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Subject: Re: Which Programs will Take the Pawn and Lose in this Position?

Author: Jeff Lischer

Date: 19:25:24 01/04/00

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On January 04, 2000 at 13:06:37, Howard Exner wrote:

>On January 04, 2000 at 10:24:25, Jeff Lischer wrote:
>
>>On January 02, 2000 at 16:17:32, Howard Exner wrote:
>>
>>>Rebel Century plays Kb1 at 0:34 and holds on to that move on a K2-233. In this
>>>case default mode with the Anti GM off is better than having AG = Strong.
>>
>>On my machine, Rebel Century with Anti-GM OFF or STRONG both switch to Kb1 at
>>about the same time on ply 7 and hold on to it after that.
>
>I tried this again on 28 MBhash. Off gets in in the 6th ply, while Strong
>has not found it after 7 ply. What hash setting are you using?

I've now tried this with hash sizes from 4 to 60 MB and I get similar results in
all cases. Here are the log files for 60 MB with Anti-GM OFF and STRONG. Even
after ply 10 when the evaluations drop, neither switches from Kb1. I wonder why
your results are different. Any ideas?


Anti-GM       Off

00:00:00  1.00  0.91   1.Nf3 Qxa2 2.Nxe5
00:00:00  1.06  1.91   1.Qxg7
00:00:00  2.00  1.80   1.Qxg7 Qa3+ 2.Kb1
00:00:00  3.00  1.90   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Qxe5 Qa3+
                       4.Kb1  (0)
00:00:00  4.00  2.22   1.Qxg7 Rf8 2.Kb1 Kb8 3.Qxh7 Bxf2
00:00:01  5.00  1.90   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Qxe5 Qa3+
                       4.Kb1  (0)
00:00:03  6.00  1.55   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Qxh7 Qxa2
00:00:11  7.00  1.40   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Kb1 Ra4
                       4.Qf6 Rf8 5.Qxf8+  (8)
00:00:19  7.08  1.43   1.Kb1 Rd8 2.Bxh7 Bxf2 3.Qxg7
00:00:34  8.00  1.45   1.Kb1 Rf8 2.Qxg7 Ra4 3.Qxe5 Rxa2
                       4.Bxh7 Qa3+ 5.Bf5+ Kb8  (23)
00:01:46  9.00  1.38   1.Kb1 g6 2.Qg7 Rf8 3.Qxe5 Qa3 4.Nf3
                       Bxf2 5.Rdf1 Bc5 6.Bxg6 hxg6 7.Qxc5  (60)
00:07:49 10.00  0.59   1.Kb1 g6 2.c3 Rb6 3.d4 Rf8 4.Qxh7
                       exd4 5.cxd4 Ba3 6.Nf3 Qc3 7.Rd2  (328)
00:41:50 11.00  0.74   1.Kb1 g6 2.c3 Rb6 3.Rc1 Bxf2


Anti-GM       Strong

00:00:00  1.00  0.91   1.Nf3 Qxa2 2.Nxe5
00:00:00  1.06  1.91   1.Qxg7
00:00:00  2.00  1.80   1.Qxg7 Qa3+ 2.Kb1
00:00:00  3.00  1.90   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Qxe5 Qa3+
                       4.Kb1  (0)
00:00:00  4.00  2.22   1.Qxg7 Rf8 2.Kb1 Kb8 3.Qxh7 Bxf2
00:00:01  5.00  1.90   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Qxe5 Qa3+
                       4.Kb1  (0)
00:00:03  6.00  1.55   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Qxh7 Qxa2
00:00:12  7.00  1.40   1.Qxg7 Rd8 2.Bf5+ Kb8 3.Kb1 Ra4
                       4.Qf6 Rf8 5.Qxf8+  (8)
00:00:20  7.07  1.43   1.Kb1 Rd8 2.Bxh7 Bxf2 3.Qxg7
00:00:36  8.00  1.45   1.Kb1 Rf8 2.Qxg7 Ra4 3.Qxe5 Rxa2
                       4.Bxh7 Qa3+ 5.Bf5+ Kb8  (25)
00:01:47  9.00  1.38   1.Kb1 g6 2.Qg7 Rf8 3.Qxe5 Qa3 4.Nf3
                       Bxf2 5.Rdf1 Bc5 6.Bxg6 hxg6 7.Qxc5  (61)
00:08:05 10.00  0.87   1.Kb1 g6 2.c3 Rb6 3.d4 Rf8 4.Qxh7
                       exd4 5.cxd4 Ba3 6.Nf3 Qc3  (332)
00:31:21 11.00  0.74   1.Kb1 g6 2.c3 Rb6 3.Rc1 Bxf2 4.Rc2
                       Be3 5.Nf3 Rd8 6.Qxh7  (1586)




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