CCC Practice Game

gerold · Post by **gerold** » Mon Sep 07, 2009 3:39 am

Matthias Gemuh wrote:67 ... Ba3

... cannot be attacked there

Matthias.

Ba3 also.

Best,

Gerold.

Spock · Post by **Spock** » Mon Sep 07, 2009 7:08 am

I migt as well stick with Ba3 as my vote

Graham Banks · Post by **Graham Banks** » Mon Sep 07, 2009 8:00 am

I'll go for 67.....Rc1.

Haven't had a chance to check properly, but is the following KP v K ending drawn (not that I'm expecting it to happen)?

67....Rc1; 68.Kh4, Bxg3+; 69.Kxg3, Rg1+; followed by Rxg4 and Kxg7

Steve B · Post by **Steve B** » Mon Sep 07, 2009 11:46 am

Having delegated Blacks Bishop to the edge of the board.. the R30's Bishop takes control with..
68.Be5

http://www.talkchess.com/forum/viewtopic.php?t=28922

Centralized Regards Regards
Steve

Spock · Post by **Spock** » Mon Sep 07, 2009 11:51 am

That last move was a tough one. There were so many choices. I did analyse this with 5 top engines for over an hour each on my quad, to check my choice was not a blunder, and got 4 different moves

Ba3 - Zappa (nearly 2 hrs)
Rc1 - Shredder (one and a half hours)
Be7 - Naum, Rybka (naum about 1.5 hrs, Rybka about 2.5 hrs)
Bb4 - Hiarcs (more than 3 hrs)

The Tasc response of Be5 was anticipated by Zappa following Ba3.

Steve B · Post by **Steve B** » Mon Sep 07, 2009 12:16 pm

Spock wrote:That last move was a tough one. There were so many choices. I did analyse this with 5 top engines for over an hour each on my quad, to check my choice was not a blunder, and got 4 different moves

Ba3 - Zappa (nearly 2 hrs)
Rc1 - Shredder (one and a half hours)
Be7 - Naum, Rybka (naum about 1.5 hrs, Rybka about 2.5 hrs)
Bb4 - Hiarcs (more than 3 hrs)

The Tasc response of Be5 was anticipated by Zappa following Ba3.

thats 11.5+ Hrs of Engine analysis
the R30 will consider that a compliment when i let it know

Regards
Steve

Spock · Post by **Spock** » Mon Sep 07, 2009 1:02 pm

Steve B wrote:thats 11.5+ Hrs of Engine analysis
the R30 will consider that a compliment when i let it know
Regards
Steve

Indeed. I really struggled with this move. I turned to some engines for help, and they were no help at all !! I was delighted though that my favourite Zappa confirmed what I was favouring

Oh yes - and that is 11.5 hrs on 4 fairly quick CPU cores

Steve B · Post by **Steve B** » Mon Sep 07, 2009 1:24 pm

Spock wrote:
Oh yes - and that is 11.5 hrs on 4 fairly quick CPU cores

so each core can analyze at the same time using a different engine?
all in all you only needed 2-3 hours total ..real time .. to get the 4 engines to check your move and not 11.5+ Hrs real time ?
if so ..
amazing stuff regards
Steve

Spock · Post by **Spock** » Mon Sep 07, 2009 1:41 pm

No, it was 11.5 hrs in total - each engine in turn, using 4 cores each. Although I spread the load across two machines actually

I guess in terms of CPU time, that 11.5 hrs is probably two weeks of Tasc time...

tano-urayoan · Post by **tano-urayoan** » Mon Sep 07, 2009 1:47 pm

We must be careful with the use of engines in this position. Our goal is to achieve some kind of fortress(which engines does not understand) our sacrifice our bishop for one pawn and capture the last one achieving a theoretical KRB v KR draw, also beyond the scope of engines.

This Ba3 move looks silly it does not help any of the 2 methods, we should establish a plan for either mode of drawing.

CCC Practice Game

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