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Subject: Re: a simple test position that is hard for Shredder and hiarcs7.32

Author: Martin Giepmans

Date: 17:40:31 01/04/02

Go up one level in this thread


On January 04, 2002 at 06:57:53, Uri Blass wrote:

>How much time do programs need to avoid 74.Nxb5
>Most programs need few seconds when
>Hiarcs7.32(48 Mbytes hash) needs almost 10 minutes on p800
>
>Shredder6 could not avoid Nxb5 even in 112 seconds
>based on the pgn of it's games against tiger aggresive.
>
>Shredder 6 - Gambit Tiger 2.0
>[D]8/5rbk/6q1/1p1Q4/1PpP2p1/2N2p2/5PP1/3R2K1 w - - 0 1
>
>Analysis by Hiarcs 7.32:
>
>74.Nxb5 fxg2 75.Kxg2
>  +-  (1.60)   Depth: 1   00:00:00
>74.Nxb5 fxg2
>  ±  (1.23)   Depth: 2/10   00:00:00
>74.Nxb5 fxg2 75.Qxg2
>  ±  (0.76)   Depth: 2/10   00:00:00
>74.Nxb5 fxg2
>  ±  (1.01)   Depth: 3/13   00:00:00
>74.Nxb5 fxg2
>  ±  (1.01)   Depth: 3/14   00:00:00
>74.Nxb5 fxg2 75.Qxc4 Qf5 76.Rd2
>  ±  (1.07)   Depth: 4/14   00:00:00
>74.Nxb5 fxg2
>  ±  (0.81)   Depth: 5/16   00:00:00  8kN
>74.Nxb5 fxg2
>  ±  (0.81)   Depth: 5/19   00:00:00  15kN
>74.Nxb5 Rf5
>  ²  (0.56)   Depth: 6/21   00:00:00  74kN
>74.Nxb5 Rf5 75.Qd7 Rh5 76.Nd6
>  =  (-0.01)   Depth: 6/23   00:00:01  100kN
>74.Nxb5 Rf5
>  ³  (-0.26)   Depth: 7/23   00:00:02  222kN
>74.Nxb5 Rf5 75.Qxc4 Qh5 76.Qc2 g3 77.gxf3 Qh2+
>  ³  (-0.38)   Depth: 7/25   00:00:02  279kN
>74.Nxb5 Rf5
>  ³  (-0.63)   Depth: 8/25   00:00:06  686kN
>74.Nxb5 Rf5
>  ³  (-0.63)   Depth: 8/27   00:00:08  837kN
>74.Nxb5 Rf5
>  ³  (-0.38)   Depth: 9/27   00:00:39  3940kN
>74.Nxb5 Rf5 75.Qxc4 Qh5 76.Qc2 g3 77.gxf3
>  ³  (-0.38)   Depth: 9/29   00:00:43  4378kN
>74.Nxb5 Rf5
>  ³  (-0.63)   Depth: 10/29   00:01:20  8215kN
>74.Nxb5 Rf5 75.Qxc4 Qh5 76.Qc7 g3 77.Qxg3 Rg5 78.Nc3 Rxg3 79.fxg3
>  -+  (-1.59)   Depth: 10/30   00:02:50  17774kN
>74.Re1 fxg2 75.Ne4 Rf5 76.Qb7 Kg8 77.Kxg2 Bxd4 78.Rd1 Bg7 79.Nd6 Rf3 80.Nxb5
>  µ  (-0.88)   Depth: 10/30   00:09:45  59913kN
>74.Ne4 Rf5 75.Qd7 Rf4 76.Ng3 Qf7 77.Qxf7 Rxf7 78.Ne4 Rf4 79.Ng5+ Kg8 80.Ne6 Re4
>81.Nxg7 Kxg7
>  ³  (-0.66)   Depth: 10/30   00:15:51  94551kN
>
>(Blass, Tel-aviv 04.01.2002)
>
>Uri

I get this:

SpiderChess (amd 1200)
05  00:00:00  - 0.33  C3xB5 G4-G3 G2xF3 G3-G2 D1-C1 F7-F5 D5xC4 F5xF3
06  00:00:00  - 0.31  C3xB5 G4-G3 G2xF3 G3-G2 F3-F4 F7-F5 D5xG2 F5xB5 G2xG6
                      H7xG6
07  00:00:01  - 0.19  C3xB5 G4-G3 G2xF3 G3xF2 G1xF2 G6-C2 F2-G3 H7-G8 B5-D6
                      C2-G6 G3-H3
08  00:00:03  - 0.63  C3xB5 G4-G3 G2xF3 F7-F5 D5xC4 G6-H5 F2xG3 F5xB5 D1-C1
09  00:00:13  - 1.27  C3xB5 F7-F5 D5xC4 G6-H5 C4-C2 G4-G3 F2xG3 F3-F2 G1-F1
                      H5-H1 F1-E2
    00:00:14  - 0.77  G2-G3 F7-F5 D5-D7 F5-H5 D1-E1 G6-F5 D7xF5 H5xF5 E1-E7
10  00:00:20  - 1.40  G2-G3 F7-F5 D5-E4 F5-H5 D1-E1 G6-F5 E4xF5 H5xF5 E1-E7
                      H7-H6 E7-E6 H6-G5 C3-E4 G5-H5 E4-D6
11  00:00:57  - 1.31  G2-G3 F7-F5 D5-E4 F5-H5 D1-E1 G6xE4 E1xE4 H5-G5 E4-E7
                      H7-G6 E7-E6 G6-F5
12  00:02:11  - 1.28  G2-G3 F7-F5 D5-E4 F5-H5 D1-E1 G6xE4 E1xE4 H5-G5 G1-F1
                      H7-G6 E4-E6 G6-F7 E6-E4

Martin



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