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Subject: Re: What does your program give for this tuff position?

Author: Rex

Date: 22:46:20 10/28/02

Go up one level in this thread


There is something about the Ruffian engine....



On October 28, 2002 at 17:20:24, Dann Corbit wrote:

>On October 28, 2002 at 16:29:38, Terry Ripple wrote:
>
>>I found this position from an earlier post and the poster claims that Fritz 7
>>found the continuation of "Rxd4" in which Hiarcs 8 didn't know what to do. He
>>claimed that about 5 moves later the opponent resigned after this sacrifice!
>>
>>My point is that my Fritz 7 didn't see this sacrifice after 1 hour,38 minutes,
>>but my pc is only a AMD 266 Mhz with 64 ram, though this should be enough time!
>>
>>[D]2qr2k1/p4ppp/Pp1Pp3/1Qp1P3/2Pn1P2/B6P/6P1/3R2K1 w
>E:\programme\winboard\ruffian>ruffian -h 300M -t 999 -T rxd4.epd
>Hash size 314572800
>Ruffian 1.0.1
>feature done=0
>Loading configuration: ruffian.cfg
>Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608
>Logfile: Mon Oct 28 14:03:13 2002
>Total hash size 300M
>Initializing tablebases: /programme/winboard/nalimov
>Testing rxd4.epd, 999 seconds, extra ply 3
>Testing: test 1   Solution: Qxb6
>  2qr2k1/p4ppp/Pp1Pp3/1Qp1P3/2Pn1P2/B6P/6P1/3R2K1 w - -
>  Depth   Time  Score    Best line
>   9-->   1.14  -0.84    Qb2 Qxa6 Qa2 Qa4 Rc1 Rd7 Rb1 f6 Kh1
>  10/20   1.48  -0.86    Qb2 Qxa6 Qa2 Qa4 Rb1 Rd7 Kh1 f6 g3 Qc6+ Qg2
>  10-->   1.98  -0.86    Qb2 Qxa6 Qa2 Qa4 Rb1 Rd7 Kh1 f6 g3 Qc6+ Qg2
>  11/23   3.32  -0.83    Qb2 Qxa6 Qa2 Rd7 Rd2 f6 Bc1 Qxa2 Rxa2 Kf7 Kf2 a5
>  11-->   4.54  -0.83    Qb2 Qxa6 Qa2 Rd7 Rd2 f6 Bc1 Qxa2 Rxa2 Kf7 Kf2 a5
>  12/27   6.14  -0.87    Qb2 Qxa6 Qa2 Rd7 Rd2 Qa4 Bc1 Ne2+ Rxe2 Qd1+ Kh2 Qxc1
>                         Kg3 Qf1
>  12-->   8.55  -0.87    Qb2 Qxa6 Qa2 Rd7 Rd2 Qa4 Bc1 Ne2+ Rxe2 Qd1+ Kh2 Qxc1
>                         Kg3 Qf1
>  13/29  12.96  -0.88    Qb2 Qxa6 Qa2 Qa4 Rd2 Nb3 Rc2 Rd7 Rc3 Nd4 Rd3 a5 Kh1
>                         f6
>  13-->  18.03  -0.88    Qb2 Qxa6 Qa2 Qa4 Rd2 Nb3 Rc2 Rd7 Rc3 Nd4 Rd3 a5 Kh1
>                         f6
>  14/31  48.61  -0.86    Qb2 Qxa6 Qa2 f6 Rd2 g5 Bc1 Qb7 exf6 gxf4 Rd3 f3 gxf3
>                         Rxd6
>  14/36   1:00   x.xx    Rxd4
>  14/36   1:11  -0.69    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 g6 g3 Rd7 Ke3 f5 exf6
>                         Kf7 Qc4
>  14-->   1:18  -0.69    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 g6 g3 Rd7 Ke3 f5 exf6
>                         Kf7 Qc4
>  15/39   1:45  -0.61    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 Rd7 Be3 Qc2+ Kg3 Rd8
>                         Qa5 Qc8 Bxa7 Qd7 Bc5 Rb8
>  15-->   2:07  -0.61    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 Rd7 Be3 Qc2+ Kg3 Rd8
>                         Qa5 Qc8 Bxa7 Qd7 Bc5 Rb8
>  16/43   3:23  -0.56    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 Rd7 Be3 Qc2+ Kg3 Rd8
>                         Qa5 Rf8 d7 d2 d8=Q d1=Q Qxd1 Qxd1 Bxa7 Rd8
>  16-->   4:09  -0.56    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 Rd7 Be3 Qc2+ Kg3 Rd8
>                         Qa5 Rf8 d7 d2 d8=Q d1=Q Qxd1 Qxd1 Bxa7 Rd8
>  17/45   7:08  -0.35    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 Rd7 Be3 Qc2+ Kg3 Rd8
>                         Qa5 Rf8 d7 d2 d8=Q d1=Q Qxd1 Qxd1 Qc7 Rd8 Qxa7
>  17-->   8:38  -0.35    Rxd4 cxd4 c5 bxc5 Bxc5 d3 Kf2 Rd7 Be3 Qc2+ Kg3 Rd8
>                         Qa5 Rf8 d7 d2 d8=Q d1=Q Qxd1 Qxd1 Qc7 Rd8 Qxa7
>  18...   8:38   1/32    Rxd4
>
>Time: 16:39, cpu 98.57%, nodes 591476578, nps 592056
>Hash: 128M, used 100%, hits 24%
>EGTB: probs 0, hits 0
>
>Best move: Rxd4 (-0.35)  Not solved (0/1)
>
>Summery: 0/1



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