Author: Dann Corbit
Date: 17:57:43 04/08/03
Go up one level in this thread
On April 08, 2003 at 14:23:35, Uri Blass wrote:
>ECM.1294
>[D]2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - - 0 1
>bm Rxc1
>
>I am not sure if it is the best move.
>
>Black has other options like Rc5 and d4
>
>Fritz8 does not like Rxc1 at least after a short analysis and if I give it the
>position after Rxc1 Rxc1 it cannot see more than getting the material back.
>
>New game
>[D]2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - - 0 1
>
>Analysis by Fritz 8:
>
>1...Rfd8 2.Qa5 a6 3.Qe1 Rc6 4.Qa5 Rc2
> ² (0.53) Depth: 7/19 00:00:00 124kN
>1...Rfd8 2.Re1 Rc2 3.Rd2 a6 4.Qa5
> ² (0.37) Depth: 8/20 00:00:00 363kN
>1...Rc5!
> ² (0.34) Depth: 8/20 00:00:01 506kN
>1...Rc5 2.Qb3 Qxe6 3.Rfd1 g5 4.fxg5 Rfc8 5.Be3
> ² (0.31) Depth: 8/21 00:00:01 565kN
>1...Rc5!
> = (0.03) Depth: 9/22 00:00:02 815kN
>1...Rc5--
> ² (0.31) Depth: 10/24 00:00:04 1355kN
>1...Rc5 2.Qb3 Rb8
> ² (0.31) Depth: 10/24 00:00:04 1481kN
>1...Rc5 2.Qb3 Qxe6 3.Rfd1 Rd8 4.Be3 Rc4 5.Bxa7 Rxf4 6.a5 Rd7 7.Bd4
> ² (0.34) Depth: 11/25 00:00:11 4082kN
>1...d4!
> ² (0.31) Depth: 11/29 00:00:18 7318kN
>1...d4 2.Qb3 Rb8 3.Qa2 Qc5 4.b3 Qf5 5.Qe2 Rb6 6.Re1 Rfb8 7.g4
> = (0.25) Depth: 12/30 00:00:29 12110kN
>1...d4 2.Qb3 Rb8 3.Qa2 Rfc8 4.b4 Rxb4 5.Ba3 Qa6 6.Bxb4 Qxd3 7.Bxe7 Qe3+
> = (0.16) Depth: 13/34 00:01:16 32916kN
>1...d4 2.Qb3 Rb8 3.Qa2 Rfc8 4.f5 Be5 5.fxg6 hxg6 6.g3 Rc6 7.Bf4 Bxf4
> = (0.09) Depth: 14/38 00:03:05 81404kN
>
>(Blass, Tel-Aviv 08.04.2003)
>
>After Rxc1 Rxc1
>
>New game
>5rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2R3K1 b - - 0 1
>
>Analysis by Fritz 8:
>
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2
> ² (0.44) Depth: 7/19 00:00:00 69kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2
> ² (0.44) Depth: 8/18 00:00:00 117kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2
> ² (0.44) Depth: 9/24 00:00:00 301kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.b4 Qxe6 9.Qxa7
> ² (0.47) Depth: 10/22 00:00:01 675kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.b4 Qxe6 9.Qxa7
> ² (0.47) Depth: 11/25 00:00:03 1519kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 h6 8.b4 Qe2 9.Qxd5
> ² (0.50) Depth: 12/28 00:00:09 3801kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.b4 Qxe6
> ² (0.41) Depth: 13/32 00:00:22 9811kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.Qxd5 Qxb2
> ² (0.34) Depth: 14/34 00:00:51 23709kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.Qxd5 Qf2+ 9.Kh1
>Qxb2
> ² (0.34) Depth: 15/39 00:01:59 55759kN
>
>(Blass, Tel-Aviv 08.04.2003)
Ruffian output:
E:\programme\winboard\ruffian>ruffian -h 300M -T \gcpq.epd -t 999 -p 99
Hash size 314572800
Ruffian 1.0.1
feature done=0
Loading configuration: ruffian.cfg
Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608
Logfile: Tue Apr 08 13:17:23 2003
Total hash size 300M
Initializing tablebases: /programme/winboard/nalimov
Testing \gcpq.epd, 999 seconds, extra ply 99
Testing: test 1 Solution: d4
2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - -
Depth Time Score Best line
7/16 1.04 x.xx ... d4
7/16 1.21 -0.18 ... d4 Re1 Rxc1 Rxc1 Qxf4 Rdd1 Qe3+ Kh1 Qxe6
7--> 1.30 -0.18 ... d4 Re1 Rxc1 Rxc1 Qxf4 Rdd1 Qe3+ Kh1 Qxe6
8/17 1.68 -0.32 ... d4 Re1 Rc2 Qb3 Rfc8 Bd2 Kh8 Rd1
8/17 1.74 x.xx ... Rxc1
8/21 2.03 0.00 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qc1+ Rd1
8--> 2.68 0.00 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qc1+ Rd1
9/23 3.03 0.00 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qc1+ Rd1
9--> 4.25 0.00 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qc1+ Rd1
10/24 4.97 0.10 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Rd8
10/24 7.98 x.xx ... Rc5
10/24 9.37 0.28 ... Rc5 Qb3 Rb8 Qd1 Bxb2 Be3 Ra5 f5 Be5 fxg6 Bxh2+
10--> 10.79 0.28 ... Rc5 Qb3 Rb8 Qd1 Bxb2 Be3 Ra5 f5 Be5 fxg6 Bxh2+
11/24 15.27 0.00 ... Rc5 Qb3 Rb8 Qa3 Rxc1 Rxc1 Qb6+ Kh1 Bxb2 Qxe7
Bxc1 Qf7+ Kh8 Qf6+ Kg8 Qf7+
11--> 24.72 0.00 ... Rc5 Qb3 Rb8 Qa3 Rxc1 Rxc1 Qb6+ Kh1 Bxb2 Qxe7
Bxc1 Qf7+ Kh8 Qf6+ Kg8 Qf7+
12/28 43.99 -0.29 ... Rc5 Qb3 Qxe6 Rfd1 Rd8 Be3 Ra5 Qb4 Ra6 Bc5 Qc6
Bxe7 Rxa4
12/28 45.13 x.xx ... Rxc1
12/28 47.55 0.00 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Qc2
12--> 1:05 0.00 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Qc2
13/31 1:11 0.12 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Qxe6 Qxd5 Qxd5 Rxd5 Kf7
13--> 1:54 0.12 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Qxe6 Qxd5 Qxd5 Rxd5 Kf7
14/32 2:08 0.11 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Qd2
Qxd2 Rxd2 Rf5 Rc2 Kg7 Rc7 Kf6 b4
14--> 4:57 0.11 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Qd2
Qxd2 Rxd2 Rf5 Rc2 Kg7 Rc7 Kf6 b4
15/36 5:35 0.14 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Rd8 Qxa7 Qxe6 Rf1 d4 b4 d3
15--> 10:05 0.14 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 Rd1 Rd8 Qxa7 Qxe6 Rf1 d4 b4 d3
16/41 11:36 0.10 ... Rxc1 Rxc1 Qxf4 Qc5 Bd4+ Qxd4 Qxc1+ Rd1 Qc2 Rd2
Qf5 h3 Qf1+ Kh2 Rf5 Rd3 Qe1 Re3 Qa5 Rc3 Rf6 Rc6
16... 15:51 3/44 d4
Time: 16:39, cpu 96.45%, nodes 586502731, nps 587036
Hash: 128M, used 100%, hits 25%
EGTB: probs 0, hits 0
Best move: Rxc1 (0.10) Not solved (0/1)
Summery: 0/1
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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