Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: ECM errata

Author: Amir Ban

Date: 14:56:37 01/18/98

Go up one level in this thread


On January 18, 1998 at 17:39:02, Bruce Moreland wrote:

>
>On January 18, 1998 at 17:05:19, Robert Hyatt wrote:
>
>>On January 18, 1998 at 16:41:30, Amir Ban wrote:
>
>>>No. 11 (Nxg4):
>>>
>>>Junior immediately grabs Bb5 and sticks with it. I analyzed Nxg4 and
>>>there is certainly some point to it. These are two completely different
>>>plans, and although Bb5 seems better, I'm not sure.
>>>
>>>Recommend: Add Bb5 as a side solution.
>>
>>Crafty also found Bb5 as best.  It locks on to this
>>move at .7 seconds and never wavers, eval = +1.5...
>
>I think a lot of what was said in this post was great, but I'd be very
>worried about actually modifying a test suite based upon a 20-second
>search by *anything*.
>
>bruce


I did more than that, and my original post said so. I tried to analyze
both the original key and the alternate for some time, and sometimes
tried to follow lines to see what comes up. In this case (no. 11) I put
up Nxg4 for some time and saw that I get a score climbing up enough to
make it a competitor of Bb5, and then let it think about Bb5 for some
time to see that the score doesn't go up or down drastically.

In no. 28, I discovered the line posted by stepping through the
possibilities after Rxf4. As I said, I discovered that this does indeed
work, though I only get scores close to 0. Still better than anything
else. Same for no. 84. I don't find Bg6, but after stepping through it,
I see it works. In no. 19, I took the trouble of following the forced
line after Rxf6 just to convince myself that it is not the obvious
solution, etc. etc.

I didn't spend more than a few minutes on each, and don't claim
scientific accuracy. I welcome any deeper analysis done by anyone, but,
since I have done this work, it would be a pity to just dismiss it.

Amir






This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.