Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Position n°100 of the Aemis1 test

Author: Vincent Lejeune

Date: 06:27:07 08/19/99

Go up one level in this thread


On August 18, 1999 at 14:33:50, Dann Corbit wrote:

>On August 18, 1999 at 13:01:52, Dann Corbit wrote:
>
>>On August 18, 1999 at 12:33:59, Vincent Lejeune wrote:
>>
>>>Position n°100 of the Aemis 1 test is reported as unsolved at Shep's Site.
>>>
>>>I've test it with Rebel10c (stronger setting), it find the keymove (Ng4!) after
>>>21 sec on my Celeron@450 Mhz with 100 Mbyte hashtable.
>>OK, dumb question, is Ng4 actually better than Qh4 which has a very good eval?
>Here are some C.A.P. records.  They favor Qh4.  If that is wrong, I suspect one
>of two things:
>0. Zugzwang
>1. Positional
>
>5bk1/1r4r1/1pRp1n2/p2Pp2p/P3Pp2/1QB2PqN/1P2BNp1/6K1 b - - acd 13; ce 144; pv Qh4
>Bxe5 dxe5 d6+ Kh7 Qe6 Rbf7 Rc8 Nd7 Bb5 Nc5 Qxe5 Rf6 Rc6; pm Qh4; bm Ng4; id
>"Aemis Test Suite No.100";
>
>5bk1/1r4r1/1pRp1n2/p2Pp2p/P3Pp2/1QB2PqN/1P2BNp1/6K1 b - - acd 15; acn 622115281;
>acs 5001; ce 57; pv Qh4 Bxe5 dxe5 d6+ Kh7 Qe6 Rbf7 Qxe5 Nd7 Qd5 Kh8 Bd3 Nf6 Qd4
>Qg3 Bc4;


Rebel 10c analysis:

After Qh4, 6 min, 50 Mnodes, best move Rc6xd6, score : -1.90
After Ng4, 5 min, 35 Mnodes, best move f3xg4 , score : -3.49

The theme of the position is : strong attack (queen+2 passed pawn+rook) on white
king.

It's strange that crafty don't see that on depth 15

What's the crafty's evaluation when you play 1..Ng4 on board ?



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.