Author: Matthew White
Date: 18:49:33 02/17/03
Go up one level in this thread
Interesting, the analysis that I read says "It is worth noting that Kb6 probably
holds :)" Glad ruffian agrees.
Thanks,
Matt
On February 17, 2003 at 21:47:34, mike schoonover wrote:
>On February 17, 2003 at 20:01:18, Matthew White wrote:
>
>>[D]b2r3r/k4p1p/p2q1np1/NppP4/3p1Q2/P4PPB/1PP4P/1K1RR3 w - - 0 24
>>
>>The key move is Rxd4!(or !! depending on who you ask) after which the game
>>continued cxd4? Re7+!! Kb6 Qxd4+ Kxa5 b4 Ka4, etc. From Kasparov-Topalov, Wijk
>>aan Zee 1999. None of the programs I have tried so far can see this within 10
>>minutes or so. I'm thinking that materialism, coupled with the overwhelming
>>desire to move the knight off of a5 prevent most programs from seeing this.
>>
>>Matt
>
>i let ruffian mull over it a while,then forced Rxd4.
>the result is most interesting.
>433 mhz celeron,32mb hash.
>mike
>
>Logfile: Mon Feb 17 20:14:33 2003
>Total hash size 32M
>Open book: ruffian.bok
>Book version 0.3 created Sun Sep 29 02:01:08 2002
>59116 book moves, depth=60
>ruffian: [xboard]
>Initializing tablebases: c:/testa/tb
>{new}
>[new]
>[random]
>[level 0 3 0]
>[post]
>[hard]
>[force]
>[edit]
>[analyze]
> b2r3r/k4p1p/p2q1np1/NppP4/3p1Q2/P4PPB/1PP4P/1K1RR3 w - -
> Depth Time Score Best line
> 7/18 1.13 0.09 Qxd6 Rxd6 b4 cxb4 Re7+ Kb8 axb4 Nxd5 Rxd4 Nxe7 Rxd6
> Bxf3 Rxa6
> 7--> 1.54 0.09 Qxd6 Rxd6 b4 cxb4 Re7+ Kb8 axb4 Nxd5 Rxd4 Nxe7 Rxd6
> Bxf3 Rxa6
> 8/18 2.46 -- Qxd6
> 8/19 4.30 -0.52 Qxd6 Rxd6 Nc6+ Kb6 Ne7 Bb7 b4 Re8 a4 bxa4 bxc5+ Kxc5
> 8/19 4.34 x.xx Nc6+
> 8/19 5.21 0.11 Nc6+ Bxc6 dxc6 Qxf4 Re7+ Kb6 gxf4 Kxc6 Rxf7 Rhf8
> Re7
> 8--> 6.70 0.11 Nc6+ Bxc6 dxc6 Qxf4 Re7+ Kb6 gxf4 Kxc6 Rxf7 Rhf8
> Re7
> 9/22 8.97 0.05 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 c3
> Rd6
> 9--> 13.55 0.05 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 c3
> Rd6
> 10/25 19.51 -0.01 Nc6+ Bxc6 dxc6 Qxf4 Re7+ Kb6 gxf4 Kxc6 Rxf7 Nd5 Re1
> Ne3 Re7
> 10--> 31.53 -0.01 Nc6+ Bxc6 dxc6 Qxf4 Re7+ Kb6 gxf4 Kxc6 Rxf7 Nd5 Re1
> Ne3 Re7
> 11/25 44.51 -0.28 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 Kc1
> Re2 Rd2 Re1+ Rd1 Rxd1+ Kxd1 h6
> 11--> 1:47 -0.28 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 Kc1
> Re2 Rd2 Re1+ Rd1 Rxd1+ Kxd1 h6
> 12/27 2:07 -0.18 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 Bf1
> h5 Bd3 g5 Kc1
> 12--> 3:30 -0.18 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 Bf1
> h5 Bd3 g5 Kc1
> 13/31 4:20 -0.24 Nc6+ Bxc6 Qxd6 Rxd6 dxc6 Rxc6 Re7+ Kb6 Rxf7 Re8 Bf1
> Re3 Kc1 Rd6 Bg2 h6
>{d1d4}
>
>Time: 7:39, cpu 99.98%, nodes 113374721, nps 246600
>Hash: 16M, used 100%, hits 25%
>EGTB: probs 0, hits 0
>
>[d1d4]
> b2r3r/k4p1p/p2q1np1/NppP4/3R1Q2/P4PPB/1PP4P/1K2R3 b - -
> Depth Time Score Best line
> 8/21 1.59 0.52 ... cxd4 Re7+ Kb6 Qxd4+ Qc5 Qxf6+ Qd6 Qxd6+ Rxd6
> Nc6 Rxd5 Ne5 Rd1+ Ka2
> 8--> 2.14 0.52 ... cxd4 Re7+ Kb6 Qxd4+ Qc5 Qxf6+ Qd6 Qxd6+ Rxd6
> Nc6 Rxd5 Ne5 Rd1+ Ka2
> 9/23 4.58 ++ ... cxd4
> 9/24 7.82 1.23 ... cxd4 Qxd4+ Qb6 Re7+ Nd7 Rxd7+ Rxd7 Qxh8 Rxd5
> Qc3 Rd1+ Ka2 Bd5+ Nb3 Kb8
> 9--> 8.55 1.23 ... cxd4 Qxd4+ Qb6 Re7+ Nd7 Rxd7+ Rxd7 Qxh8 Rxd5
> Qc3 Rd1+ Ka2 Bd5+ Nb3 Kb8
> 10/25 14.03 1.39 ... cxd4 Qxd4+ Qb6 Re7+ Nd7 Rxd7+ Rxd7 Qxh8 Rxd5
> Qc3 Rh5 Bd7 Qg1+ Ka2 Bd5+ b3 Rxh2
> 10--> 15.76 1.39 ... cxd4 Qxd4+ Qb6 Re7+ Nd7 Rxd7+ Rxd7 Qxh8 Rxd5
> Qc3 Rh5 Bd7 Qg1+ Ka2 Bd5+ b3 Rxh2
> 11/28 23.14 -- ... cxd4
> 11/28 32.26 0.19 ... cxd4 Re7+ Kb6 Qxd4+ Qc5 Qxf6+ Qd6 Qd4+ Kxa5 Qc3+
> Kb6 Qd4+ Qc5 Qf6+ Bc6 Qxc6+ Qxc6 dxc6 Rd1+ Ka2 Kxc6
> Rxf7
> 11/28 53.79 x.xx ... Bxd5
> 11/28 1:16 0.28 ... Bxd5 Qxd6 Rxd6 Rd2 Rhd8 Nb3 c4 Re7+ Kb6 Nd4 Bxf3
> Nxf3 Rxd2 Nxd2 Rxd2 Rxf7
> 11--> 1:25 0.28 ... Bxd5 Qxd6 Rxd6 Rd2 Rhd8 Nb3 c4 Re7+ Kb6 Nd4 Bxf3
> Nxf3 Rxd2 Nxd2 Rxd2 Rxf7
> 12/30 2:03 0.24 ... Bxd5 Qxd6 Rxd6 Rd2 Rhd8 b4 cxb4 axb4 Kb6 Red1
> Kc7 Bg4 Kb6
> 12--> 2:34 0.24 ... Bxd5 Qxd6 Rxd6 Rd2 Rhd8 b4 cxb4 axb4 Kb6 Red1
> Kc7 Bg4 Kb6
> 13/31 4:12 0.29 ... Bxd5 Qxd6 Rxd6 Rd2 c4 b4 cxb3 Nxb3 Rhd8 Red1
> Kb6 Ka1 Re8 Nd4
> 13/36 9:01 x.xx ... Kb6
> 13/36 12:15 0.34 ... Kb6 Nb3 Bxd5 Qxd6+ Rxd6 Rd2 Rhd8 Rf2 h5 Kc1 Bxb3
> cxb3 Rd3 Re7 Rxb3 Rxf7
> 13--> 13:00 0.34 ... Kb6 Nb3 Bxd5 Qxd6+ Rxd6 Rd2 Rhd8 Rf2 h5 Kc1 Bxb3
> cxb3 Rd3 Re7 Rxb3 Rxf7
>{exit}
>
>Time: 20:53, cpu 99.99%, nodes 319973886, nps 255349
>Hash: 16M, used 100%, hits 23%
>EGTB: probs 0, hits 0
>
>[exit]
>[new]
>[random]
>[level 0 3 0]
>[post]
>[hard]
>[force]
>[quit]
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