[d]8/pp2qp2/r3p2k/rn1pPp1p/b1pP1P1P/P1P1Q1P1/R1PN2K1/R1B5 b - - 0 1 bm Bxc2
How much time does your program need to find this positional sacrifice?
I have no proof that it is a winning move but
I clearly get fail low for white after Bxc2 so it seems to be a correct sacrifice
The origin of the move is from a very old game from 1888
In The CD total chess training I read the following about a diagram some moves earlier:
"This plan is a logical consequence of the exchange on c3"
[d]8/ppnbqp2/r3p2k/r2pPp1p/2pP1P1P/P1P1Q1P1/RBP3K1/RN6 b - - 0 1
1...Ba4 2.Bc1 Nb5 3.Nd2 Bxc2!!....
Von Gotshall-Tarrasch 1888
The situation with other programs that I tried is even worse than rybka
and other programs seem to be more optimistic for white.
[d]8/pp2qp2/r3p2k/rn1pPp1p/2pP1P1P/P1P1Q1P1/R1bN2K1/R1B5 w - - 0 1
Analysis by Rybka 3 1-cpu 32-bit :
4.Ra2xc2
± (0.93) Depth: 2 00:00:00
4.Ra2xc2
± (0.96) Depth: 3 00:00:00
4.Ra2xc2
± (0.87) Depth: 4 00:00:00
4.Ra2xc2 Nb5xa3
± (1.00) Depth: 5 00:00:00
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1xa3 Qe7xa3 7.Nd2-f3
± (0.95) Depth: 6 00:00:00 1kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-c1 Ra3-a1
± (0.95) Depth: 7 00:00:00 3kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-c1 Ra3-a1 7.Nd2-f3
± (0.92) Depth: 8 00:00:00 4kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a1 7.Rb1-b2 Kh6-g7
± (0.95) Depth: 9 00:00:00 8kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a1 7.Qe3-e1 Ra1-a2 8.Rc2-b2
± (0.95) Depth: 10 00:00:00 13kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a1 7.Rb1-b2 Ra1-d1 8.Nd2-f3 Ra6-a1
± (0.96) Depth: 11 00:00:00 22kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a1 7.Rb1-b2 Ra1-d1 8.Nd2-f3 Ra6-a1 9.Rc2-d2
± (0.95) Depth: 12 00:00:01 34kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a1 7.Rb1-b2 Ra1-d1 8.Nd2-f3 Ra6-a1 9.Rb2-a2 a7-a5
± (0.88) Depth: 13 00:00:02 76kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-c1 Ra6-a4 7.Nd2-b1 Ra3-a2 8.Qe3-f2 Ra2xc2 9.Rc1xc2 Ra4-a1 10.Rc2-c1 a7-a5 11.Qf2-b2
± (0.73) Depth: 14 00:00:07 268kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1xa3 Ra6xa3 7.Qe3-e1 a7-a5 8.Qe1-b1 Kh6-g7 9.Nd2-f3 Qe7-d7 10.Nf3-g5 b7-b5 11.Rc2-b2 a5-a4 12.Rb2-c2 Qd7-e8
± (0.77) Depth: 15 00:00:18 725kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1xa3 Ra6xa3 7.Rc2-b2 a7-a5 8.Nd2-b1 Ra3-a1 9.Qe3-e2 Qe7-c7 10.Rb2-b5 Qc7-c6 11.Qe2-b2 Ra1-a2 12.Qb2xa2 Qc6xb5 13.Nb1-d2 a5-a4 14.Qa2-a3
² (0.67) Depth: 16 00:00:42 1634kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rc2-b2 Ra2xb2 8.Rb1xb2 Ra6-a1 9.Qe3-e2 a7-a5 10.Nd2-b1 Qe7-c7 11.Rb2-b5 Qc7-c6 12.Qe2-b2 Ra1-a2 13.Qb2xa2 Qc6xb5 14.Nb1-d2 a5-a4 15.Qa2-a3 Kh6-g7 16.Kg2-f3
² (0.67) Depth: 17 00:01:28 3610kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rc2-b2 Ra2xb2 8.Rb1xb2 Ra6-a1 9.Qe3-e2 a7-a5 10.Nd2-b1 Qe7-c7 11.Rb2-b5 Qc7-c6 12.Qe2-b2 Ra1-a2 13.Qb2xa2 Qc6xb5 14.Nb1-d2 a5-a4 15.Qa2-a3 Kh6-g7 16.Kg2-f3 Qb5-e8
² (0.68) Depth: 18 00:01:53 4546kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rc2-b2 Ra2xb2 8.Rb1xb2 Ra6-a1 9.Qe3-e2 b7-b6 10.Nd2-b1 Qe7-b7 11.Rb2-b5 Qb7-a6 12.Rb5-b4 Kh6-g6 13.Kg2-f2 b6-b5 14.Kf2-f3 Ra1-a2 15.Rb4-b2
² (0.58) Depth: 19 00:04:04 10013kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rb1-c1 b7-b5 8.Nd2-f3 Ra2xc2+ 9.Rc1xc2 Ra6-a3
² (0.38) Depth: 20 00:22:04 52135kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rb1-c1 b7-b5 8.Nd2-f3 Ra2xc2+ 9.Rc1xc2 Ra6-a3
² (0.38) Depth: 21 00:23:58 56210kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rb1-c1 b7-b5 8.Nd2-f3 Ra2xc2+ 9.Rc1xc2 Ra6-a3
² (0.38) Depth: 22 00:31:57 75029kN
4.Ra2xc2 Nb5xa3 5.Bc1xa3 Ra5xa3 6.Ra1-b1 Ra3-a2 7.Rb1-b2 Ra2xb2 8.Rc2xb2 Ra6-a1
= (0.18) Depth: 23 03:15:25 494664kN
(so k, 29.12.2009)
an hard test position
Moderator: Ras
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Uri Blass
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- Location: Tel-Aviv Israel
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Dann Corbit
- Posts: 12792
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Re: an hard test position
At ply 28 Bxc2 is the second choice for smooth scaling stockfish.
I will post results when analysis is done.
I will post results when analysis is done.
-
Dann Corbit
- Posts: 12792
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Re: an hard test position
30 plies of smooth scaling stockfish does not find it:
I will try both forcing the position and also a longer search.
Code: Select all
Analysis from C:\test\bxc2.epd
12/28/2009 8:57:24 PM Level: 3600 Seconds
Analyzing engine: Stockfish 1.6s
1) Bxc2;
Searching move: Ba4xc2
Best move (Stockfish 1.6s): Nb5-c7
Not found in: 1:00:00
2 00:00 99 282 -0.68 Kh6g6 Nd2f3
2 00:00 133 378 +0.32 Kh6g7 Ra1b1
3 00:00 357 1.014 +0.44 Kh6g7 Ra1b1 f7f6 e5xf6+ Qe7xf6
4 00:00 666 1.892 +0.44 Kh6g7 Ra1b1 f7f6 e5xf6+ Qe7xf6
5 00:00 1.809 5.038 +0.24 Kh6g7 Ra1b1 f7f6 Nd2f3 Ra6c6 e5xf6+ Qe7xf6
6 00:00 4.548 12.528 +0.24 Kh6g7 Nd2f3 f7f6 Ra1b1 Ra6c6 e5xf6+ Qe7xf6
7 00:00 7.824 21.377 +0.08 Kh6g7 Nd2f3 Ra6b6 Bc1d2 Rb6c6 Nf3g5 f7f6 e5xf6+ Qe7xf6
8 00:00 26.944 71.850 0.00 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 f7f6 e5xf6 Qe7xf6
9 00:00 39.822 103.703 0.00 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Rc6b6 Rb1b4 Nb5c7 Rb4xb6 a7xb6
10 00:00 104.064 172.577 -0.16 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Rc6b6 Rb1b4 f7f6 e5xf6 Qe7xf6 Bc1d2
11 00:00 270.257 415.141 -0.24 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Qe7f8 Qe3f3 Qf8h6 Bc1d2 Rc6b6 Qf3e2 Nb5c7 Rb1xb6 a7xb6
12 00:00 612.324 828.584 -0.24 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Qe7f8 Qe3f3 Qf8h6 Bc1d2 Rc6b6 Rb1b4 Qh6g6 Qf3e2 a7a6 Ra2b2
13 00:00 1.006.678 1.201.286 -0.24 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Qe7f8 Qe3f3 Qf8h6 Bc1d2 Rc6b6 Rb1b4 Qh6g6 Qf3e2 a7a6 Ra2b2
14 00:00 1.615.487 1.648.456 -0.24 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Qe7f8 Qe3f3 Qf8h6 Bc1d2 Rc6b6 Rb1b4 Qh6g6 Qf3e2 a7a6 Ra2b2
15 00:01 4.790.375 2.610.558 -0.16 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Qe7f8 Rb1b4 a7a6 Ra2b2 b7b6 Qe3f2 f7f6 e5xf6 Qf8xf6 Bc1e3 Rc6c8
16 00:02 6.510.679 2.942.014 -0.08 Kh6g7 Nd2f3 Ra6c6 Ra1b1 Kg7g8 Nf3g5 Qe7f8 Rb1b4 a7a6 Ra2b2 b7b6 Qe3f2 f7f6 e5xf6 Qf8xf6 Bc1e3 Rc6c8
17 00:06 25.146.064 3.940.771 +0.12 Kh6g7 Qe3f3 Ra6b6 Ra2b2 Ra5a6 Nd2f1 f7f6 Qf3xh5 Nb5xc3 Rb2xb6 Ra6xb6 Bc1d2 Nc3e4 Bd2b4 Qe7f7 e5xf6+ Qf7xf6 Nf1e3 Kg7g8
17+ 00:07 29.874.354 3.991.762 +0.16 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Qe3e1 Nb5c7 Rb1a1 Ba4c6 Bc1e3 Nc7b5 a3a4 Nb5c7 Qe1b1 Ra5xa4
18 00:09 38.539.912 4.070.114 +0.12 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Qe3f3 Nb5c7 Ra2b2 Kg7g8 Rb1a1 Ba4d7 Rb2b4 Nc7b5 a3a4 Nb5c7 Bc1a3 Bd7xa4
19 00:11 45.665.889 4.098.168 +0.12 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Qe3f3 Nb5c7 Rb1b4 Qh8h6 Qf3e2 Ba4c6 Bc1b2 Kg7g8 Qe2f3 Nc7b5 a3a4 Nb5c7 Rb4xc4 d5xc4 Qf3xc6
20 00:16 68.941.835 4.201.464 +0.12 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Rb1b4 Nb5c7 Qe3d2 Ba4c6 Bc1b2 Kg7g8 Ra2a1 Qh8h6 Qd2c1 Nc7b5 Ra1a2 Ra5a4 Ra2a1 Ra4xb4 c3xb4
21 00:21 93.640.689 4.323.208 +0.12 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Rb1b4 Nb5c7 Qe3d2 Ba4c6 Bc1b2 Kg7g8 Ra2a1 Qh8h6 Qd2c1 Nc7b5 Ra1a2 Qh6g6 Ra2a1 f7f6 e5xf6 Qg6xf6 Qc1d1
22 00:46 211.233.158 4.513.818 +0.12 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Rb1b4 Nb5c7 Qe3d2 Ba4c6 Bc1b2 Kg7g8 Ra2a1 Qh8h6 Qd2c1 Nc7b5 Ra1a2 Qh6g6 Ra2a1 f7f6 e5xf6 Qg6xf6 Qc1d1
23 01:17 358.101.246 4.595.342 +0.12 Qe7f8 Ra1b1 Qf8h8 Nd2f3 b7b6 Nf3g5 Kh6g7 Rb1b4 Nb5c7 Qe3d2 Ba4c6 Bc1b2 Kg7g8 Ra2a1 Qh8h6 Qd2c1 Nc7b5 Ra1a2 Qh6g6 Ra2a1 f7f6 e5xf6 Qg6xf6 Qc1d1
23 01:55 535.192.135 4.649.882 +0.28 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Ra1b1 Nb5xa3 Rb1b4 Ra4a5 Qf3d1 b7b6 Bc1d2 Qg8g6 Rb4b2 Kh6g7 Ra2a1 Kg7g8
24 02:22 665.616.421 4.673.780 +0.32 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Bc6d7 Qf3e2 Kg7g8 Qe2f3 b7b6 Qf3f2 Bd7c6 Ra1e1 Nb5xa3 Ra2a1 Na3b5
25 03:35 1.019.374.132 4.728.540 +0.44 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Kg7g8 Bb2c1 b7b6 Bc1b2 Ra6a5 Qf3e2 a7a6 Qe2f3 Qg6h6 Ra1e1 Nb5xa3 Qf3e2
26 04:33 1.295.560.032 4.732.414 +0.44 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Kg7g8 Bb2c1 Ra6a5 Bc1b2 Qg6h6 Qf3e2 Ra5a6 Qe2f3 Qh6h8 Qf3e2 Ra4a5 Qe2f3 Qh8h6 Ra1h1 Nb5xa3 Rh1a1 Na3xc2
27 05:59 1.701.480.222 4.733.697 +0.44 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Nb5c7 Qf3e2 Kg7h6 Qe2d1 Qg6g8 Qd1e1 Nc7b5 Qe1e2 Qg8g7 Qe2f1 Qg7f8 Kg2h2 Kh6g7
28 07:32 2.143.557.251 4.741.869 +0.44 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Nb5c7 Qf3e2 Kg7h6 Qe2d1 Qg6g8 Qd1e1 Nc7b5 Qe1e2 Qg8g7 Qe2f1 Qg7f8 Kg2h2 Kh6g7
29 16:21 4.675.321,831 4.761.426 +0.40 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Kg7g8 Bb2c1 Ra6a5 Bc1b2 b7b6 Qf3e2 Ra5a6 Qe2e3 Kg8g7 Qe3c1 Qg6h6 Ra1b1 Kg7g8 Ra2a1
30 22:40 6.479.891,831 4.764.494 +0.40 Nb5c7 Nd2f3 Ba4c6 Nf3g5 Qe7f8 Qe3f3 Qf8g8 Ra2b2 Nc7b5 Rb2a2 Ra5a4 Kg2g1 Qg8g6 Kg1g2 Kh6g7 Bc1b2 Kg7g8 Bb2c1 Ra6a5 Bc1b2 b7b6 Qf3e2 Ra5a6 Qe2e3 Kg8g7 Qe3c1 Qg6h6 Ra1b1 Kg7g8 Ra2a1
12/28/2009 9:24:19 PM, Time for this analysis: 00:26:50, Rated time: 1:00:00
0 of 1 matching moves
12/28/2009 9:24:20 PM, Total time: 12:26:56 AM
Rated time: 1:00:00 = 3600 Seconds
-
Dann Corbit
- Posts: 12792
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Re: an hard test position
After forcing the position, it fails low for a long time but starts to fail high at the end:
Code: Select all
Analysis from C:\test\bxc2.epd
12/28/2009 9:26:56 PM Level: 3600 Seconds
Analyzing engine: Stockfish 1.6s
1) "After move Bxc2 has
Searching move:
Best move (Stockfish 1.6s): Ra2xc2
Not found in: 1:00:00
2 00:00 299 842 +2.86 Ra2xc2 Kh6g6
3 00:00 688 1.932 +3.11 Ra2xc2 Kh6g7 Nd2f3 Nb5xa3
4 00:00 1.078 3.028 +3.07 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6
5 00:00 1.924 3.728 +3.07 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6
6+ 00:00 3.093 5.971 +3.27 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6 Nf3e5
7 00:00 22.099 41.854 +2.66 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2f3 Ra3a1 Rc2b2
8 00:00 41.876 78.126 +2.66 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a1 Rc2b2 Ra1xb1 Rb2xb1 Kh6g7 Qe3e2
9 00:00 78.592 143.154 +2.66 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a1 Rb1b2 Kh6g7 Nd2f3 Ra6a3 Rc2c1 Ra1xc1 Qe3xc1
10- 00:00 117.192 207.787 +2.46 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a1 Rb1b2 Ra1d1 Nd2f3 Ra6a1
11 00:00 154.316 266.062 +2.50 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a1 Rb1b2 Ra1d1 Rb2a2 Ra6xa2 Rc2xa2 a7a6 Nd2f3 Rd1d3 Qe3c1 Kh6g7
12 00:00 415.069 645.519 +2.22 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Rb1b5 Ra3b3 Rc1b1 Rb3xb5 Rb1xb5 b7b6 Rb5b1 Kh6g7 Qe3e2 f7f6 e5xf6+ Qe7xf6
13 00:00 758.324 1.047.408 +2.18 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Qe3e2 Ra3b3 Qe2e1 Rb3xb1 Rc1xb1 b7b6 Kf3g2 Kg7g6 Qe1e2
14 00:00 1.152.719 1.410.916 +2.22 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Rb1b5 b7b6 Rb5b1 f7f6 Rc1e1 Ra2c2 e5xf6+ Qe7xf6
15- 00:01 2.561.616 2.328.741 +2.02 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 b7b5 Qc1b2 Ra1a6 Qb2xb5 Ra6b6
16 00:01 4.903.639 2.844.338 +2.10 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Kf3f2 Kg7g6 Qe3e2 Qe7c7 Qe2d1 Ra3b3 Kf2g2 Kg6g7
17 00:02 8.956.618 3.376.033 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Kf3f2 Kg7g6 Qe3e2 a7a5 Kf2e3 Ra3b3 Qe2d1 Rb3xb1 Rc1xb1 Qe7a3 Qd1c1 Qa3xc1 Rb1xc1 f7f6 Nd2f3
18 00:03 15.901.518 4.032.847 +1.93 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Kf3f2 a7a6 Kf2f1 b7b5 Kf1e2 Qe7e8 Qe3f3 f7f6 e5xf6+ Kg7xf6 Qf3e3 Kf6f7 Ke2f2 a6a5 Qe3e2 Kf7g6 Kf2g2
19 00:08 38.754.659 4.492.772 +1.81 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Rc2b2 a7a5 Nd2f3 Ra3a1 Kg2f2 a5a4 Qe3e2 a4a3 Rb2b5 Kh6g6 Kf2e3 Ra1c1 Qe2d2 Rc1a1 Rb5b6 Kg6g7 Qd2c2 Qe7c7 Rb6b5 a3a2
20 00:13 64.706.003 4.665.513 +1.77 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 b7b5 Qc1b2 Ra1a6 Kg2f2 Kh6g6 Kf2e3 f7f6 e5xf6 Kg6xf6 Nb1d2 b5b4 c3xb4 Ra6b6 b4b5 a7a6 Nd2f3 a6xb5
21+ 00:23 114.724.289 4.928.442 +1.97 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Qe7a3 Rb2b1 b7b5 Rb1xb5 Qa3c1 Rb5b1 Qc1c2 Rb1f1 Ra6a3 Rf1f3 Kh6g7 Kg2h3 Ra3a2 Rf3f2 Qc2c1 Kh3g2 Ra2c2
22 00:25 125.663.007 4.953.212 +1.73 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Qe7a3 Rb2b1 b7b5 Rb1xb5 Qa3c1 Rb5b1 Qc1c2 Rb1f1 Ra6a3 Rf1f3 Kh6g7 Kg2g1 Ra3a1+ Rf3f1 Ra1a3 Nd2b1 Ra3a2 Qe3f2 Kg7g6 Qf2xc2 Ra2xc2 Rf1f2
23 00:43 222.678.111 5.063.167 +1.65 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Qe7a3 Rb2xb7 Qa3c1 Nd2f1 Ra6a2+ Kg2g1 Qc1c2 Qe3f3 Kh6g6 Rb7b8 Qc2d3 Qf3xd3 c4xd3 Rb8b1 Ra2c2 Rb1d1 a7a5 Rd1xd3 a5a4 Rd3d1 Rc2xc3 Kg1f2 f7f6 Rd1b1 a4a3 Kf2e2 f6xe5 f4xe5
24- 01:47 554.702.057 5.140.747 +1.05 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Rc2b2 b7b5 Kg2f2 Qe7b7 Qe3f3 Qb7a6 Kf2g1 Ra3a2 Rb2xa2 Qa6xa2 Nd2f1
25 04:26 1.337.366.894 5.025.937 +1.01 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Rc2b2 b7b5 Kg2f2 Qe7b7 Nd2b1 Ra3a1 Qe3c1 a7a5 Qc1d2 Ra1a4 Qd2c2 Ra4a1 Rb2a2 Ra1xa2 Qc2xa2 Qb7b6 Qa2b2 b5b4 Kf2e2 Kh6g7 Ke2d1 b4b3 Nb1d2 f7f6 Nd2f3 a5a4
26 10:51 3.356.739,829 5.154.368 +0.92 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Rc2b2 b7b5 Nd2b1 Ra3a1 Qe3c1 Qe7b7 Qc1c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 Qb7b6 Kg2f2 b5b4 Qa2b2 Kh6g6 Kf2e2 Qb6b7 Ke2d1 f7f6 Kd1c1 Qb7b6 Qb2d2 Kg6g7 Kc1c2 Kg7g6 e5xf6 Kg6xf6 Qd2e3 a5a4 Nb1d2
27 23:12 7.077.595,775 5.084.023 +0.88 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Rc2b2 b7b5 Nd2b1 Ra3a1 Qe3c1 Qe7b7 Qc1c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 Qb7b6 Kg2f2 b5b4 Qa2b2 Qb6b8 Nb1d2 Qb8f8 Nd2f3 b4b3 Qb2a1 Kh6g6 Qa1xa5 b3b2 Nf3d2 Qf8b8 Nd2b1 Qb8b3 Kf2e3 Qb3d1 Qa5a2 Qd1d3+ Ke3f2
28+ 49:41 14.977.110,100 5.022.719 +1.09 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1
12/28/2009 10:27:01 PM, Time for this analysis: 01:00:00, Rated time: 1:00:00
-
Dann Corbit
- Posts: 12792
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Re: an hard test position
Looks really hard. This is the position after the key move has been forced:
Code: Select all
1) "After move Bxc2 has
Searching move:
Best move (Stockfish 1.6s): Ra2xc2
Not found in: 5:00:00
2 00:00 299 849 +2.86 Ra2xc2 Kh6g6
3 00:00 688 1.949 +3.11 Ra2xc2 Kh6g7 Nd2f3 Nb5xa3
4 00:00 1.078 3.053 +3.07 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6
5 00:00 1.933 5.445 +3.07 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6
6+ 00:00 3.130 8.792 +3.27 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6 Nf3e5
7 00:00 23.691 65.444 +2.70 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1c1 Ra3a2 Nd2f3 Ra2xc2+ Rc1xc2
8 00:02 31.727 11.058 +2.58 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1c1 Ra3a2 Nd2f3 Ra2xc2+ Rc1xc2 Kh6g7 Rc2b2 Ra6a1
9 00:03 55.214 18.156 +2.66 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2f3 Kh6g7 Rc2b2 b7b6 Nf3g5 Ra3b3
10 00:03 138.603 42.477 +2.46 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1e1 Ra3a2 Rc2c1 Kh6g6 Qe3e2 Ra6a3 Re1h1 Kg6g7
11 00:03 195.369 59.418 +2.50 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1e1 Ra3a2 Rc2c1 Kh6g6 Qe3e2 Ra2b2 Rc1b1 Rb2xb1 Re1xb1 Ra6a2 Kg2f2
12 00:04 431.244 92.047 +2.34 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1d1 Ra3a2 Rc2c1 Ra6a3 Rd1e1 Kh6g7 Re1e2 Ra2a1 Nd2f3 Ra1xc1 Qe3xc1
13 00:04 668.374 140.799 +2.22 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1d1 Ra3a2 Rc2c1 Ra6a3 Rd1f1 Kh6g7 Rf1f2 Ra2b2 Nd2f3 Ra3a2 Rf2xb2 Ra2xb2+ Nf3d2
14 00:05 1.846.453 345.648 +2.22 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Qe3e1 Qe7d7 Qe1d1 b7b5 Kf3g2 Ra3b3
15 00:06 2.820.510 410.913 +2.14 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Qc1b2 Qd7a4 Nb1d2 Kh6g7 Nd2f3 a7a5 Rc2d2 b7b5 Nf3g5 Qa4a3
16 00:08 4.407.875 535.716 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Rc2e2 Qd7a4 Re2b2 b7b5 Qc1e1 a7a5 Kg2f2 b5b4 c3xb4 Kh6g6
17 00:08 7.028.646 795.005 +2.06 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Rc2e2 Qd7a4 Re2b2 b7b5 Rb2b4 Ra1a2+ Kg2f3 Qa4a5 Rb4b2 Ra2xb2 Qc1xb2 Kh6g6 Nb1a3 a7a6
18 00:11 16.298.320 1.362.280 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Nf3e1 Qe7a3 Rb2xb7 Qa3c1 Qe3xc1 Ra1xc1 Kg2f2 Kh6g6 Rb7a7 Rc1xc3 Ra7xa5 Rc3b3 Ra5a7 Rb3b2+ Kf2e3 Rb2b3+ Ke3f2
19 00:14 24.240.427 1.714.073 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Qe3e2 a5a4 Rb2a2 Ra1xa2 Qe2xa2 b7b5 Qa2b2 Qe7d7 Qb2a3 Kh6g7 Kg2f2 Qd7d8 Kf2e2 f7f6 Ke2e3 Kg7f7
20- 00:17 42.160.733 2.345.651 +1.81 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Qe3e1 b7b5 Qe1b1 b5b4 Qb1xb4 Qe7xb4 c3xb4 Ra3a4 b4b5
21 00:26 83.505.307 3.138.707 +1.69 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 b7b5 Qc1b2 Ra1a6 Kg2f3 Kh6g6 Kf3e3 f7f6 e5xf6 Kg6xf6 Nb1d2 Ra6b6 Rc2c1 b5b4 Nd2f3 b4xc3 Qb2xc3 Kf6g7
22 00:48 192.075.652 4.000.159 +1.53 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Rc2d2 Kh6g7 Rd2b2 b7b5 Kg2f3 a7a5 Qc1c2 f7f6 Qc2e2 f6xe5 Qe2xe5+ Kg7h7 Kf3e2 b5b4 c3xb4 a5xb4 Rb2xb4 Kh7g6
23+ 01:31 415.881.734 4.538.657 +1.93 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 a7a5 Nd2b1 a5a4 Qe2c2 Kh6g7 Rb2a2 Ra1xa2 Qc2xa2 Qe7e8 Nb1d2 b7b5 Qa2a3 Qe8f8 Nd2b1 Qf8xa3 Nb1xa3 b5b4 c3xb4
24 01:47 495.274.359 4.628.126 +1.57 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Nf3g5 a5a4 Rb2b5 a4a3 Rb5a5 Ra1a2+ Kg2h3 Qe7f8 Qe3c1 Ra2b2 Ra5a7 Kh6g7 Qc1a1 Rb2b3 Kh3g2 Qf8e7 Ra7a8 Rb3b2+ Kg2f1 Rb2b3
25 06:53 2.044.835.736 4.946.899 +0.88 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Kg2h3 a5a4 Qe3f2 b7b5 Rb2xb5 a4a3 Rb5a5 Qe7b7 Qf2h2 Kh6g6 Qh2g2 Qb7b2 Nf3g5 Ra1c1 Ra5a8 Rc1xc3 Ra8g8+ Kg6h6 Ng5xf7+ Kh6h7 Rg8a8 Kh7g6 Nf7d6
26 11:29 3.435.652,112 4.979.307 +0.92 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3f2 b7b5 Nd2b1 Qe7b7 Qf2c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 Qb7b6 Qa2b2 b5b4 Kg2f2 Qb6a7 Kf2e2 b4xc3 Qb2xc3 Qa7b6 Nb1d2 Qb6b4 Qc3c1 Kh6g7 Ke2e3 a5a4 Nd2b1 Kg7g6 Nb1c3 a4a3 Qc1c2
27 15:52 4.777.288,908 5.014.633 +0.88 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f3 b7b5 Kf3e3 Qa6b6 Qe2c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Qa2b2 Kh6g7 Ke3d2 Kg7g6 Kd2c1 f7f6 e5xf6 Kg6xf6 Qb2e2 Kf6e7 Kc1c2 b4xc3 Nb1xc3 Qb6xd4 Qe2xh5
28 33:21 10.048.311,661 5.020.546 +0.84 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f3 b7b5 Kf3e3 Qa6b6 Qe2c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Qa2b2 Kh6g7 Ke3d2 Kg7g6 Kd2c1 f7f6 e5xf6 Kg6xf6 Nb1d2 Qb6d6 Nd2f3 b4xc3 Qb2xc3 a5a4 Kc1b2 Qd6b6+ Kb2c2 Qb6b3+ Kc2d2 Qb3xc3+ Kd2xc3
29+ 44:08 13.325.937,877 5.031.007 +1.05 Ra2xc2 Nb5xa3 Bc1xa3
30 1:06:17 20.301.322,972 5.103.779 +0.92 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f2 b7b5 Qe2c2 Qa6b6 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Kf2e3 a7a5 Qa2b2 Kh6g6 Nb1d2 Kg6g7 Nd2f3 b4b3 Nf3d2 a5a4 Qb2a3 Qb6a5 Nd2b1 Qa5a7 Qa3d6 Kg7h7 Qd6c5 Qa7d7 Qc5f8 Qd7c7 Nb1d2
31 2:30:21 46.052.542,142 5.104.752 +0.88 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f2 b7b5 Qe2c2 Qa6b6 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Kf2e3 a7a5 Qa2b2 Kh6g6 Nb1d2 Kg6g7 Ke3e2 Qb6b5 Ke2d1 Qb5a4+ Kd1c1 b4xc3 Qb2xc3 Qa4b4 Kc1c2 Qb4a4+ Kc2b2 Qa4b4+ Qc3xb4 a5xb4 Nd2f3 Kg7g6 Kb2c2 Kg6h6 Nf3g5 Kh6g6
12/29/2009 2:10:46 AM, Time for this analysis: 02:33:59, Rated time: 5:00:00
-
Uri Blass
- Posts: 10893
- Joined: Thu Mar 09, 2006 12:37 am
- Location: Tel-Aviv Israel
Re: an hard test position
ThanksDann Corbit wrote:Looks really hard. This is the position after the key move has been forced:
Code: Select all
1) "After move Bxc2 has Searching move: Best move (Stockfish 1.6s): Ra2xc2 Not found in: 5:00:00 2 00:00 299 849 +2.86 Ra2xc2 Kh6g6 3 00:00 688 1.949 +3.11 Ra2xc2 Kh6g7 Nd2f3 Nb5xa3 4 00:00 1.078 3.053 +3.07 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6 5 00:00 1.933 5.445 +3.07 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6 6+ 00:00 3.130 8.792 +3.27 Ra2xc2 Kh6g7 Nd2f3 f7f6 e5xf6+ Qe7xf6 Nf3e5 7 00:00 23.691 65.444 +2.70 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1c1 Ra3a2 Nd2f3 Ra2xc2+ Rc1xc2 8 00:02 31.727 11.058 +2.58 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1c1 Ra3a2 Nd2f3 Ra2xc2+ Rc1xc2 Kh6g7 Rc2b2 Ra6a1 9 00:03 55.214 18.156 +2.66 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2f3 Kh6g7 Rc2b2 b7b6 Nf3g5 Ra3b3 10 00:03 138.603 42.477 +2.46 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1e1 Ra3a2 Rc2c1 Kh6g6 Qe3e2 Ra6a3 Re1h1 Kg6g7 11 00:03 195.369 59.418 +2.50 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1e1 Ra3a2 Rc2c1 Kh6g6 Qe3e2 Ra2b2 Rc1b1 Rb2xb1 Re1xb1 Ra6a2 Kg2f2 12 00:04 431.244 92.047 +2.34 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1d1 Ra3a2 Rc2c1 Ra6a3 Rd1e1 Kh6g7 Re1e2 Ra2a1 Nd2f3 Ra1xc1 Qe3xc1 13 00:04 668.374 140.799 +2.22 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1d1 Ra3a2 Rc2c1 Ra6a3 Rd1f1 Kh6g7 Rf1f2 Ra2b2 Nd2f3 Ra3a2 Rf2xb2 Ra2xb2+ Nf3d2 14 00:05 1.846.453 345.648 +2.22 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rc2c1 Ra6a3 Kg2f3 Kh6g7 Qe3e1 Qe7d7 Qe1d1 b7b5 Kf3g2 Ra3b3 15 00:06 2.820.510 410.913 +2.14 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Qc1b2 Qd7a4 Nb1d2 Kh6g7 Nd2f3 a7a5 Rc2d2 b7b5 Nf3g5 Qa4a3 16 00:08 4.407.875 535.716 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Rc2e2 Qd7a4 Re2b2 b7b5 Qc1e1 a7a5 Kg2f2 b5b4 c3xb4 Kh6g6 17 00:08 7.028.646 795.005 +2.06 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Rc2e2 Qd7a4 Re2b2 b7b5 Rb2b4 Ra1a2+ Kg2f3 Qa4a5 Rb4b2 Ra2xb2 Qc1xb2 Kh6g6 Nb1a3 a7a6 18 00:11 16.298.320 1.362.280 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Nf3e1 Qe7a3 Rb2xb7 Qa3c1 Qe3xc1 Ra1xc1 Kg2f2 Kh6g6 Rb7a7 Rc1xc3 Ra7xa5 Rc3b3 Ra5a7 Rb3b2+ Kf2e3 Rb2b3+ Ke3f2 19 00:14 24.240.427 1.714.073 +2.02 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Qe3e2 a5a4 Rb2a2 Ra1xa2 Qe2xa2 b7b5 Qa2b2 Qe7d7 Qb2a3 Kh6g7 Kg2f2 Qd7d8 Kf2e2 f7f6 Ke2e3 Kg7f7 20- 00:17 42.160.733 2.345.651 +1.81 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Qe3e1 b7b5 Qe1b1 b5b4 Qb1xb4 Qe7xb4 c3xb4 Ra3a4 b4b5 21 00:26 83.505.307 3.138.707 +1.69 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 b7b5 Qc1b2 Ra1a6 Kg2f3 Kh6g6 Kf3e3 f7f6 e5xf6 Kg6xf6 Nb1d2 Ra6b6 Rc2c1 b5b4 Nd2f3 b4xc3 Qb2xc3 Kf6g7 22 00:48 192.075.652 4.000.159 +1.53 Ra2xc2 Nb5xa3 Ra1xa3 Ra5xa3 Bc1xa3 Ra6xa3 Nd2b1 Ra3a1 Qe3c1 Qe7d7 Rc2d2 Kh6g7 Rd2b2 b7b5 Kg2f3 a7a5 Qc1c2 f7f6 Qc2e2 f6xe5 Qe2xe5+ Kg7h7 Kf3e2 b5b4 c3xb4 a5xb4 Rb2xb4 Kh7g6 23+ 01:31 415.881.734 4.538.657 +1.93 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 a7a5 Nd2b1 a5a4 Qe2c2 Kh6g7 Rb2a2 Ra1xa2 Qc2xa2 Qe7e8 Nb1d2 b7b5 Qa2a3 Qe8f8 Nd2b1 Qf8xa3 Nb1xa3 b5b4 c3xb4 24 01:47 495.274.359 4.628.126 +1.57 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Nf3g5 a5a4 Rb2b5 a4a3 Rb5a5 Ra1a2+ Kg2h3 Qe7f8 Qe3c1 Ra2b2 Ra5a7 Kh6g7 Qc1a1 Rb2b3 Kh3g2 Qf8e7 Ra7a8 Rb3b2+ Kg2f1 Rb2b3 25 06:53 2.044.835.736 4.946.899 +0.88 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Nd2f3 a7a5 Kg2h3 a5a4 Qe3f2 b7b5 Rb2xb5 a4a3 Rb5a5 Qe7b7 Qf2h2 Kh6g6 Qh2g2 Qb7b2 Nf3g5 Ra1c1 Ra5a8 Rc1xc3 Ra8g8+ Kg6h6 Ng5xf7+ Kh6h7 Rg8a8 Kh7g6 Nf7d6 26 11:29 3.435.652,112 4.979.307 +0.92 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3f2 b7b5 Nd2b1 Qe7b7 Qf2c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 Qb7b6 Qa2b2 b5b4 Kg2f2 Qb6a7 Kf2e2 b4xc3 Qb2xc3 Qa7b6 Nb1d2 Qb6b4 Qc3c1 Kh6g7 Ke2e3 a5a4 Nd2b1 Kg7g6 Nb1c3 a4a3 Qc1c2 27 15:52 4.777.288,908 5.014.633 +0.88 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f3 b7b5 Kf3e3 Qa6b6 Qe2c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Qa2b2 Kh6g7 Ke3d2 Kg7g6 Kd2c1 f7f6 e5xf6 Kg6xf6 Qb2e2 Kf6e7 Kc1c2 b4xc3 Nb1xc3 Qb6xd4 Qe2xh5 28 33:21 10.048.311,661 5.020.546 +0.84 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f3 b7b5 Kf3e3 Qa6b6 Qe2c2 a7a5 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Qa2b2 Kh6g7 Ke3d2 Kg7g6 Kd2c1 f7f6 e5xf6 Kg6xf6 Nb1d2 Qb6d6 Nd2f3 b4xc3 Qb2xc3 a5a4 Kc1b2 Qd6b6+ Kb2c2 Qb6b3+ Kc2d2 Qb3xc3+ Kd2xc3 29+ 44:08 13.325.937,877 5.031.007 +1.05 Ra2xc2 Nb5xa3 Bc1xa3 30 1:06:17 20.301.322,972 5.103.779 +0.92 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f2 b7b5 Qe2c2 Qa6b6 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Kf2e3 a7a5 Qa2b2 Kh6g6 Nb1d2 Kg6g7 Nd2f3 b4b3 Nf3d2 a5a4 Qb2a3 Qb6a5 Nd2b1 Qa5a7 Qa3d6 Kg7h7 Qd6c5 Qa7d7 Qc5f8 Qd7c7 Nb1d2 31 2:30:21 46.052.542,142 5.104.752 +0.88 Ra2xc2 Nb5xa3 Bc1xa3 Ra5xa3 Ra1b1 Ra3a2 Rb1b2 Ra2xb2 Rc2xb2 Ra6a1 Qe3e2 Qe7a3 Nd2b1 Qa3a6 Kg2f2 b7b5 Qe2c2 Qa6b6 Rb2a2 Ra1xa2 Qc2xa2 b5b4 Kf2e3 a7a5 Qa2b2 Kh6g6 Nb1d2 Kg6g7 Ke3e2 Qb6b5 Ke2d1 Qb5a4+ Kd1c1 b4xc3 Qb2xc3 Qa4b4 Kc1c2 Qb4a4+ Kc2b2 Qa4b4+ Qc3xb4 a5xb4 Nd2f3 Kg7g6 Kb2c2 Kg6h6 Nf3g5 Kh6g6 12/29/2009 2:10:46 AM, Time for this analysis: 02:33:59, Rated time: 5:00:00
I do not know if the sacrifice is winning but the fact that the score does not improve and most of the time goes down (except some improvement at depth 29) cause me to suspect that it may be winning
Uri
-
zullil
- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: an hard test position
Crafty-23.1 prefers Nc7, after an hour at 22.5M nps:Uri Blass wrote:[d]8/pp2qp2/r3p2k/rn1pPp1p/b1pP1P1P/P1P1Q1P1/R1PN2K1/R1B5 b - - 0 1 bm Bxc2
How much time does your program need to find this positional sacrifice?
Code: Select all
Crafty v23.1 (8 cpus)
White(1): book off
book file disabled.
White(1): ponder off
pondering disabled.
White(1): setboard 8/pp2qp2/r3p2k/rn1pPp1p/b1pP1P1P/P1P1Q1P1/R1PN2K1/R1B5 b - - 0 1
Black(1): st 3600
search time set to 3600.00.
Black(1): display stats
display statistics at end of each search.
Black(1): display
+---+---+---+---+---+---+---+---+
8 | | . | | . | | . | | . |
+---+---+---+---+---+---+---+---+
7 |<P>|<P>| . | |<Q>|<P>| . | |
+---+---+---+---+---+---+---+---+
6 |<R>| . | | . |<P>| . | |<K>|
+---+---+---+---+---+---+---+---+
5 |<R>|<N>| . |<P>|-P-|<P>| . |<P>|
+---+---+---+---+---+---+---+---+
4 |<B>| . |<P>|-P-| |-P-| |-P-|
+---+---+---+---+---+---+---+---+
3 |-P-| |-P-| |-Q-| |-P-| |
+---+---+---+---+---+---+---+---+
2 |-R-| . |-P-|-N-| | . |-K-| . |
+---+---+---+---+---+---+---+---+
1 |-R-| |-B-| | . | | . | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Black(1): go
time limit 60:00 (+0.00) (60:00)
depth time score variation (1)
starting thread 1
starting thread 2
starting thread 3
starting thread 4
starting thread 5
starting thread 6
starting thread 7
10 0.04 -0.17 1. ... Kg7 2. Nf3 Qf8 3. Bd2 Kg8 4.
Ng5 Qh6 5. Rb2 Rc6 6. Rf1
10-> 0.04 -0.17 1. ... Kg7 2. Nf3 Qf8 3. Bd2 Kg8 4.
Ng5 Qh6 5. Rb2 Rc6 6. Rf1 (s=2)
11 0.05 -0.18 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Bd2 Rc6 5. Rb2 Rc8 6. Qe2 Qh6 <HT>
11-> 0.06 -0.18 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Bd2 Rc6 5. Rb2 Rc8 6. Qe2 Qh6 <HT>
(s=2)
12 0.07 -0.21 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Bd2 Rc6 5. Rb2 Rc8 6. Qf3 Qh6 7. Re1
12-> 0.09 -0.21 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Bd2 Rc6 5. Rb2 Rc8 6. Qf3 Qh6 7. Re1
(s=2)
13 0.11 -0.26 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Bd2 Rc6 5. Rb2 Rc8 6. Qf3 Qh6 7. Re1
Ra6
13-> 0.13 -0.26 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Bd2 Rc6 5. Rb2 Rc8 6. Qf3 Qh6 7. Re1
Ra6 (s=2)
14 0.20 -0.32 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Rb1 Rc6 5. Bd2 Qh6 6. Rb4 Raa6 7. Rab2
Rcb6 8. Ra2
14-> 0.22 -0.32 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Rb1 Rc6 5. Bd2 Qh6 6. Rb4 Raa6 7. Rab2
Rcb6 8. Ra2
15 0.27 -0.25 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Rb1 Rc6 5. Bd2 Qh6 6. Rb4 Raa6 7. Rab2
Rcb6 8. Ra2 Qg6
15-> 0.34 -0.25 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Rb1 Rc6 5. Bd2 Qh6 6. Rb4 Raa6 7. Rab2
Rcb6 8. Ra2 Qg6 (s=3)
16 0.41 -0.26 1. ... Kg7 2. Nf3 Qf8 3. Ng5 Kg8 4.
Rb1 Rc6 5. Bd2 Qh6 6. Rb4 Raa6 7. Rab2
Rcb6 8. Ra2 Qf8 9. Qf2 (s=2)
16 2.69 -1 1. ... Nc7!
16 2.83 -0.65 1. ... Nc7 2. Nf3 Rb5 3. Kf2 Rab6 4.
Nd2 Kg6 5. Qf3 Na6 6. Nf1 Rb1 7. Ne3
Nc7 8. Bd2 Bd7 9. Rxb1 <HT>
16-> 2.83 -0.65 1. ... Nc7 2. Nf3 Rb5 3. Kf2 Rab6 4.
Nd2 Kg6 5. Qf3 Na6 6. Nf1 Rb1 7. Ne3
Nc7 8. Bd2 Bd7 9. Rxb1 <HT> (s=3)
17 3.10 -0.65 1. ... Nc7 2. Nf3 Rb5 3. Kf2 Rab6 4.
Nd2 Kg6 5. Qf3 Ne8 6. Nf1 Ng7 7. Ne3
Kh7 8. Kg2 Rb1 9. Rxb1 Rxb1 (s=2)
17-> 3.14 -0.65 1. ... Nc7 2. Nf3 Rb5 3. Kf2 Rab6 4.
Nd2 Kg6 5. Qf3 Ne8 6. Nf1 Ng7 7. Ne3
Kh7 8. Kg2 Rb1 9. Rxb1 Rxb1
18 3.77 -0.65 1. ... Nc7 2. Nf3 Rb5 3. Kf2 Rab6 4.
Nd2 Kg6 5. Qf3 Ne8 6. Qe3 Kh7 7. Nf3
Ng7 8. Ng5+ Kh8 9. Ke2 Rb1 10. Rxb1
Rxb1
18-> 3.83 -0.65 1. ... Nc7 2. Nf3 Rb5 3. Kf2 Rab6 4.
Nd2 Kg6 5. Qf3 Ne8 6. Qe3 Kh7 7. Nf3
Ng7 8. Ng5+ Kh8 9. Ke2 Rb1 10. Rxb1
Rxb1
19 5.70 -0.67 1. ... Nc7 2. Nf3 Rb5 3. Qe2 Rab6 4.
Nd2 Ne8 5. Nf3 Kg6 6. Ng5 Rb1 7. Rxb1
Rxb1 8. Qe3 Kg7 9. Qd2 Nc7 10. Rb2
Rxb2 11. Bxb2 Nb5 12. Nxf7 <HT>
19-> 5.81 -0.67 1. ... Nc7 2. Nf3 Rb5 3. Qe2 Rab6 4.
Nd2 Ne8 5. Nf3 Kg6 6. Ng5 Rb1 7. Rxb1
Rxb1 8. Qe3 Kg7 9. Qd2 Nc7 10. Rb2
Rxb2 11. Bxb2 Nb5 12. Nxf7 <HT>
20 8.14 -0.61 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Rb2 5. Qc1 Rxa2 6. Rxa2 Nb5 7.
Ng5 Kg7 8. Ra1 Ra6 9. Qb2 Rc6 10. Rb1
Rc8 11. Be3 <HT>
20-> 8.61 -0.61 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Rb2 5. Qc1 Rxa2 6. Rxa2 Nb5 7.
Ng5 Kg7 8. Ra1 Ra6 9. Qb2 Rc6 10. Rb1
Rc8 11. Be3 <HT>
21 11.08 -0.61 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Rb2 5. Qc1 Rxa2 6. Rxa2 Nb5 7.
Ng5 Kg7 8. Ra1 Nc7 9. Ra2 <HT>
21-> 11.80 -0.61 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Rb2 5. Qc1 Rxa2 6. Rxa2 Nb5 7.
Ng5 Kg7 8. Ra1 Nc7 9. Ra2 <HT>
22 19.67 -0.66 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Qd8 5. Ng5 Qg8 6. Kf3 Qg6 7. Be3
Kg7 8. Qc1 Na6 9. Kf2 Kf8 10. Kf1 Ke8
11. Kg2 Rc6 <HT>
22-> 20.62 -0.66 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Qd8 5. Ng5 Qg8 6. Kf3 Qg6 7. Be3
Kg7 8. Qc1 Na6 9. Kf2 Kf8 10. Kf1 Ke8
11. Kg2 Rc6 <HT>
23 27.16 -0.66 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Qd8 5. Ng5 Qg8 6. Be3 Qg6 7. Qc1
Kg7 8. Bf2 Na6 9. Kh2 Kf8 10. Be3 Ke8
11. Kg2 Kf8 12. Kf2 Ra5 13. Rb2 Rxb2
14. Qxb2 <HT>
23-> 28.68 -0.66 1. ... Nc7 2. Nf3 Rb5 3. Bd2 Rab6 4.
Qg1 Qd8 5. Ng5 Qg8 6. Be3 Qg6 7. Qc1
Kg7 8. Bf2 Na6 9. Kh2 Kf8 10. Be3 Ke8
11. Kg2 Kf8 12. Kf2 Ra5 13. Rb2 Rxb2
14. Qxb2 <HT>
24 1:28 -0.71 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Rf1
Qd8 8. Qf2 Kg7 9. Qf3 Qh8 10. Raa1
Qh6 11. Kg2 Rb2 12. Bc1 Rb1 13. Rxb1
Rxb1
24-> 1:34 -0.71 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Rf1
Qd8 8. Qf2 Kg7 9. Qf3 Qh8 10. Raa1
Qh6 11. Kg2 Rb2 12. Bc1 Rb1 13. Rxb1
Rxb1
25 1:57 -0.71 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Rf1
Qd8 8. Qf2 Kg7 9. Qf3 Qh8 10. Raa1
Rb2 11. Bc1 Rb1 12. Rxb1 Rxb1 13. Kg2
Qh6
25-> 2:04 -0.71 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Rf1
Qd8 8. Qf2 Kg7 9. Qf3 Qh8 10. Raa1
Rb2 11. Bc1 Rb1 12. Rxb1 Rxb1 13. Kg2
Qh6
26 4:35 -0.69 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Re1
Kg7 8. Kg2 Qf8 9. Raa1 Rb2 10. Bc1
Rb1 11. Bd2 Rxa1 12. Rxa1 Kg6 <HT>
26-> 5:02 -0.69 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Re1
Kg7 8. Kg2 Qf8 9. Raa1 Rb2 10. Bc1
Rb1 11. Bd2 Rxa1 12. Rxa1 Kg6 <HT>
27 7:11 -0.71 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Re1
Kg7 8. Kg2 Qf8 9. Raa1 Rb2 10. Bc1
Rb1 11. Rxb1 Rxb1 12. Qf2 Qh8 13. Qf3
Qh6 14. Rd1 Qg6
27-> 7:40 -0.71 1. ... Nc7 2. Qg1 Rb5 3. Nf1 Rab6 4.
Ne3 Na6 5. Bd2 Nb8 6. Kh3 Nd7 7. Re1
Kg7 8. Kg2 Qf8 9. Raa1 Rb2 10. Bc1
Rb1 11. Rxb1 Rxb1 12. Qf2 Qh8 13. Qf3
Qh6 14. Rd1 Qg6
28 38:29 -0.74 1. ... Nc7 2. Qg1 Rb6 3. Nf1 Na6 4.
Bd2 Qd8 5. Ne3 Nb8 6. Re1 Rab5 7. Raa1
Kg7 8. Kf3 Nc6 9. Reb1 Rb2 10. Qc1
Rxb1 11. Rxb1 Rxb1 <HT>
28-> 39:13 -0.74 1. ... Nc7 2. Qg1 Rb6 3. Nf1 Na6 4.
Bd2 Qd8 5. Ne3 Nb8 6. Re1 Rab5 7. Raa1
Kg7 8. Kf3 Nc6 9. Reb1 Rb2 10. Qc1
Rxb1 11. Rxb1 Rxb1 <HT>
29 58:18 -0.72 1. ... Nc7 2. Qg1 Rb6 3. Nf1 Na6 4.
Bd2 Qd8 5. Ne3 Nb8 6. Kh3 Kg7 7. Qd1
Qh8 8. Rb1 Rbb5 9. Kg2 Nc6 10. Rab2
Rxb2 11. Rxb2 Rb5 12. Rxb5 Bxb5 13.
Qb1 a6 14. Kf3 Qh6 15. Qg1 b6
time=60:00 mat=0 n=80876059087 fh=82% nps=22.5M
extensions=2613.1M qchecks=2108.8M reduced=1170.5M pruned=2849.8M
predicted=0 evals=1291.0M 50move=0 EGTBprobes=1 hits=1
SMP-> splits=7147367 aborts=995853 data=80/512 elap=60:00
terminating SMP processes.
Black(1): Nc7
time used: 60:00