                                    4. Qxc4+ Kh8 5. b5 Rac8 6. Nd5 Qg8
                                    7. b6 cxb6 8. Rxb6 Be7 9. Rxf8 Bxf8
                                    10. Rb7 Bg7 11. c7 Bf6 12. Rb1
               22->   5:18   1.61   1. hxg4 bxc6 2. dxc6 Be6 3. Bc4 Bxc4
                                    4. Qxc4+ Kh8 5. b5 Rac8 6. Nd5 Qg8
                                    7. b6 cxb6 8. Rxb6 Be7 9. Rxf8 Bxf8
                                    10. Rb7 Bg7 11. c7 Bf6 12. Rb1
              time=5:18  mat=0  n=5347594847  fh=91%  nps=16.8M
              ext-> check=221.8M qcheck=272.9M 1rep=20.7M mate=12.9M reduce=2344.6M/407.8M
              predicted=0  evals=4112.4M  50move=0  EGTBprobes=0  hits=0
              SMP->  splits=197477  aborts=8499  data=45/512  elap=5:18
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