Author: Dieter Buerssner
Date: 03:58:36 09/30/01
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On September 30, 2001 at 05:06:38, Uri Blass wrote:
[snip]
Yace also finds the Nxg6 mate first, but needs slightly more than 10 minutes.
>Note that it is easy to get bigger evaluation changes
>
>here is a simple example
A not so simple example by Blathy, taht most probably was also not easy to find
... I have seen it first, when Helmut Conrady posted it to the German CSS forum:
[D] 8/8/8/2p5/1pp5/brpp4/qpprpK1P/1nkbn3 w - -
Yace 0.99.56 (I think most/all released versions don't find this, the next
version probably will):
1 0.002 -40.10 1t 1.Kxe1 {-3601}
6 0.005 -40.10 1. 1.Kxe1 {-3601}
9 0.012 -40.09 2t 1.Kxe1 Qa1 {-3601}
32 0.016 -40.09 2. 1.Kxe1 Qa1 {-3601}
37 0.020 -40.02 3t 1.Kxe1 Qa1 2.h4 {-3601}
54 0.025 -40.02 3. 1.Kxe1 Qa1 2.h4 {-3601}
[...]
5191 0.380 -30.18 14. 1.Kxe1 Qa1 2.h4 Qa2 3.h5 Qa1 4.h6 Qa2 5.h7 Qa1
6.h8=Q Qa2 7.Qe5 Qa1
5215 0.391 -29.36 15++ 1.Kxe1 Qa1 2.h4 Qa2 3.h5 Qa1 4.h6 Qa2 5.h7 Qa1
6.h8=Q Qa2 7.Qe5 Qa1 8.Qxc5 Qa2 {-2600}
5332 0.415 0.00 15++ 1.Kxe1 Qa1 2.h4 Qa2 3.h5 Qa1 4.h6 Qa2 5.h7 Qa1
6.h8=Q Qa2 7.Qe5 Qa1 8.Qh8 {-2680}
5718 0.427 0.00 15t 1.Kxe1 Qa1 2.h4 Qa2H 3.h5H Qa1H 4.h6H Qa2H
5.h7H Qa1H 6.h8=QH Qa2H 7.Qe5H Qa1H 8.Qh8H Qa2H
9.Qe5H Qa1H 10.Qh8HR {-2680}
6749 0.460 0.00 15. 1.Kxe1 Qa1 2.h4 Qa2 3.h5 Qa1 4.h6 Qa2 5.h7 Qa1
6.h8=Q Qa2 7.Qe5 Qa1 8.Qh8 Qa2 9.Qe5 Qa1 10.Qh8
{-2680}
[...]
1403321 10.205 0.00 32. 1.Kxe1 Qa1 2.h4 Qa2 3.h5 Qa1 4.h6 Qa2 5.h7 Qa1
6.h8=Q Qa2 7.Qh4 Qa1 8.Qh8 {-2680}
1783674 12.607 Mat16 33++ 1.Kxe1 Qa1 2.h3 Qa2 3.h4 Qa1 4.h5 Qa2 5.h6 Qa1
6.h7 Qa2 7.h8=N Qa1 8.Nf7 Qa2 9.Ne5 Qa1 10.Nd7
Qa2 11.Nxc5 Qa1 12.Na4 Qa2 13.Nb6 Qa1 14.Nxc4
Qa2 15.Na5 Qa1 16.Nxb3# {-2681}
1784905 12.636 Mat16 33t 1.Kxe1 Qa1 2.h3 Qa2 3.h4 Qa1 4.h5 Qa2 5.h6 Qa1
6.h7 Qa2 7.h8=N Qa1 8.Nf7 Qa2 9.Ne5 Qa1 10.Nd7
Qa2 11.Nxc5 Qa1 12.Na4 Qa2 13.Nb6 Qa1 14.Nxc4
Qa2 15.Na5 Qa1 16.Nxb3# {-2681}
1942530 13.523 Mat16 33. 1.Kxe1 Qa1 2.h3 Qa2 3.h4 Qa1 4.h5 Qa2 5.h6 Qa1
6.h7 Qa2 7.h8=N Qa1 8.Nf7 Qa2 9.Ne5 Qa1 10.Nd7
Qa2 11.Nxc5 Qa1 12.Na4 Qa2 13.Nb6 Qa1 14.Nxc4
Qa2 15.Na5 Qa1 16.Nxb3# {-2681}
static eval (without Kxe1): -43.9
Regards,
Dieter
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