Author: Dieter Buerssner
Date: 11:06:28 03/10/01
Go up one level in this thread
On March 10, 2001 at 09:51:28, Sune Larsson wrote:
> 8/6p1/8/1pK2P2/p4k2/5P2/3P3P/8 w - - 0 1
> Test: White wins. Don't know if the programs can make this one
> but it sure is possible. Solution further down.
>
>
> Sune
While Yace finds f6 soon, it needs quite some time to see a positive score
17049481 1:56.1 -0.78 19. 1.f6 gxf6 2.Kb4 Kxf3 3.d4 Ke4 4.h4 f5 5.h5 f4
6.h6 f3 7.h7 f2 8.h8=Q f1=Q 9.Qe5+ Kf3 10.Qf5+
Kg2 11.Qxf1+ Kxf1 12.Kxb5 {0}
18906129 2:08.8 -0.72 20t 1.f6 gxf6 2.Kb4 Kxf3 3.h4 Kg4 4.d4 f5 5.d5 f4
6.d6 f3 7.d7 f2 8.d8=Q f1=Q 9.Qg5+ Kh3 10.h5
Qc4+ 11.Ka5 a3 12.Qxb5 Qxb5+ 13.Kxb5 {0}
24570837 2:51.0 -0.72 20. 1.f6 gxf6 2.Kb4 Kxf3 3.h4 Kg4 4.d4 f5 5.d5 f4
6.d6 f3 7.d7 f2 8.d8=Q f1=Q 9.Qg5+ Kh3 10.h5
Qc4+ 11.Ka5 a3 12.Qxb5 Qxb5+ 13.Kxb5 {0}
27492720 3:09.8 -0.32 21++ 1.f6 gxf6 2.Kb4 Kxf3 3.d4 Ke4 4.h4 f5 5.h5 f4
6.h6 f3 7.h7 f2 8.h8=Q Kf3 9.Kxb5 f1=R
30000293 3:26.2 -0.23 21t 1.f6 gxf6 2.Kb4 Kxf3 3.d4 Ke4 4.h4 f5 5.h5 f4
6.h6 f3 7.h7 f2 8.h8=Q f1=Q 9.Qe5+ Kf3 10.Qf5+
Kg2 11.Qxf1+ Kxf1 12.d5 Ke2H {HT} {-80}
42473134 5:03.2 -0.23 21. 1.f6 gxf6 2.Kb4 Kxf3 3.d4 Ke4 4.h4 f5 5.h5 f4
6.h6 f3 7.h7 f2 8.h8=Q f1=Q 9.Qe5+ Kf3 10.Qf5+
Kg2 11.Qxf1+ Kxf1 12.d5 Ke2 {HT} {-80}
63418596 7:33.9 0.17 22++ 1.f6 gxf6 2.Kb4 Kxf3 3.d4 Ke4 4.h4 f5 5.h5 f4
6.h6 a3 7.Kxa3 f3 8.h7 f2 9.h8=Q f1=R
95082248 10:48.7 0.51 22t 1.f6 gxf6 2.Kb4 Kxf3 3.d4 Ke4 4.h4 f5 5.h5 f4
6.h6 f3 7.h7 f2 8.h8=Q f1=Q 9.Qe5+ Kf3 10.Qf5+
Kg2 11.Qxf1+ Kxf1 12.d5 Ke2 13.d6 Kd3 14.Kxb5
{0}
I also tested this with a version of Yace, that very aggressively uses EGTBs,
even in qsearch. The only relevant 5-men table I have is KPPKP (I think KQPKP
could also help here)
17119392 5:10.0 0.00 19. 1.f6 gxf6 2.Kb4 Kxf3 3.d4 a3 4.Kxa3 Ke4 5.h4
Kxd4 {EGTB} 6.h5! Kc3! 7.h6 b4+! 8.Ka4 b3!
9.h7! b2! {Not all positions found in TB} {-80}
22597523 6:51.6 0.40 20++ 1.f6 gxf6 2.Kb4 Kxf3 3.d4 a3 4.Kb3 f5 5.d5 Ke4
6.d6 Ke5 7.d7 a2 8.d8=Q a1=R
58189126 13:59.0 1.04 20t 1.f6 gxf6 2.Kb4 a3 3.Kb3 f5 4.h4 b4 5.d4 Ke3
6.d5 Kd2 7.d6 a2 8.Kxa2 Kc2 9.d7 b3+ 10.Ka3 b2
11.d8=Q b1=Q 12.Qd4 {HT} {80}
68657840 17:18.5 1.04 20. 1.f6 gxf6 2.Kb4 a3 3.Kb3 f5 4.h4 b4 5.d4 Ke3
6.d5 Kd2 7.d6 a2 8.Kxa2 Kc2 9.d7 b3+ 10.Ka3 b2
11.d8=Q b1=Q 12.Qd4 {HT} {80}
Regards,
Dieter
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