This position came up in a tourney I have been doing testing Rybka Human
[d]1r6/5B1k/4N2b/8/6R1/5K2/8/8 w - - 0 72
In this position Rybka Human almost immediately played Rg2! and showed an evaluation of over 4 ... test it on your engine. While some engines might play Rg2 ... do they see the forced follow up that leads to a forced resignation in reasonable time?
Tough test position
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AdminX
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Re: Tough test position
Okay I'm at work right now so I am using my personal laptop. When I get home I will try it on my quad. My question is why is Rg2 better than Bg6+ ? Note that Rybka 3 Human does not find it within the 5 minute thinking time given on this system. Funny that Delfi Trainer saw both Bg6 and Rg2 but evals Bg6 higher. I wish I had Deep Sjeng to test but that will have to wait till payday friday. I hear Deep Sjeng is very good at endgames. 
System is a Core2Duo T5450 @1.66 Ghz with 4GB Ram and 64-bit Vista OS with 5 minute think time for each engine used.
Analysis by HIARCS 12 MP:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Bf7
+/- (1.25) Depth: 10/26 00:00:00 264kN, tb=67
+- (2.04) Depth: 20/44 00:03:48 177mN, tb=219120
Analysis by Zappa Mexico II:
1.Bg6+ Kg8 2.Rc4 Bg7 3.Ke4 Bf6 4.Rc7 Bb2 5.Kf4 Ba3 6.Rg7+ Kh8 7.Rd7 Bc1+ 8.Ke4 Bb2 9.Kd5 Ba1 10.Be4 Re8
+/= (0.49) Depth: 8/20 00:00:01 138kN, tb=2
+/= (0.54) Depth: 17/41 00:01:53 111mN, tb=35547
1.Rg2 Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bf8 5.Ke4 Bd6 6.Rd7 Bf8 7.Kd5 Bh6 8.Rc7 Be3 9.Bh7+ Kh8 10.Bd3
+/= (0.56) Depth: 17/41 00:03:16 197mN, tb=60311
+/= (0.56) Depth: 18/43 00:05:02 308mN, tb=101415
Analysis by Deep Junior 10.1:
1.Bg6+ Kg8 2.Ra4 Bg7 3.Ra7 Be5 4.Ke4 Bb2 5.Kd5 Rb5+ 6.Kc4 Rb8 7.Kc5 Be5 8.Kd5 Rb5+ 9.Ke4
+/= (0.47) Depth: 3 00:00:00 0kN
+/= (0.54) Depth: 23 00:04:53 1176mN, tb=470998
Analysis by bright-0.3a:
1.Nd4
+- (2.74) Depth: 1/1 00:00:00
1.Nc5
+- (2.80) Depth: 1/5 00:00:00
1.Bg6+ Kg8 2.Rd4 Bg7 3.Rd7 Bf6 4.Kf4 Bb2 5.Bh7+ Kh8 6.Be4 Bc3 7.Ng5 Bg7 8.Nf7+ Kg8 9.Bd5 Kh7 10.Ng5+ Kh8 11.Kg4 Re8 12.Ra7 Rf8 13.Ne6
+- (2.91) Depth: 1/5 00:00:00
+- (3.20) Depth: 18/49 00:02:42 377mN
Analysis by Deep Shredder 11 UCI:
1.Rg7+ Bxg7 2.Kf4 Rb4+ 3.Kf5 Rb5+ 4.Ke4 Bc3 5.Kd3
= (0.23) Depth: 3/7 00:00:00
= (0.24) Depth: 5/11 00:00:00
1.Bg6+ Kg8 2.Ra4 Bd2 3.Ra7 Bc3 4.Ke4 Kh8 5.Rc7 Bb2 6.Rh7+ Kg8 7.Kd5 Rb5+ 8.Kc6 Rb4 9.Rd7 Rb8 10.Kc5 Be5 11.Kd5 Bf6 12.Bh7+ Kh8
+/= (0.27) Depth: 5/18 00:00:00
+/= (0.38) Depth: 19/45 00:03:10 180mN, tb=1701159
Analysis by DelfiT 5.4:
1.Bg6+ Kg8 2.Bh5+ Kh8 3.Rg2 Kh7
+- (4.20) Depth: 2 00:00:00
+- (4.08) Depth: 4 00:00:25
1.Rg2 Kh8 2.Ke4 Rb7 3.Bh5
+- (4.11) Depth: 4 00:00:31
+- (4.14) Depth: 5 00:00:43
1.Bg6+ Kg8 2.Rd4 Bg7 3.Rd7 Be5 4.Bh7+ Kh8 5.Be4 Kg8 6.Bd5 Kh8 7.Ke4 Bc3 8.Rc7 Bf6 9.Rf7 Bc3 10.Rd7 Kg8 11.Nd4+ Kf8
+- (4.27) Depth: 5 00:00:49
+- (4.47) Depth: 18 00:04:49 256mN
Analysis by Fritz 11:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Be4 Re8 6.Rh7+ Kg8 7.Rb7 Be5 8.Bd5 Kh8 9.Kf5 Bd6 10.Rd7 Be7 11.Nf4 Kg7 12.Ng6 Rf8+ 13.Nxf8 Kxf8
+- (3.66) Depth: 9/19 00:00:00 156kN, tb=39
+- (6.50) Depth: 24/39 00:04:31 311mN, tb=431168
Analysis by Naum 3.1:
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rd7 Be5 5.Kg4 Bb2 6.Be4 Bc3 7.Bd5 Kh8 8.Nf4 Bg7 9.Kg5 Rb5 10.Kg6 Rb8 11.Be6 Rf8 12.Nh5 Rf1
+/= (0.35) Depth: 1/12 00:00:01
+- (5.97) Depth: 24/53 00:03:45 429mN, tb=2181332
Analysis by Toga CMLX 1.4 beta5d:
1.Ke2
+/= (0.44) Depth: 1/5 00:00:01
1.Nd4
+/= (0.45) Depth: 1/9 00:00:01
1.Nc5
+/= (0.47) Depth: 1/9 00:00:01
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Ra8 5.Kf5 Bb2 6.Bf7 Kh7 7.Ng5+ Kh6 8.Rd6+ Kg7 9.Rg6+ Kh8 10.Rh6+ Kg7 11.Rh7+ Kf8 12.Ne6+ Ke7 13.Be8+ Kxe8 14.Nc7+ Kf8 15.Nxa8 Bg7 16.Nc7 Kg8
+/= (0.49) Depth: 1/9 00:00:01
+- (5.87) Depth: 22/60 00:04:43 582mN
Analysis by Glaurung 2.1:
1.Bg6+ Kg8 2.Ke2 Bg7
+/- (0.94) Depth: 2 00:00:01
+/- (0.94) Depth: 3 00:00:01
1.Nd4 Rf8 2.Ke4 Rxf7
+/- (0.96) Depth: 3 00:00:01
= (0.00) Depth: 4 00:00:01
1.Bg6+ Kg8 2.Rd4 Bg7 3.Rd7 Bf6 4.Bh7+ Kh8 5.Be4 Kg8 6.Bd5 Rb6 7.Kf4 Bc3 8.Kf5 Ba1 9.Kg6 Rxe6+ 10.Kf5 Bc3 11.Kxe6 Bb2 12.Rc7 Bd4 13.Kf5+ Kf8 14.Ke4 Bb6 15.Rh7
+/- (0.96) Depth: 4 00:00:01
+- (6.31) Depth: 24 00:05:11 709mN
Analysis by Rybka 3 Human :
1.Ke4 Rb4+ 2.Nd4 Bf8 3.Kf5 Be7
+/= (0.39) Depth: 2 00:00:00
+/= (0.42) Depth: 9 00:00:00 35kN
1.Bg6+
+/= (0.48) Depth: 9 00:00:00 72kN, tb=1
+- (5.59) Depth: 16 00:02:58 19747kN, tb=4487
System is a Core2Duo T5450 @1.66 Ghz with 4GB Ram and 64-bit Vista OS with 5 minute think time for each engine used.
Analysis by HIARCS 12 MP:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Bf7
+/- (1.25) Depth: 10/26 00:00:00 264kN, tb=67
+- (2.04) Depth: 20/44 00:03:48 177mN, tb=219120
Analysis by Zappa Mexico II:
1.Bg6+ Kg8 2.Rc4 Bg7 3.Ke4 Bf6 4.Rc7 Bb2 5.Kf4 Ba3 6.Rg7+ Kh8 7.Rd7 Bc1+ 8.Ke4 Bb2 9.Kd5 Ba1 10.Be4 Re8
+/= (0.49) Depth: 8/20 00:00:01 138kN, tb=2
+/= (0.54) Depth: 17/41 00:01:53 111mN, tb=35547
1.Rg2 Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bf8 5.Ke4 Bd6 6.Rd7 Bf8 7.Kd5 Bh6 8.Rc7 Be3 9.Bh7+ Kh8 10.Bd3
+/= (0.56) Depth: 17/41 00:03:16 197mN, tb=60311
+/= (0.56) Depth: 18/43 00:05:02 308mN, tb=101415
Analysis by Deep Junior 10.1:
1.Bg6+ Kg8 2.Ra4 Bg7 3.Ra7 Be5 4.Ke4 Bb2 5.Kd5 Rb5+ 6.Kc4 Rb8 7.Kc5 Be5 8.Kd5 Rb5+ 9.Ke4
+/= (0.47) Depth: 3 00:00:00 0kN
+/= (0.54) Depth: 23 00:04:53 1176mN, tb=470998
Analysis by bright-0.3a:
1.Nd4
+- (2.74) Depth: 1/1 00:00:00
1.Nc5
+- (2.80) Depth: 1/5 00:00:00
1.Bg6+ Kg8 2.Rd4 Bg7 3.Rd7 Bf6 4.Kf4 Bb2 5.Bh7+ Kh8 6.Be4 Bc3 7.Ng5 Bg7 8.Nf7+ Kg8 9.Bd5 Kh7 10.Ng5+ Kh8 11.Kg4 Re8 12.Ra7 Rf8 13.Ne6
+- (2.91) Depth: 1/5 00:00:00
+- (3.20) Depth: 18/49 00:02:42 377mN
Analysis by Deep Shredder 11 UCI:
1.Rg7+ Bxg7 2.Kf4 Rb4+ 3.Kf5 Rb5+ 4.Ke4 Bc3 5.Kd3
= (0.23) Depth: 3/7 00:00:00
= (0.24) Depth: 5/11 00:00:00
1.Bg6+ Kg8 2.Ra4 Bd2 3.Ra7 Bc3 4.Ke4 Kh8 5.Rc7 Bb2 6.Rh7+ Kg8 7.Kd5 Rb5+ 8.Kc6 Rb4 9.Rd7 Rb8 10.Kc5 Be5 11.Kd5 Bf6 12.Bh7+ Kh8
+/= (0.27) Depth: 5/18 00:00:00
+/= (0.38) Depth: 19/45 00:03:10 180mN, tb=1701159
Analysis by DelfiT 5.4:
1.Bg6+ Kg8 2.Bh5+ Kh8 3.Rg2 Kh7
+- (4.20) Depth: 2 00:00:00
+- (4.08) Depth: 4 00:00:25
1.Rg2 Kh8 2.Ke4 Rb7 3.Bh5
+- (4.11) Depth: 4 00:00:31
+- (4.14) Depth: 5 00:00:43
1.Bg6+ Kg8 2.Rd4 Bg7 3.Rd7 Be5 4.Bh7+ Kh8 5.Be4 Kg8 6.Bd5 Kh8 7.Ke4 Bc3 8.Rc7 Bf6 9.Rf7 Bc3 10.Rd7 Kg8 11.Nd4+ Kf8
+- (4.27) Depth: 5 00:00:49
+- (4.47) Depth: 18 00:04:49 256mN
Analysis by Fritz 11:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Be4 Re8 6.Rh7+ Kg8 7.Rb7 Be5 8.Bd5 Kh8 9.Kf5 Bd6 10.Rd7 Be7 11.Nf4 Kg7 12.Ng6 Rf8+ 13.Nxf8 Kxf8
+- (3.66) Depth: 9/19 00:00:00 156kN, tb=39
+- (6.50) Depth: 24/39 00:04:31 311mN, tb=431168
Analysis by Naum 3.1:
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rd7 Be5 5.Kg4 Bb2 6.Be4 Bc3 7.Bd5 Kh8 8.Nf4 Bg7 9.Kg5 Rb5 10.Kg6 Rb8 11.Be6 Rf8 12.Nh5 Rf1
+/= (0.35) Depth: 1/12 00:00:01
+- (5.97) Depth: 24/53 00:03:45 429mN, tb=2181332
Analysis by Toga CMLX 1.4 beta5d:
1.Ke2
+/= (0.44) Depth: 1/5 00:00:01
1.Nd4
+/= (0.45) Depth: 1/9 00:00:01
1.Nc5
+/= (0.47) Depth: 1/9 00:00:01
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Ra8 5.Kf5 Bb2 6.Bf7 Kh7 7.Ng5+ Kh6 8.Rd6+ Kg7 9.Rg6+ Kh8 10.Rh6+ Kg7 11.Rh7+ Kf8 12.Ne6+ Ke7 13.Be8+ Kxe8 14.Nc7+ Kf8 15.Nxa8 Bg7 16.Nc7 Kg8
+/= (0.49) Depth: 1/9 00:00:01
+- (5.87) Depth: 22/60 00:04:43 582mN
Analysis by Glaurung 2.1:
1.Bg6+ Kg8 2.Ke2 Bg7
+/- (0.94) Depth: 2 00:00:01
+/- (0.94) Depth: 3 00:00:01
1.Nd4 Rf8 2.Ke4 Rxf7
+/- (0.96) Depth: 3 00:00:01
= (0.00) Depth: 4 00:00:01
1.Bg6+ Kg8 2.Rd4 Bg7 3.Rd7 Bf6 4.Bh7+ Kh8 5.Be4 Kg8 6.Bd5 Rb6 7.Kf4 Bc3 8.Kf5 Ba1 9.Kg6 Rxe6+ 10.Kf5 Bc3 11.Kxe6 Bb2 12.Rc7 Bd4 13.Kf5+ Kf8 14.Ke4 Bb6 15.Rh7
+/- (0.96) Depth: 4 00:00:01
+- (6.31) Depth: 24 00:05:11 709mN
Analysis by Rybka 3 Human :
1.Ke4 Rb4+ 2.Nd4 Bf8 3.Kf5 Be7
+/= (0.39) Depth: 2 00:00:00
+/= (0.42) Depth: 9 00:00:00 35kN
1.Bg6+
+/= (0.48) Depth: 9 00:00:00 72kN, tb=1
+- (5.59) Depth: 16 00:02:58 19747kN, tb=4487
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
__________________________________________________________________
Ted Summers
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M ANSARI
- Posts: 3707
- Joined: Thu Mar 16, 2006 7:10 pm
Re: Tough test position
Yes it seems that Bg6+! also wins ... funny how some obscure engines find it better than some of the best! Actually I did not test the position for each engine for more than 3 minutes ... I was very impressed how Rybka Human found it within a few seconds. Ofcourse that was on an 8core @ 3.2 ghz Positions like this without pawns usually need some waiting move ... or at least they need some method of trapping a piece while at the same time threatening mate to be able to take the piece. That is where EGTB's are very useful ... and where on many occasions in exactly such positions engines simply cannot find the right moves ... at least not within reasonable time. They will give a very high score due to the extra piece but will fail to get the win. I am curious if Delfi can actually find the win if you let her play against Rybka in that position ... I say that because the evaluation seems quite steady even at 0 depth.
Hardware here is Q6600 at 3.4Ghz
Here is Rybka Human's analysis for Bg6+
New game
1r6/7k/4N1Bb/8/6R1/5K2/8/8 b - - 0 1
Analysis by Rybka 3 Human :
1...Kg8
² (0.37) Depth: 3 00:00:00
1...Kg8
² (0.39) Depth: 3 00:00:00
1...Kg8 2.Rd4 Bg7
² (0.44) Depth: 5 00:00:00
1...Kg8 2.Rd4 Bg7
² (0.44) Depth: 6 00:00:00 0kN
1...Kg8 2.Rd4 Bg7 3.Rd7
² (0.47) Depth: 7 00:00:00 2kN
1...Kg8 2.Rd4 Bg7 3.Rd7 Bc3
² (0.46) Depth: 8 00:00:00 4kN
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4
² (0.48) Depth: 9 00:00:00 10kN
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4 Bf6
² (0.48) Depth: 10 00:00:00 17kN, tb=1
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4 Bf6 5.Rc7
² (0.48) Depth: 11 00:00:00 35kN, tb=2
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4 Bf6 5.Rc7 Ra8
² (0.49) Depth: 12 00:00:00 70kN, tb=5
1...Kg8 2.Rd4 Bg7 3.Rd7 Bc3 4.Kg4 Rb4+ 5.Kg5 Rb8 6.Bh7+ Kh8 7.Be4
² (0.50) Depth: 13 00:00:00 169kN, tb=9
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Rb4+ 5.Kg5 Bc1+ 6.Kf5 Rb5+ 7.Ke4
² (0.55) Depth: 14 00:00:01 375kN, tb=16
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Rb4+ 5.Kg5 Bc1+ 6.Kh5 Rb5+ 7.Bf5 Bb2 8.Kg6
² (0.53) Depth: 15 00:00:01 666kN, tb=33
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Rb4+ 5.Kg5 Bc1+ 6.Kh5 Rb5+ 7.Bf5 Bb2 8.Kg6
² (0.56) Depth: 16 00:00:02 957kN, tb=58
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Bh7+ Kh8 5.Be4 Re8 6.Bd5 Rg8 7.Ke4 Rg1 8.Kf5 Bc1
² (0.62) Depth: 17 00:00:04 1662kN, tb=113
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Bc1+ 5.Kg4 Kh8 6.Be4
² (0.64) Depth: 18 00:00:08 3025kN, tb=192
1...Kg8 2.Rd4
+- (5.12) Depth: 19 00:00:35 13402kN, tb=2332
(, 13.08.2008)
Here is analysis for Rg2!
New game
1r6/5B1k/4N2b/8/8/5K2/6R1/8 b - - 0 1
Analysis by Rybka 3 Human :
1...Bf8
² (0.40) Depth: 3 00:00:00
1...Bf8
² (0.40) Depth: 3 00:00:00
1...Bf8
² (0.46) Depth: 3 00:00:00
1...Rb6
² (0.42) Depth: 3 00:00:00
1...Rb3+
² (0.39) Depth: 3 00:00:00
1...Rb3+
² (0.42) Depth: 4 00:00:00
1...Rb4 2.Bg6+
² (0.39) Depth: 4 00:00:00
1...Rb4 2.Bg6+
² (0.39) Depth: 5 00:00:00
1...Rb4 2.Bg6+ Kg8 3.Be8+
² (0.41) Depth: 6 00:00:00 3kN
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb3+
² (0.52) Depth: 7 00:00:00 7kN
1...Rb3+ 2.Ke4 Re3+ 3.Kd5 Rd3+
² (0.41) Depth: 7 00:00:00 19kN
1...Rb3+ 2.Ke4 Re3+ 3.Kd5 Rd3+ 4.Ke5
² (0.44) Depth: 8 00:00:00 24kN
1...Bc1 2.Rg7+ Kh8 3.Bg6
² (0.48) Depth: 10 00:00:00 68kN, tb=1
1...Bc1 2.Rg7+ Kh8 3.Bg6
² (0.48) Depth: 10 00:00:00 68kN, tb=1
1...Bc1 2.Rg7+ Kh8 3.Bg6
² (0.48) Depth: 10 00:00:00 68kN, tb=1
1...Bc1 2.Rg7+ Kh8 3.Bg6 Bb2 4.Rd7 Rb3+ 5.Ke4 Rb4+ 6.Kd5
² (0.49) Depth: 11 00:00:00 110kN, tb=3
1...Bc1 2.Rg7+ Kh8 3.Bg6 Bb2 4.Rd7 Rb3+ 5.Ke4 Rb4+ 6.Kd5 Rb5+ 7.Kc6
² (0.48) Depth: 12 00:00:00 187kN, tb=5
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bd2 5.Kg4 Kh8 6.Bd3 Ba5
² (0.52) Depth: 13 00:00:01 652kN, tb=21
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bd2 5.Ke4 Bb4 6.Kd5 Ba3 7.Bh7+ Kh8 8.Bd3
² (0.59) Depth: 14 00:00:02 841kN, tb=30
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bf8 5.Bh7+ Kh8 6.Bd3 Bd6 7.Rh7+ Kg8 8.Rg7+ Kh8
² (0.57) Depth: 15 00:00:03 1366kN, tb=51
1...Rb4 2.Bg6+
+- (5.65) Depth: 16 00:00:19 6419kN, tb=648
(, 13.08.2008)
Not bad ... 19 seconds for Rg2! ... and 35 seconds for Bg6+. On Octa Rg2! was found much quicker.
Hardware here is Q6600 at 3.4Ghz
Here is Rybka Human's analysis for Bg6+
New game
1r6/7k/4N1Bb/8/6R1/5K2/8/8 b - - 0 1
Analysis by Rybka 3 Human :
1...Kg8
² (0.37) Depth: 3 00:00:00
1...Kg8
² (0.39) Depth: 3 00:00:00
1...Kg8 2.Rd4 Bg7
² (0.44) Depth: 5 00:00:00
1...Kg8 2.Rd4 Bg7
² (0.44) Depth: 6 00:00:00 0kN
1...Kg8 2.Rd4 Bg7 3.Rd7
² (0.47) Depth: 7 00:00:00 2kN
1...Kg8 2.Rd4 Bg7 3.Rd7 Bc3
² (0.46) Depth: 8 00:00:00 4kN
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4
² (0.48) Depth: 9 00:00:00 10kN
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4 Bf6
² (0.48) Depth: 10 00:00:00 17kN, tb=1
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4 Bf6 5.Rc7
² (0.48) Depth: 11 00:00:00 35kN, tb=2
1...Kg8 2.Ra4 Bc1 3.Ra7 Bb2 4.Ke4 Bf6 5.Rc7 Ra8
² (0.49) Depth: 12 00:00:00 70kN, tb=5
1...Kg8 2.Rd4 Bg7 3.Rd7 Bc3 4.Kg4 Rb4+ 5.Kg5 Rb8 6.Bh7+ Kh8 7.Be4
² (0.50) Depth: 13 00:00:00 169kN, tb=9
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Rb4+ 5.Kg5 Bc1+ 6.Kf5 Rb5+ 7.Ke4
² (0.55) Depth: 14 00:00:01 375kN, tb=16
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Rb4+ 5.Kg5 Bc1+ 6.Kh5 Rb5+ 7.Bf5 Bb2 8.Kg6
² (0.53) Depth: 15 00:00:01 666kN, tb=33
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Rb4+ 5.Kg5 Bc1+ 6.Kh5 Rb5+ 7.Bf5 Bb2 8.Kg6
² (0.56) Depth: 16 00:00:02 957kN, tb=58
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Bh7+ Kh8 5.Be4 Re8 6.Bd5 Rg8 7.Ke4 Rg1 8.Kf5 Bc1
² (0.62) Depth: 17 00:00:04 1662kN, tb=113
1...Kg8 2.Rd4 Bg7 3.Rd7 Bb2 4.Kf4 Bc1+ 5.Kg4 Kh8 6.Be4
² (0.64) Depth: 18 00:00:08 3025kN, tb=192
1...Kg8 2.Rd4
+- (5.12) Depth: 19 00:00:35 13402kN, tb=2332
(, 13.08.2008)
Here is analysis for Rg2!
New game
1r6/5B1k/4N2b/8/8/5K2/6R1/8 b - - 0 1
Analysis by Rybka 3 Human :
1...Bf8
² (0.40) Depth: 3 00:00:00
1...Bf8
² (0.40) Depth: 3 00:00:00
1...Bf8
² (0.46) Depth: 3 00:00:00
1...Rb6
² (0.42) Depth: 3 00:00:00
1...Rb3+
² (0.39) Depth: 3 00:00:00
1...Rb3+
² (0.42) Depth: 4 00:00:00
1...Rb4 2.Bg6+
² (0.39) Depth: 4 00:00:00
1...Rb4 2.Bg6+
² (0.39) Depth: 5 00:00:00
1...Rb4 2.Bg6+ Kg8 3.Be8+
² (0.41) Depth: 6 00:00:00 3kN
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb3+
² (0.52) Depth: 7 00:00:00 7kN
1...Rb3+ 2.Ke4 Re3+ 3.Kd5 Rd3+
² (0.41) Depth: 7 00:00:00 19kN
1...Rb3+ 2.Ke4 Re3+ 3.Kd5 Rd3+ 4.Ke5
² (0.44) Depth: 8 00:00:00 24kN
1...Bc1 2.Rg7+ Kh8 3.Bg6
² (0.48) Depth: 10 00:00:00 68kN, tb=1
1...Bc1 2.Rg7+ Kh8 3.Bg6
² (0.48) Depth: 10 00:00:00 68kN, tb=1
1...Bc1 2.Rg7+ Kh8 3.Bg6
² (0.48) Depth: 10 00:00:00 68kN, tb=1
1...Bc1 2.Rg7+ Kh8 3.Bg6 Bb2 4.Rd7 Rb3+ 5.Ke4 Rb4+ 6.Kd5
² (0.49) Depth: 11 00:00:00 110kN, tb=3
1...Bc1 2.Rg7+ Kh8 3.Bg6 Bb2 4.Rd7 Rb3+ 5.Ke4 Rb4+ 6.Kd5 Rb5+ 7.Kc6
² (0.48) Depth: 12 00:00:00 187kN, tb=5
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bd2 5.Kg4 Kh8 6.Bd3 Ba5
² (0.52) Depth: 13 00:00:01 652kN, tb=21
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bd2 5.Ke4 Bb4 6.Kd5 Ba3 7.Bh7+ Kh8 8.Bd3
² (0.59) Depth: 14 00:00:02 841kN, tb=30
1...Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bf8 5.Bh7+ Kh8 6.Bd3 Bd6 7.Rh7+ Kg8 8.Rg7+ Kh8
² (0.57) Depth: 15 00:00:03 1366kN, tb=51
1...Rb4 2.Bg6+
+- (5.65) Depth: 16 00:00:19 6419kN, tb=648
(, 13.08.2008)
Not bad ... 19 seconds for Rg2! ... and 35 seconds for Bg6+. On Octa Rg2! was found much quicker.
-
AdminX
- Posts: 6320
- Joined: Mon Mar 13, 2006 2:34 pm
- Location: Acworth, GA
Re: Tough test position
Here are the results from my quad. Take a look at the Bright, Toga CMLX 1.4 and Zappa Mexico II engine outputs. System Core2Quad Q6700 @ 2.66 GHz with 8 GB Ram, 64-bit Vista OS, 5 minute thinking given for each engine.
Analysis by HIARCS 12 MP:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Be4 Re8 6.Ng5 Bg7 7.Nf7+ Kg8 8.Bd5 Rf8 9.Ng5+ Kh8 10.Ne6 Rg8 11.Kh5 Bf6 12.Rb7 Rg3 13.Nf4 Rg5+ 14.Kh6 Rxd5 15.Nxd5 Bg7+ 16.Kg6 Be5
+/- (1.28) Depth: 11/28 00:00:00 404kN, tb=185
+- (6.25) Depth: 23/51 00:04:41 764mN, tb=780278
Analysis by Deep Junior 10.1:
1.Bg6+ Kg8 2.Ra4 Bd2 3.Ra7 Bc3 4.Ke4
+/= (0.42) Depth: 6 00:00:00 9kN
+/= (0.55) Depth: 24 00:04:51 2245mN, tb=911784
Analysis by Deep Shredder 11 UCI:
1.Bg6+ Kg8 2.Bh5+ Kh7 3.Ke4 Rb5 4.Bg6+ Kg8
= (0.23) Depth: 3/7 00:00:00
= (0.21) Depth: 4/16 00:00:00
1.Rg7+ Bxg7 2.Ke4 Rb2 3.Kd5 Rd2+ 4.Kc6 Be5
= (0.25) Depth: 4/16 00:00:00
+/= (0.27) Depth: 5/17 00:00:00
1.Ke4 Rb2 2.Ke5 Rf2 3.Bg6+
+/= (0.29) Depth: 5/17 00:00:00
1.Bg6+ Kg8 2.Ra4 Bg7 3.Ra7 Bc3 4.Ke4 Kh8 5.Rh7+ Kg8 6.Kd5 Ra8 7.Rc7 Bf6 8.Kd6 Ra6+ 9.Kc5 Ra8 10.Bh7+ Kh8 11.Be4 Rb8 12.Rf7 Bb2 13.Kd6 Ba3+ 14.Kd5 Rb5+
+/= (0.27) Depth: 7/21 00:00:00 222kN, tb=1545
+/= (0.38) Depth: 21/46 00:04:43 748mN, tb=7832005
Analysis by DelfiT 5.4:
1.Bg6+ Kg8 2.Ra4 Bd2 3.Ra7 Bc3 4.Bh7+ Kh8 5.Be4 Be5 6.Rd7 Kg8 7.Bd5 Kh8 8.Ke4 Bc3 9.Kf5 Rb1 10.Rc7 Rf1+ 11.Kg6 Rf6+ 12.Kg5 Bb2 13.Ra7
+- (4.20) Depth: 2 00:00:00
+- (4.47) Depth: 20 00:04:12 742mN
Analysis by Naum 3.1:
1.Bg6+ Kg8 2.Rc4 Bd2 3.Rc7 Kh8 4.Be4 Re8 5.Bd5 Ba5 6.Ra7 Bb6 7.Rb7 Be3 8.Rb4 Kh7 9.Kxe3 Kg6 10.Rh4 Kf6 11.Rf4+ Ke7 12.Ng7 Rb8 13.Nf5+ Ke8 14.Nd4
+/= (0.35) Depth: 1/12 00:00:00
+- (6.17) Depth: 27/60 00:04:01 1558mN, tb=7715468
Analysis by Glaurung 2.1:
1.Bg6+ Kg8 2.Rc4 Bg7 3.Ke4 Bb2 4.Rc7 Rb4+ 5.Kf5 Rb5+ 6.Kg4 Rb8 7.Kg5 Ba3 8.Rg7+ Kh8 9.Rh7+ Kg8 10.Rc7 Rb5+ 11.Bf5 Rb8 12.Kg6 Bb2 13.Kh6 Bc1+ 14.Rxc1 Kf7 15.Kg5 Ke7 16.Kf4 Kd6
+/- (0.96) Depth: 5 00:00:01
+- (8.82) Depth: 26 00:03:55 1580mN
Analysis by bright-0.3a:
1.Nd4
+- (2.74) Depth: 1/1 00:00:00
1.Bg6+ Kg8 2.Ra4 Bg7 3.Ra7 Bc3 4.Bh7+ Kh8 5.Be4 Bd2 6.Bd5 Bc1 7.Rc7 Bb2 8.Ke4 Rg8 9.Kf5 Bg7 10.Ra7 Bf8 11.Ng5 Rg7 12.Ra8
+- (2.91) Depth: 1/5 00:00:00
+- (3.44) Depth: 20/54 00:03:36 1672mN
1.Rg2 Kh8 2.Ke4 Rb7 3.Bg6 Kg8 4.Rc2 Rb8 5.Rc7 Bd2 6.Bf7+ Kh7 7.Rc2 Rb4+ 8.Kf5 Be1 9.Rg2 Rb5+ 10.Ke4 Rb4+ 11.Kd5 Kh6 12.Rg6+ Kh5 13.Rg1+ Kh4 14.Rxe1
+- (5.97) Depth: 20/54 00:04:58 2297mN
+- (5.97) Depth: 20/54 00:04:58 2297mN
Analysis by Toga CMLX 1.4 beta5d:
1.Nc5
+/= (0.47) Depth: 1/9 00:00:00
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rg7+ Kh8 5.Rh7+ Kg8 6.Ke4 Ba3 7.Rd7 Bb2 8.Bf7+ Kh7 9.Ng5+ Kg7 10.Kf5 Rb5+ 11.Bd5+ Kf8 12.Kg6 Rb6+ 13.Ne6+ Ke8 14.Rc7 Be5 15.Bc6+ Rxc6 16.Rxc6 Kd7
+/= (0.49) Depth: 1/9 00:00:00
+- (5.00) Depth: 21/68 00:04:59 1710mN
Analysis by Zappa Mexico II:
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rd7 Be5 5.Ke4 Bc3 6.Rc7 Ba5 7.Bf7+ Kh7 8.Rc2 Rb4+ 9.Kd5 Rh4 10.Rg2 Bb4 11.Bg6+ Kg8 12.Rc2 Bf8
+/= (0.53) Depth: 10/28 00:00:02 962kN, tb=156
+/= (0.54) Depth: 17/39 00:00:34 111mN, tb=36859
1.Rg2 Kh8 2.Ke4 Rb7 3.Bg6 Bg7 4.Rc2 Rb4+ 5.Kf5 Rb5+ 6.Kf4 Rb8 7.Bf7 Rb2 8.Rc8+ Kh7 9.Ng5+ Kh6 10.Rc6+ Bf6 11.Rxf6+ Kg7 12.Rg6+ Kf8 13.Ke5 Ke7 14.Be6 Rb1 15.Rg7+
+/= (0.55) Depth: 17/47 00:01:02 196mN, tb=61445
+- (5.40) Depth: 20/52 00:04:54 995mN, tb=412860
Analysis by Fritz 11:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Be4 Re8 6.Rh7+ Kg8 7.Rb7 Be5 8.Bd5 Kh8 9.Kf5 Bd6 10.Rd7 Be7 11.Nf4 Kg7 12.Ng6 Kh6 13.Nxe7 Rb8 14.Be4 Rb5+ 15.Kf4
+- (3.66) Depth: 9/19 00:00:00 156kN, tb=39
+- (7.13) Depth: 25/41 00:03:31 550mN, tb=756809
Analysis by Rybka 3 Human :
1.Ke4 Rb4+ 2.Nd4 Bf8 3.Kf5 Rb2
+/= (0.39) Depth: 2 00:00:00
+/= (0.43) Depth: 9 00:00:00 64kN
1.Bg6+
+/= (0.48) Depth: 9 00:00:00 93kN
+- (4.64) Depth: 20 00:01:05 17152kN, tb=2841
Note: Toga's results after a little more time. I only let it run a little longer because I noticed it was not using all 4 cores
Analysis by Toga CMLX 1.4 beta5d:
1.Nc5
+/= (0.47) Depth: 1/9 00:00:00
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rg7+ Kh8 5.Rh7+ Kg8 6.Ke4 Ba3 7.Rd7 Bb2 8.Bf7+ Kh7 9.Ng5+ Kg7 10.Kf5 Rb5+ 11.Bd5+ Kf8 12.Kg6 Rb6+ 13.Ne6+ Ke8 14.Rc7 Be5 15.Bc6+ Rxc6 16.Rxc6 Kd7
+/= (0.49) Depth: 1/9 00:00:00
+- (5.00) Depth: 21/68 00:04:59 1710mN
1.Rg2 Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Ke4 Bg7 5.Rc7 Bb2 6.Kf4 Kh8 7.Kf5 Ra8 8.Bf7 Kh7 9.Ng5+ Kh6 10.Rc6+ Kg7 11.Rg6+ Kh8 12.Rh6+ Kg7 13.Rh7+ Kf8 14.Ne6+ Ke7 15.Be8+ Kxe8 16.Nc7+ Kf8
+- (5.27) Depth: 22/68 00:05:56 2079mN
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rg7+ Kh8 5.Rh7+ Kg8 6.Ke4 Ba3 7.Rd7 Bb2 8.Bf7+ Kh7 9.Ng5+ Kg7 10.Kf5 Rb5+ 11.Bd5+ Kf8 12.Kg6 Ke8 13.Bc6 Rb6 14.Rc7+ Rxc6+ 15.Rxc6 Kd7 16.Rc4 Be5
+- (5.31) Depth: 22/68 00:06:04 2131mN
1.Rg2 Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bf8 5.Kg4 Bd6 6.Rd7 Bf8 7.Kf5 Bh6 8.Bf7+ Kh7 9.Rd3 Rb5+ 10.Kf6 Rb8 11.Rh3 Rb6 12.Bg6+ Kg8 13.Rxh6 Rxe6+ 14.Kxe6 Kg7 15.Rh1 Kxg6 16.Rg1+ Kh5
+- (5.51) Depth: 22/68 00:06:36 2341mN
+- (5.76) Depth: 23/68 00:07:39 2738mN
Analysis by HIARCS 12 MP:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Be4 Re8 6.Ng5 Bg7 7.Nf7+ Kg8 8.Bd5 Rf8 9.Ng5+ Kh8 10.Ne6 Rg8 11.Kh5 Bf6 12.Rb7 Rg3 13.Nf4 Rg5+ 14.Kh6 Rxd5 15.Nxd5 Bg7+ 16.Kg6 Be5
+/- (1.28) Depth: 11/28 00:00:00 404kN, tb=185
+- (6.25) Depth: 23/51 00:04:41 764mN, tb=780278
Analysis by Deep Junior 10.1:
1.Bg6+ Kg8 2.Ra4 Bd2 3.Ra7 Bc3 4.Ke4
+/= (0.42) Depth: 6 00:00:00 9kN
+/= (0.55) Depth: 24 00:04:51 2245mN, tb=911784
Analysis by Deep Shredder 11 UCI:
1.Bg6+ Kg8 2.Bh5+ Kh7 3.Ke4 Rb5 4.Bg6+ Kg8
= (0.23) Depth: 3/7 00:00:00
= (0.21) Depth: 4/16 00:00:00
1.Rg7+ Bxg7 2.Ke4 Rb2 3.Kd5 Rd2+ 4.Kc6 Be5
= (0.25) Depth: 4/16 00:00:00
+/= (0.27) Depth: 5/17 00:00:00
1.Ke4 Rb2 2.Ke5 Rf2 3.Bg6+
+/= (0.29) Depth: 5/17 00:00:00
1.Bg6+ Kg8 2.Ra4 Bg7 3.Ra7 Bc3 4.Ke4 Kh8 5.Rh7+ Kg8 6.Kd5 Ra8 7.Rc7 Bf6 8.Kd6 Ra6+ 9.Kc5 Ra8 10.Bh7+ Kh8 11.Be4 Rb8 12.Rf7 Bb2 13.Kd6 Ba3+ 14.Kd5 Rb5+
+/= (0.27) Depth: 7/21 00:00:00 222kN, tb=1545
+/= (0.38) Depth: 21/46 00:04:43 748mN, tb=7832005
Analysis by DelfiT 5.4:
1.Bg6+ Kg8 2.Ra4 Bd2 3.Ra7 Bc3 4.Bh7+ Kh8 5.Be4 Be5 6.Rd7 Kg8 7.Bd5 Kh8 8.Ke4 Bc3 9.Kf5 Rb1 10.Rc7 Rf1+ 11.Kg6 Rf6+ 12.Kg5 Bb2 13.Ra7
+- (4.20) Depth: 2 00:00:00
+- (4.47) Depth: 20 00:04:12 742mN
Analysis by Naum 3.1:
1.Bg6+ Kg8 2.Rc4 Bd2 3.Rc7 Kh8 4.Be4 Re8 5.Bd5 Ba5 6.Ra7 Bb6 7.Rb7 Be3 8.Rb4 Kh7 9.Kxe3 Kg6 10.Rh4 Kf6 11.Rf4+ Ke7 12.Ng7 Rb8 13.Nf5+ Ke8 14.Nd4
+/= (0.35) Depth: 1/12 00:00:00
+- (6.17) Depth: 27/60 00:04:01 1558mN, tb=7715468
Analysis by Glaurung 2.1:
1.Bg6+ Kg8 2.Rc4 Bg7 3.Ke4 Bb2 4.Rc7 Rb4+ 5.Kf5 Rb5+ 6.Kg4 Rb8 7.Kg5 Ba3 8.Rg7+ Kh8 9.Rh7+ Kg8 10.Rc7 Rb5+ 11.Bf5 Rb8 12.Kg6 Bb2 13.Kh6 Bc1+ 14.Rxc1 Kf7 15.Kg5 Ke7 16.Kf4 Kd6
+/- (0.96) Depth: 5 00:00:01
+- (8.82) Depth: 26 00:03:55 1580mN
Analysis by bright-0.3a:
1.Nd4
+- (2.74) Depth: 1/1 00:00:00
1.Bg6+ Kg8 2.Ra4 Bg7 3.Ra7 Bc3 4.Bh7+ Kh8 5.Be4 Bd2 6.Bd5 Bc1 7.Rc7 Bb2 8.Ke4 Rg8 9.Kf5 Bg7 10.Ra7 Bf8 11.Ng5 Rg7 12.Ra8
+- (2.91) Depth: 1/5 00:00:00
+- (3.44) Depth: 20/54 00:03:36 1672mN
1.Rg2 Kh8 2.Ke4 Rb7 3.Bg6 Kg8 4.Rc2 Rb8 5.Rc7 Bd2 6.Bf7+ Kh7 7.Rc2 Rb4+ 8.Kf5 Be1 9.Rg2 Rb5+ 10.Ke4 Rb4+ 11.Kd5 Kh6 12.Rg6+ Kh5 13.Rg1+ Kh4 14.Rxe1
+- (5.97) Depth: 20/54 00:04:58 2297mN
+- (5.97) Depth: 20/54 00:04:58 2297mN
Analysis by Toga CMLX 1.4 beta5d:
1.Nc5
+/= (0.47) Depth: 1/9 00:00:00
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rg7+ Kh8 5.Rh7+ Kg8 6.Ke4 Ba3 7.Rd7 Bb2 8.Bf7+ Kh7 9.Ng5+ Kg7 10.Kf5 Rb5+ 11.Bd5+ Kf8 12.Kg6 Rb6+ 13.Ne6+ Ke8 14.Rc7 Be5 15.Bc6+ Rxc6 16.Rxc6 Kd7
+/= (0.49) Depth: 1/9 00:00:00
+- (5.00) Depth: 21/68 00:04:59 1710mN
Analysis by Zappa Mexico II:
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rd7 Be5 5.Ke4 Bc3 6.Rc7 Ba5 7.Bf7+ Kh7 8.Rc2 Rb4+ 9.Kd5 Rh4 10.Rg2 Bb4 11.Bg6+ Kg8 12.Rc2 Bf8
+/= (0.53) Depth: 10/28 00:00:02 962kN, tb=156
+/= (0.54) Depth: 17/39 00:00:34 111mN, tb=36859
1.Rg2 Kh8 2.Ke4 Rb7 3.Bg6 Bg7 4.Rc2 Rb4+ 5.Kf5 Rb5+ 6.Kf4 Rb8 7.Bf7 Rb2 8.Rc8+ Kh7 9.Ng5+ Kh6 10.Rc6+ Bf6 11.Rxf6+ Kg7 12.Rg6+ Kf8 13.Ke5 Ke7 14.Be6 Rb1 15.Rg7+
+/= (0.55) Depth: 17/47 00:01:02 196mN, tb=61445
+- (5.40) Depth: 20/52 00:04:54 995mN, tb=412860
Analysis by Fritz 11:
1.Bg6+ Kg8 2.Rd4 Bc1 3.Rd7 Kh8 4.Kg4 Bb2 5.Be4 Re8 6.Rh7+ Kg8 7.Rb7 Be5 8.Bd5 Kh8 9.Kf5 Bd6 10.Rd7 Be7 11.Nf4 Kg7 12.Ng6 Kh6 13.Nxe7 Rb8 14.Be4 Rb5+ 15.Kf4
+- (3.66) Depth: 9/19 00:00:00 156kN, tb=39
+- (7.13) Depth: 25/41 00:03:31 550mN, tb=756809
Analysis by Rybka 3 Human :
1.Ke4 Rb4+ 2.Nd4 Bf8 3.Kf5 Rb2
+/= (0.39) Depth: 2 00:00:00
+/= (0.43) Depth: 9 00:00:00 64kN
1.Bg6+
+/= (0.48) Depth: 9 00:00:00 93kN
+- (4.64) Depth: 20 00:01:05 17152kN, tb=2841
Note: Toga's results after a little more time. I only let it run a little longer because I noticed it was not using all 4 cores
Analysis by Toga CMLX 1.4 beta5d:
1.Nc5
+/= (0.47) Depth: 1/9 00:00:00
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rg7+ Kh8 5.Rh7+ Kg8 6.Ke4 Ba3 7.Rd7 Bb2 8.Bf7+ Kh7 9.Ng5+ Kg7 10.Kf5 Rb5+ 11.Bd5+ Kf8 12.Kg6 Rb6+ 13.Ne6+ Ke8 14.Rc7 Be5 15.Bc6+ Rxc6 16.Rxc6 Kd7
+/= (0.49) Depth: 1/9 00:00:00
+- (5.00) Depth: 21/68 00:04:59 1710mN
1.Rg2 Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Ke4 Bg7 5.Rc7 Bb2 6.Kf4 Kh8 7.Kf5 Ra8 8.Bf7 Kh7 9.Ng5+ Kh6 10.Rc6+ Kg7 11.Rg6+ Kh8 12.Rh6+ Kg7 13.Rh7+ Kf8 14.Ne6+ Ke7 15.Be8+ Kxe8 16.Nc7+ Kf8
+- (5.27) Depth: 22/68 00:05:56 2079mN
1.Bg6+ Kg8 2.Rc4 Bf8 3.Rc7 Bd6 4.Rg7+ Kh8 5.Rh7+ Kg8 6.Ke4 Ba3 7.Rd7 Bb2 8.Bf7+ Kh7 9.Ng5+ Kg7 10.Kf5 Rb5+ 11.Bd5+ Kf8 12.Kg6 Ke8 13.Bc6 Rb6 14.Rc7+ Rxc6+ 15.Rxc6 Kd7 16.Rc4 Be5
+- (5.31) Depth: 22/68 00:06:04 2131mN
1.Rg2 Rb4 2.Bg6+ Kg8 3.Rc2 Rb8 4.Rc7 Bf8 5.Kg4 Bd6 6.Rd7 Bf8 7.Kf5 Bh6 8.Bf7+ Kh7 9.Rd3 Rb5+ 10.Kf6 Rb8 11.Rh3 Rb6 12.Bg6+ Kg8 13.Rxh6 Rxe6+ 14.Kxe6 Kg7 15.Rh1 Kxg6 16.Rg1+ Kh5
+- (5.51) Depth: 22/68 00:06:36 2341mN
+- (5.76) Depth: 23/68 00:07:39 2738mN
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
__________________________________________________________________
Ted Summers
-
rightrook
- Posts: 1452
- Joined: Wed Mar 08, 2006 8:45 pm
Re: Tough test position
Hi.....Junior 5 finds Rg2 in 1 sec.... 
Junior 10 plays Bg6+.....etc.
regards
Robert
Junior 10 plays Bg6+.....etc.
regards
Robert
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M ANSARI
- Posts: 3707
- Joined: Thu Mar 16, 2006 7:10 pm
Re: Tough test position
It is not that it finds the move ... it is the jump in score that shows that it is totally winning. Like an evaluation jump from say +.30 to +5.00 or greater.
-
kgburcham
- Posts: 2016
- Joined: Sun Feb 17, 2008 4:19 pm
Re: Tough test position
[D] 1r6/5B1k/4N2b/8/6R1/5K2/8/8 w - -
Deep Sjeng 3.0
Hash 1024
19/51 0:35 +1.01++ 1.Bg6+ (182.677.331) 5091
19/51 0:48 +5.91 1.Bg6+ Kg8 (243.652.317) 5024
20/55 0:56 +5.91 1.Bg6+ Kg8 (278.076.719) 4957
21/55 1:14 +5.91 1.Bg6+ Kg8 (358.863.571) 4844
22/58 1:52 +6.13 1.Bg6+ Kg8 (535.006.966) 4770
Deep Sjeng 3.0
Hash 1024
19/51 0:35 +1.01++ 1.Bg6+ (182.677.331) 5091
19/51 0:48 +5.91 1.Bg6+ Kg8 (243.652.317) 5024
20/55 0:56 +5.91 1.Bg6+ Kg8 (278.076.719) 4957
21/55 1:14 +5.91 1.Bg6+ Kg8 (358.863.571) 4844
22/58 1:52 +6.13 1.Bg6+ Kg8 (535.006.966) 4770