test position (carlsen-jakowenko 7/2/2009)

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yanquis1972
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Joined: Wed Jun 03, 2009 12:14 am

test position (carlsen-jakowenko 7/2/2009)

Post by yanquis1972 »

[d]8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - - 1 44

FEN: 8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - - 1 44

carlsen here played Ne5! winning.
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bob
Posts: 20943
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Location: Birmingham, AL

Re: test position (carlsen-jakowenko 7/2/2009)

Post by bob »

yanquis1972 wrote:[d]8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - - 1 44

FEN: 8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - - 1 44

carlsen here played Ne5! winning.
Way too easy for today's programs. Crafty finds this in milliseconds. Score > 2.0
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yanquis1972
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Joined: Wed Jun 03, 2009 12:14 am

Re: test position (carlsen-jakowenko 7/2/2009)

Post by yanquis1972 »

i shouldve been more clear, as from what i can tell, many engines prefer Ne7 which is not as decisive. naum is the only engine i've tried that really understands this position more or less immediately. +3.90 for Ne5, +1.06 for Ne7.
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Eelco de Groot
Posts: 4669
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: test position (carlsen-jakowenko 7/2/2009)

Post by Eelco de Groot »

Well, Ancalagon does clearly prefer to play Ne7, so it is not so clearcut for me that Ne5 would be the best, even though Magnus Carlsen played this or Crafty finds it in milliseconds :P . Maybe tablebases play a role?


[d]8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - -

Engine: Ancalagon 1.3 WS180 Build 169 (256 MB)
by Romstad, Costalba, Kiiski, de Groot

2.00 0:00 +0.68 1.h7 Kg7 2.Ne5 Bb5 (2.660) 8

2.00 0:00 +0.86 1.Kf4 Kg6 2.Ne5+ Kxh6 3.Nxf7+ Kg6
4.Ne5+ Kf6 (9.581) 27

2.00 0:00 +0.86 1.Ne7 (21.508) 59

2.00 0:00 +0.87 1.Ne5 (21.846) 60

3.00 0:00 +2.15 1.Ne5 Bh3 2.Kf4 (22.841) 63

4.00 0:00 +1.98 1.Ne5 Bb5 2.Kd4 Ba4 3.Kd5 (67.118) 164

5.00 0:00 +1.98 1.Ne5 Bb5 2.Kd4 Ba4 3.Kd5 (86.711) 205

6.00 0:00 +1.39 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 (153.884) 317

7.00 0:00 +1.39 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 (270.703) 468

8.00 0:00 +1.25 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 Bb5 (496.029) 661

9.01 0:01 +1.21 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 Bb5
5.a4 (1.141.735) 869

9.02 0:01 +1.22 1.Ne7 (1.543.511) 914

10.01 0:02 +1.42 1.Ne7 (3.046.262) 1047

11.01 0:03 +1.27 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.a4 Kxh7 7.Nd5 (3.570.167) 1077

12.01 0:05 +1.41 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Be2 6.Kb6 f5 7.h7 Kxh7 8.Nxa6 (7.376.599) 1255

13.01 0:10 +1.78 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Be2 6.Kb6 f5 7.h7 Kxh7 8.a4 f4
9.Nxa6 (14.170.022) 1314

14.01 0:19 +1.60 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.a4 Kxh7 7.Nd5 Kg7 8.b5 axb5
9.axb5 (28.674.808) 1465

15.01 0:32 +1.62 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.Nd5 Kxh7 7.a4 Kg7 8.b5 axb5
9.axb5 Bf5 (47.460.013) 1478

16.01 0:55 +1.84 1.Ne7 (84.936.092) 1519

17.01 1:09 +2.13 1.Ne7 Bb5 2.Kd4 c6 3.Kc5 Ba4 4.Kb6 Bb5
5.Ka5 Bd3 6.Nxc6 Kg5 7.Ne5 Be4
8.Kxa6 f6 9.Nf7+ Kg6 10.Nd6 (103.959.518) 1493

18.01 2:31 +2.25 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.a4 Kxh7 7.b5 axb5
8.axb5 Bb7 9.Ne8 Ba8 10.b6 Kg6
11.Nd6 Kf6 (220.152.316) 1457

19.01 5:13 +2.39 1.Ne7 Bb5 2.Kd4 c6 3.Kc5 Ba4 4.Kb6 Bb5
5.Ka5 Be2 6.a4 Bf1 7.Kb6 Be2 8.Nxc6 Kg6
9.Nb8 f5 10.Nxa6 Kxh6 (438.807.803) 1398

20.01 8:29 +2.52 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7
5.Kd4 c6 6.Kc5 Bh3 7.Kxc6 Bg2+ 8.Kc5 Be4
9.Nd5+ Kg5 10.a4 Kxh6 11.b5 axb5
12.axb5 f5 13.b6 Kg7 (710.197.383) 1394

21.01 16:08 +2.94 1.Ne7 (1.303.983.447) 1347

22.01 18:44 +3.27 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7
5.Kd4 Bb5 6.Nd5+ Kg6 7.Nxc7 Bf1 8.a4 f5
9.a5 f4 10.b5 axb5 11.a6 Bg2 12.a7 Bb7
13.Nxb5 Kxh6 14.Nd6 (1.494.010.797) 1328

23.01 57:32 +3.17 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7
5.Kd4 Bb5 6.Nd5+ Kg6 7.Nxc7 Bf1 8.a4 f5
9.Ke5 Kxh6 10.a5 Kg6 11.b5 f4 12.b6 Bg2
13.Ne6 Kf7 14.Nxf4 (4.095.878.845) 1186

24.01 167:28 +3.45 1.Ne7 (7.479.856.086) 744

best move: Nc6-e7 time: 171:53.609 min n/s: 735.644 nodes: 7.587.120.386


Eelco
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Will Singleton
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Re: test position (carlsen-jakowenko 7/2/2009)

Post by Will Singleton »

Looks like Naum might be in error here. What's the winning line?
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Eelco de Groot
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Full name:   Eelco de Groot

Re: test position (carlsen-jakowenko 7/2/2009)

Post by Eelco de Groot »

Will Singleton wrote:Looks like Naum might be in error here. What's the winning line?
I think that Naum maybe saw a tablebase win? I have not tested it though. For Glaurung and derivatives it probably makes little distinction which move is chosen because they do not use tablebases or bitbases. For instance, with a small change in the handling of threatmoves in the next build, the search seemed to get more pessimistic and Ancalagon switched from Ne7 to Ne5 with a comparably high eval as for Ne7:


Build 170


8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - -

Engine: Ancalagon 1.3 WS180 Build 170 (256 MB)
by Romstad, Costalba, Kiiski, de Groot

2.00 0:00 +0.68 1.h7 Kg7 2.Ne5 Bb5 (2.561) 10

2.00 0:00 +0.86 1.Kf4 Kg6 2.Ne5+ Kxh6 3.Nxf7+ Kg6
4.Ne5+ Kf6 (9.494) 40

2.00 0:00 +0.86 1.Ne7 (21.431) 85

2.00 0:00 +0.87 1.Ne5 (21.769) 87

3.00 0:00 +2.15 1.Ne5 Bh3 2.Kf4 (22.752) 91

4.00 0:00 +1.98 1.Ne5 Bb5 2.Kd4 Ba4 3.Kd5 (66.209) 222

5.00 0:00 +1.98 1.Ne5 Bb5 2.Kd4 Ba4 3.Kd5 (85.647) 273

6.00 0:00 +1.39 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 (149.040) 397

7.00 0:00 +1.39 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 (281.341) 599

8.00 0:00 +1.25 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 Bb5 (499.008) 778

9.01 0:01 +1.21 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 Bb5
5.a4 (1.161.448) 977

10.01 0:01 +1.00 1.Ne5 Bb5 (2.382.190) 1209

10.05 0:02 +1.31 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 Bf1 4.a4 Bd3
5.Kd4 Bc2 6.Nd5+ Kg6 (3.424.250) 1288

11.01 0:03 +1.54 1.Ne7 (4.662.184) 1314

12.01 0:05 +1.49 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Bd3 6.Kb6 Kxh6 7.Nxa6 (7.413.566) 1278

13.01 0:13 +1.49 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Be2 6.Kb6 f5 7.Nxa6 f4 8.Nc5 Kxh6 (18.069.822) 1380

14.01 0:21 +1.78 1.Ne7 (30.626.710) 1415

15.01 0:24 +1.84 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.a4 Kxh7 7.b5 axb5
8.axb5 Kg6 9.Nd5 Bb7 (35.553.190) 1425

16.01 0:46 +1.96 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.a4 Kxh7 7.Nxa6 Bxa6
8.b5 Bc8 9.a5 Kg7 10.a6 Kf6 11.Kc5 (69.715.246) 1504

17.01 1:23 +1.98 1.Ne7 Bb5 2.Kd4 c6 3.Kc5 Ba4 4.Kb6 Bb5
5.Ka5 Bd3 6.Nxc6 Be4 7.Nb8 Kg6
8.Nxa6 Kxh6 9.b5 (127.296.518) 1527

18.01 2:23 +2.17 1.Ne7 (222.365.474) 1552

19.01 2:55 +2.07 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Be2 6.a4 f5 7.a5 f4 8.Kd4 f3
9.Ke3 Bc4 10.Kxf3 Kh7 11.b5 axb5
12.a6 Kxh6 (269.145.987) 1532

20.01 7:58 +2.35 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Bf1 6.a4 f5 7.a5 f4 8.Kd4 Kxh6
9.b5 axb5 10.a6 Bg2 11.a7 Bc6
12.Nxb5 Kg6 13.Kc5 (671.849.119) 1403

21.01 14:44 +2.17 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Be2 6.a4 f5 7.a5 f4 8.Kd4 Kxh6
9.b5 axb5 10.a6 Bf3 11.a7 Bb7
12.Nxb5 Kg6 13.Nc7 Kf5 (1.223.698.732) 1383

21.08 42:01 +2.68 1.Ne5 Bg2 2.Kd4 Bb7 3.h7 Kg7 4.Nxf7 Kxh7
5.Kc5 Kg7 6.Nd8 Bc8 7.Kc6 Kf6 8.Kxc7 Bf5
9.Kb6 Ke7 10.Nb7 Ke6 11.Nc5+ Kd5
12.Kxa6 Kc4 13.Kb6 Bg6 (3.253.219.609) 1290

22.01 55:18 +2.74 1.Ne5 Bg2 2.Kd4 Bb7 3.h7 Kg7 4.Nxf7 Kxh7
5.Kc5 Kg7 6.Nd8 Bc8 7.Kc6 Kf6 8.Kxc7 Bf5
9.Kb6 Ke7 10.Nb7 Ke6 11.Nc5+ Kd5
12.Kxa6 Bg4 13.Kb6 Kc4 (4.250.785.030) 1280

23.01 86:45 +2.94 1.Ne5 Bg2 2.Kd4 Bb7 3.h7 Kg7 4.Nxf7 Kxh7
5.Ng5+ Kg6 6.Ne6 c6 7.Nc5 Bc8 8.Ke5 Kg5
9.Kd6 Kf4 10.Kxc6 Ke3 11.a4 Kd4
12.Kb6 Kc4 13.Nxa6 Kb3 (6.527.343.534) 1253

24.01 158:18 +3.39 1.Ne5 (11.570.959.981) 1218

25.01 209:24 +3.43 1.Ne5 Bb5 2.Kd4 Ba4 3.h7 Kg7 4.Nxf7 Kxh7
5.Ng5+ Kg6 6.Ne6 c6 7.Nc5 Bb5 8.a4 Be2
9.Ke5 Bd1 10.Kd6 Kf7 11.Kxc6 Ke7
12.Kb6 Kd6 13.a5 Bf3 14.Kxa6 (15.125.496.190) 1203

best move: Nc6-e5 time: 250:28.531 min n/s: 1.191.652 nodes: 17.908.770.202

Build 171 has again a small change in whether to return a fail low score after a failed null move or instead to try to extend, or not reduce, the present node, the change was not related to the testposition at all but again picking Ne7. I liked in this build that the score seemed to go up a bit faster, it is not very specific about threatmoves but because I have not yet figured out how to return several cases from the boolean function ok_to_prune(), to make it more specific, being lazy I did not make a new ok_to_prune function yet so this is now the default version:


Build 171


8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - -

Engine: Ancalagon 1.3 WS180 Build 171 (256 MB)
by Romstad, Costalba, Kiiski, de Groot

2.00 0:00 +0.68 1.h7 Kg7 2.Ne5 Bb5 (2.936) 13

2.00 0:00 +0.86 1.Kf4 Kg6 2.Ne5+ Kxh6 3.Nxf7+ Kg6
4.Ne5+ Kf6 (9.900) 45

2.00 0:00 +0.86 1.Ne7 (21.802) 93

2.00 0:00 +0.87 1.Ne5 (22.140) 94

3.00 0:00 +2.15 1.Ne5 Bh3 2.Kf4 (23.061) 98

4.00 0:00 +1.98 1.Ne5 Bb5 2.Kd4 Ba4 3.Kd5 (68.357) 243

5.00 0:00 +1.98 1.Ne5 Bb5 2.Kd4 Ba4 3.Kd5 (87.797) 296

6.00 0:00 +1.39 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 (147.730) 411

7.00 0:00 +1.39 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 (319.496) 638

8.00 0:00 +1.25 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 Bb5 (540.561) 805

9.00 0:01 +1.21 1.Ne5 Bb5 2.Kd4 Ba4 3.Nd3 Kg6 4.Nc5 Bb5
5.a4 (1.005.617) 975

10.01 0:01 +1.00 1.Ne5 Bb5 (2.336.804) 1216

10.10 0:03 +1.27 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.Nd5 Kxh7 (3.954.175) 1304

11.01 0:03 +1.47 1.Ne7 (4.454.553) 1314

12.01 0:04 +1.60 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Be6 4.Nd5+ Kg6
5.Nxc7 Bc8 6.Kb6 f5 7.h7 Kxh7 8.Nxa6 (5.724.033) 1294

13.01 0:10 +1.54 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6
4.Nxc7 Bc8 5.Nxa6 Bxa6 6.a4 Be2 7.b5 f5
8.b6 Ba6 9.a5 Kxh6 (16.139.815) 1486

14.01 0:16 +1.68 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6
4.Nxc7 Bc8 5.a4 Kxh6 6.Nxa6 Bxa6
7.b5 Bc8 8.a5 Kg5 9.a6 Kf4 (25.499.590) 1504

15.01 0:32 +1.78 1.Ne7 Bb5 2.Kd4 c6 3.Kc5 Be2 4.a4 Bd1
5.a5 Be2 6.Nxc6 Kg6 7.Nd4 Bd3 8.b5 Kxh6
9.bxa6 Bxa6 (50.343.078) 1528

16.01 0:50 +2.07 1.Ne7 Bb5 2.Kd4 c6 3.Kc5 Ba4 4.Kb6 Bb5
5.Ka5 Bf1 6.a4 Be2 7.Nxc6 Kg6 8.Nb8 f5
9.Nxa6 Kxh6 (79.244.590) 1562

17.01 1:35 +2.15 1.Ne7 Bb5 2.Kd4 c6 3.Kc5 Ba4 4.Kb6 Bb5
5.Ka5 Bf1 6.a4 Be2 7.Nxc6 Kg6 8.Nb8 f5
9.h7 Kxh7 10.Nxa6 (150.335.784) 1567

18.01 2:44 +2.13 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.h7 Kg7
5.Nxc7 Bc8 6.a4 Kxh7 7.Ne8 Kg6 8.b5 axb5
9.axb5 Bb7 10.b6 Bc6 11.Ke5 Kg5
12.Nd6 f6+ 13.Kd4 (258.041.205) 1568

19.01 5:01 +2.33 1.Ne7 (461.195.083) 1529

20.01 5:38 +2.45 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6
5.Nxc7 Bf1 6.a4 Kxh6 7.a5 f5 8.b5 f4
9.Kd4 axb5 10.a6 Bg2 11.a7 Bc6
12.Ne6 f3 13.Ke3 (513.280.865) 1517

21.01 14:25 +3.00 1.Ne7 (1.225.480.051) 1416

22.01 18:55 +3.31 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 c6
5.Nxc6 Kg6 6.Ne5+ Kxh6 7.Nxf7+ Kg7
8.Nd6 Bd7 9.Kb6 Kf6 10.Ne4+ Ke5
11.Nc5 Be8 12.a4 Kd4 13.a5 Bb5
14.Nxa6 (1.535.081.341) 1351

23.01 67:24 +3.45 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7
5.Kd4 Bb5 6.Nd5+ Kg6 7.Nxc7 Be2 8.a4 f5
9.a5 f4 10.h7 Kxh7 11.Ke4 Bf1
12.Kxf4 Kg7 13.b5 axb5 14.a6 (4.584.293.430) 1133

24.01 115:01 +3.96 1.Ne7 (7.363.262.784) 1066

25.01 166:36 +3.92 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7
5.Kd4 Bb5 6.Nd5+ Kg6 7.Nxc7 Bf1 8.a4 f5
9.Ke5 Kxh6 10.a5 Kg6 11.b5 f4 12.b6 Bg2
13.Kxf4 Bb7 14.Ne6 (10.444.873.978) 1044

best move: Nc6-e7 time: 181:15.203 min n/s: 1.045.526 nodes: 11.370.300.197

Code: Select all

            // The null move failed low, which means that we may be faced with
            // some kind of threat. If the previous move was reduced, check if
            // the move that refuted the null move was somehow connected to the
            // move which was reduced. If a connection is found, return a fail
            // low score (which will cause the reduced move to fail high in the
            // parent node, which will trigger a re-search with full depth).
            if (nullValue == value_mated_in(ply + 2))
                mateThreat = true;

            ss[ply].threatMove = ss[ply + 1].currentMove;
            if (   depth < ThreatDepth /*|| depth < ThreatDepth + 2*OnePly*/ 
                && ss[ply - 1].reduction)
			{
                if (   nullValue < beta  - 0x50
					&& connected_moves(pos, ss[ply - 1].currentMove, ss[ply].threatMove)) return beta - 1;
				else threatreplyExtension = true;
			}
        }
    }
By way of comment to the changes:

Code: Select all

// threatreplyExtension is not really an extension but at the moment
// - being too lazy to make a real extension - only insures that all replies
// to be generated next in the move loop will  
// be searched to full depth, previous depth minus OnePly.
// Given the heavy amount of pruning in the 
// nullwindow searches especially in Stockfish(*) I believe,
// this is already fairly costly. But it is limited in above code by 
// the further condition that the previous move has to be reduced and 
// furthermore, it is only done near the tips or more precisely 
// in any search shorter than ThreatDepth 
// (*): Compared to standard razoring by jumping into qsearch,
// which one well-known programmer called "insane", the "Stock" pruning
// is much more severe, it can simply cut off search...
//  Anthony Cozzie would declare these Stockfish programmers and Tord 
//  totally crazy :lol:
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: test position (carlsen-jakowenko 7/2/2009)

Post by kgburcham »

[d] 8/2p2p2/p1N2k1P/8/1P6/P3K3/8/5b2 w - - 0 1

Zappa Mexico II:

1.Ne5 Bb5 2.Kd4 Ba4 3.h7 Kg7 4.Nxf7 Kxh7 5.Ng5+ Kg6 6.Ne6 c6 7.Nc7 Bb5 8.Nxb5 cxb5
+- (1.56) Depth: 12/28 00:00:01 2780kN, tb=1
1.Ne5 Bb5 2.Kd4 Ba4 3.h7 Kg7 4.Nxf7 Kxh7 5.Ng5+ Kg6 6.Ne6 c6 7.Nc7 Bb5 8.Nxb5 cxb5
+- (1.56) Depth: 13/28 00:00:01 3345kN, tb=1
1.Ne5 Bb5 2.Kd4 Ba4 3.h7 Kg7 4.Nxf7 Kxh7 5.Ng5+ Kg6 6.Ne6 c6 7.Nc7 Bb5 8.Nxb5 cxb5 9.Ke5 Kf7
+- (1.50) Depth: 14/30 00:00:02 6742kN, tb=3
1.Ne7 Bb5 2.Ke4 Ba4 3.Nd5+ Kg6 4.Nxc7 Bc6+ 5.Kd4 Bb7 6.Ke5 Bc8 7.Kd6 Kxh6
+- (1.77) Depth: 14/30 00:00:04 16382kN, tb=9
1.Ne7 Bb5 2.Ke4 Ba4 3.Nd5+ Kg6 4.Nxc7 Bc6+ 5.Ke5 Bb7 6.Ne8 Bf3 7.Nd6 f6+ 8.Kf4 Bc6 9.Ne4 Kxh6 10.Nxf6
+- (1.73) Depth: 15/39 00:00:05 22131kN, tb=36
1.Ne7 Bb5 2.Ke4 Ba4 3.Nd5+ Kg6 4.Nxc7 Bc6+ 5.Ke5 Bb7 6.Ne8 Bf3 7.Nd6 f6+ 8.Kf4 Bc6 9.Ne4 Kxh6 10.Nxf6
+- (1.73) Depth: 16/39 00:00:09 37541kN, tb=130
1.Ne5 Bg2 2.Kd4 Bh1 3.Nd7+ Kg6 4.Nc5 Kxh6 5.Nxa6 c6 6.Ke5 Kg5 7.a4 Bd5 8.Nc5
+- (1.89) Depth: 16/39 00:00:15 62788kN, tb=256
1.Ne5 Bg2 2.Kd4 Bh1 3.Nd7+ Kg6 4.Nc5 Kxh6 5.Nxa6 c6 6.a4 Bf3 7.Nc5 Kg5 8.a5 Be2 9.Nd3
+- (2.41) Depth: 17/42 00:00:27 111mN, tb=1224
1.Ne5 Bg2 2.Kd4 Bh1 3.Nd7+ Kg6 4.Nc5 Kxh6 5.Nxa6 Kg5 6.Nxc7 f5 7.Ne6+ Kf6 8.Nc5 Bc6 9.a4 Kg5 10.b5 Be8 11.Ne6+
+- (2.75) Depth: 18/48 00:00:58 240mN, tb=5005
1.Ne5 Bg2 2.Kd4 Bh1 3.Nd7+ Kg6 4.Nc5 a5 5.bxa5 Kxh6 6.a6 Kg5 7.a7 Bc6 8.Ke5 f6+ 9.Ke6 f5 10.Ke5 Kg4 11.Ne6
+- (3.33) Depth: 19/53 00:02:46 704mN, tb=30300
1.Ne5 Bg2 2.Kd4 Bh1 3.Nd7+ Kg6 4.Nc5 a5 5.bxa5 Kxh6 6.a6 Kg5 7.a7 Kf5 8.a4 Bf3 9.a5 Bh1 10.Na6 Ke6 11.Nxc7+ Kd6 12.a8Q
+- (3.72) Depth: 20/59 00:08:03 2413mN, tb=70903
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Spock

Re: test position (carlsen-jakowenko 7/2/2009)

Post by Spock »

Deep Shredder 11 gives a very positive score for Ne7

15/25 0:01 +1.98 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc3 Ba4 4.Kc4 Bc2 5.Nd5+ Kg6 6.Nxc7 Kxh6 7.Nxa6 f5 8.Nc5 f4 9.a4 f3 10.Kd5 (4.973.759) 3502 TB:4 SB:21.299
16/26 0:01 +2.17 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc3 Ba4 4.Kc4 Bc2 5.Nd5+ Kg6 6.Nxc7 Kxh6 7.Nxa6 f5 8.Kc3 Bd3 (6.077.625) 3572 TB:11 SB:24.578
17/30 0:02 +2.13 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc3 Bd7 4.Kc4 Be6+ 5.Kd4 (7.341.119) 3619 TB:33 SB:30.283
18/27 0:02 +2.11 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc3 Bd7 4.Kc4 Be6+ 5.Kc5 Bg4 6.a4 Bd7 7.a5 Bb5 8.Nd5+ Kg6 9.Nxc7 Be2 10.b5 axb5 11.a6 Kxh6 (9.135.921) 3613 TB:71 SB:38.149
19/30 0:04 +2.02 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 Ba4 4.Kc4 Bc2 5.Nd5+ Kg6 6.Nxc7 f5 7.Kc3 Bb1 8.Nxa6 Kxh6 9.Kb2 Be4 10.Nc5 Bc6 11.a4 (14.352.794) 3538 TB:266 SB:68.134
20/33 0:06 +2.00 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 Ba4 4.Kc4 Bd7 5.Kc3 Be6 6.Kd4 (22.414.255) 3684 TB:475 SB:109.329
21/34 0:09 +1.86 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 Ba4 4.Kc4 Bd7 5.Kc3 Be6 6.Kd4 (34.357.675) 3790 TB:827 SB:172.640
22/51 6:17 +2.86 1.Ne7 Bb5 2.Kd4 (1.658.661.256) 4396 TB:22.824 SB:26.451.695
23/48 6:49 +2.86 1.Ne7 Bb5 (1.805.161.575) 4409 TB:23.319 SB:28.780.860
24/43 6:57 +2.86 1.Ne7 Bb5 (1.842.141.764) 4410 TB:25.080 SB:29.054.232
25/50 9:37 +3.00 1.Ne7 Bb5 (2.524.516.563) 4374 TB:60.654 SB:40.157.316
26/37 10:00 +3.35 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7 5.Kd4 c6 6.Kc5 (2.631.164.671) 4380 TB:70.751 SB:40.683.831
27/39 10:04 +3.35 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bb5+ 4.Kc5 Bd7 5.Kd4 c6 6.Kc5 (2.651.762.889) 4385 TB:71.113 SB:40.774.337
28/49 11:40 +3.45 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 Bh5 (2.987.901.206) 4268 TB:123.690 SB:45.628.730
29/47 13:19 +3.55 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 c6 6.Kc5 Bh5 7.Nxc6 Kg6 8.Kb6 Be2 9.Ne5+ Kxh6 10.Nxf7+ Kg6 11.Ne5+ Kf5 12.Nd7 Ke4 13.a4 Kd4 14.Nc5 (3.344.255.375) 4182 TB:197.467 SB:52.156.412
30/54 16:19 +3.59 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 c6 6.Kc5 Bh5 7.Nxc6 Kg6 8.Kb6 Be2 9.Ne5+ Kxh6 10.Nxf7+ Kg6 11.Nd6 Kf6 12.Ne8+ Ke5 13.Kc5 Bg4 14.Nc7 (3.989.692.091) 4071 TB:336.703 SB:67.848.775
31/55 23:02 +3.60 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 c6 6.Kc5 Bh5 7.Nxc6 Kg6 8.Kb6 Be2 9.Ne5+ Kxh6 10.Nxf7+ Kg6 11.Nd6 Kf6 12.Ne8+ Ke5 13.Kc5 Bg4 14.Nc7 (5.562.839.795) 4024 TB:643.800 SB:109.224.192
32/65 57:59 +4.34 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 c6 6.Kc5 Bh5 7.Kxc6 (14.927.466.067) 4289 TB:1.461.235 SB:310.558.808
33/64 87:15 +4.58 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 c6 6.Kc5 Bh5 7.Kxc6 Ke6 (22.774.756.016) 4350 TB:3.204.399 SB:534.533.544
34/61 133:52 +4.83 1.Ne7 Bb5 (35.779.460.854) 4454 TB:6.033.337 SB:928.515.158
35/60 178:36 +4.82 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc4 Bg4 4.Kc5 Bd1 5.Kd4 c6 6.Kc5 Ba4 (47.097.426.827) 4394 TB:9.344.461 SB:1.420.462.843
Last edited by Spock on Sat Jul 04, 2009 3:52 pm, edited 1 time in total.
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Spock

Re: test position (carlsen-jakowenko 7/2/2009)

Post by Spock »

Rybka 3 MP x64 starts at Ne7 and moves onto Ne5

12.01 0:00 +1.46 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 c6 4.Nxc6 Kg6 5.Ne5+ Kxh6 6.Nxf7+ Kh5 7.Nd6 (126.921) 151
13.01 0:00 +1.49 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 c6 4.Nxc6 Kg6 5.Ne5+ Kxh6 6.Nxf7+ Kh5 7.Nd6 Bf1 8.a4 Kg4 (139.886) 150
14.01 0:01 +1.69++ 1.Ne7 (220.400) 149 TB:1
14.01 0:02 +1.29 1.Ne7 Bc4 2.Kd4 Bb5 3.Kc5 Bd7 4.Nd5+ Kg6 5.h7 Kg7 6.Kd4 Bc8 (312.659) 149 TB:5
15.01 0:02 +1.49++ 1.Ne7 (344.481) 148 TB:5
15.01 0:03 +1.69++ 1.Ne7 (454.026) 143 TB:7
15.01 0:04 +2.09++ 1.Ne7 (553.890) 136 TB:16
15.01 0:07 +1.61 1.Ne7 Bb5 2.Kd4 (919.289) 134 TB:58
16.01 0:07 +1.61 1.Ne7 Bb5 2.Kd4 (930.553) 134 TB:58
17.01 0:07 +1.65 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6 5.Nxc7 Be2 6.Kd4 Kxh6 (1.033.297) 136 TB:59
18.01 0:08 +1.65 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6 5.Nxc7 Be2 6.Kd4 Kxh6 (1.074.712) 136 TB:60
19.01 0:08 +1.65 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6 5.Nxc7 Be2 6.Kd4 Kxh6 7.a4 Kg5 8.a5 Kf5 9.b5 axb5 10.a6 Bf3 11.a7 Bb7 12.Nxb5 Ke6 13.Kc5 Kd7 14.Kb6 (1.148.332) 136 TB:63
20.02 0:22 +1.85++ 1.Ne5 Bb5 (2.936.349) 136 TB:343
20.01 0:25 +2.05++ 1.Ne5 Bb5 (3.304.102) 132 TB:408
20.01 0:32 +2.45++ 1.Ne5 Bb5 (3.995.818) 124 TB:583
20.01 0:51 +3.11 1.Ne5 Bb5 2.Kd4 Ba4 3.h7 Kg7 4.Nxf7 Kxh7 5.Ng5+ Kg6 6.Ne6 c6 7.Kc5 Kf5 8.Kd6 Bd1 9.Nc5 Be2 10.Kxc6 Ke5 11.Kb6 Kd4 12.Nxa6 Kc4 (5.929.826) 117 TB:1.142
21.01 1:01 +3.11 1.Ne5 Bb5 2.Kd4 Ba4 3.h7 Kg7 4.Nxf7 Kxh7 5.Ng5+ Kg6 6.Ne6 c6 7.Kc5 Kf5 8.Kd6 Bd1 9.Nc5 Be2 10.Kxc6 Ke5 11.Kb6 Kd4 12.Nxa6 Kc4 (6.890.650) 115 TB:1.588
22.01 1:21 +3.11 1.Ne5 Bg2 2.Kd4 (8.830.053) 111 TB:2.760
23.01 2:04 +3.31++ 1.Ne5 (13.268.900) 108 TB:5.099
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Spock

Re: test position (carlsen-jakowenko 7/2/2009)

Post by Spock »

Hiarcs 12.1 MP

14/26 0:00 +1.21 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bb5 5.Nxc7 Bc4 6.a4 Kxh6 7.Kf6 Kh5 8.b5 axb5 (1.052.117) 1977 TB:2
15/27 0:00 +1.18 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bb5 5.Nxc7 Bd3 6.Ne8 Kxh6 7.Kf6 Kh5 8.Nd6 Kg4 9.Kxf7 (1.392.907) 1977 TB:29
16/28 0:00 +1.19 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bb5 5.Nxc7 Bd3 6.Ne8 Bc4 7.Kd4 (1.933.655) 1885 TB:56
17/32 0:01 +1.23 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bb5 5.Nxc7 Be2 6.Ne8 Bb5 7.Nd6 (2.818.783) 2027 TB:126
18/32 0:01 +1.35 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bb5 5.Nxc7 Bf1 6.a4 f6+ 7.Ke4 Kxh6 8.Kf5 Kg7 (4.039.473) 2103 TB:306
19/33 0:02 +1.39 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Kxh6 5.Nxc7 Bc8 6.Kf6 (5.662.141) 2180 TB:697
20/37 0:03 +1.39 1.Ne7 Bb5 2.Kd4 Bd7 3.Kc5 Bb5 4.Nd5+ Kg6 5.Nxc7 Be2 (8.961.511) 2358 TB:1.454
21/42 0:08 +1.52 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Kxh6 5.Nxc7 Bc8 6.Kf6 (22.348.028) 2523 TB:5.656
22/42 0:12 +1.47 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bg4 5.Nxc7 Bc8 6.Ne8 Bb7 7.Nd6 Bc6 8.h7 Kxh7 9.Nxf7 Kg6 10.Nd6 Ba4 11.Ne4 Bb3 12.Nc5 (31.258.318) 2569 TB:8.733
23/44 0:21 +1.57 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Kxh6 5.Nxc7 Bc8 6.Kf6 Kh5 7.Kxf7 Kg4 8.Ne6 Bb7 9.Kf6 Bd5 10.a4 Kf3 11.Kf5 Ke3 12.Ke5 Bc4 13.Nc5 Kd2 (54.647.933) 2540 TB:18.796
24/47 0:40 +1.73 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bg4 5.Nxc7 Bc8 6.a4 f6+ 7.Kd6 Kxh6 8.Nxa6 (102.838.524) 2510 TB:36.911
25/52 1:00 +1.60 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bg4 5.Nxc7 Bc8 6.a4 Bb7 7.b5 axb5 8.axb5 Kxh6 9.Kf5 Kh5 10.Na6 Bc8+ 11.Kf6 Bb7 12.Nc5 Ba8 (150.799.779) 2504 TB:64.222
26/53 1:50 +1.64 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bg4 5.Nxc7 Bc8 6.a4 Bb7 7.Kd6 f5 8.Ke5 Bc6 9.a5 Bb7 10.h7 Kg7 11.Kxf5 (276.224.954) 2504 TB:135.577
27/54 3:25 +1.70 1.Ne7 Bb5 2.Kd4 Bd7 3.Nd5+ Kg6 4.Ke5 Bg4 5.Nxc7 Bc8 6.a4 Bb7 7.Kd6 f5 8.Ke5 Bc6 9.a5 Bb7 10.h7 Kxh7 11.Kxf5 Bc8+ 12.Kf6 Bb7 13.Ke5 Kg6 14.Kd6 (506.465.415) 2460 TB:249.617
27/54 4:38 +1.71 1.Ne5 (695.237.436) 2500 TB:358.929
27/54 5:23 +1.89++ 1.Ne5 (819.534.630) 2536 TB:427.533
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