Hiarcs forum v Rybka Forum Secret Thread.

PortCitySlim · Post by **PortCitySlim** » Mon Jul 07, 2008 6:53 am

19.g3

Dark Horse · Post by **Dark Horse** » Mon Jul 07, 2008 8:00 am

Rybka 2.3.2a MP 25 ply on the Quad after only 1hour and 25 mins!! starting from 19.g3

19...Ng4 20.Rc1 N4e5 21.Bb1 Rc8 22.Rxc8+ Qxc8 scoring (-0.07)

Eric Hallsworth · Post by **Eric Hallsworth** » Mon Jul 07, 2008 9:10 am

Hi All

I'm with Harvey on the 19.e5 issue, his line looks right ...Nd5 20.Bxg6 hxg6 21.b5 Rc8 and now it's hard to see anything good for White and computer evaluations are dropping

I think it's between 19.g3 which I see quite a few favour, prophylactic stopping Nf4. But I also wonder if 19.b5 is possible, though then I guess Black may well play 19...Nf4 and then we'd have to take it, so 20.Bxf4 Qxf4 and now possible 21.e5 would be okay

I'll spend a bit longer on it and vote later

Cheers - Eric

Shaun Brewer · Post by **Shaun Brewer** » Mon Jul 07, 2008 10:35 am

Current vote 19. g3

Wardy · Post by **Wardy** » Mon Jul 07, 2008 11:08 am

Eric Hallsworth wrote:Hi All

I'm with Harvey on the 19.e5 issue, his line looks right ...Nd5 20.Bxg6 hxg6 21.b5 Rc8 and now it's hard to see anything good for White and computer evaluations are dropping

I think it's between 19.g3 which I see quite a few favour, prophylactic stopping Nf4. But I also wonder if 19.b5 is possible, though then I guess Black may well play 19...Nf4 and then we'd have to take it, so 20.Bxf4 Qxf4 and now possible 21.e5 would be okay

I'll spend a bit longer on it and vote later

Cheers - Eric

Hi Eric,

Are you going to publish the game in SS once it's done?

Best regards

Paul

Eric Hallsworth · Post by **Eric Hallsworth** » Mon Jul 07, 2008 11:54 am

Hi again

Not sure about publishing it in Selective Search as it's not really a computer game... or perhaps it is a computer game involving many different engines and just a few humans ;-\

Anyway I'm voting for 19.g3

I think my other line 19.b5 Nf4 (Bc5 may also be possible) 20.Bxf4 Qxf4 21.e5 (the best I can find) but Nd5 and I think that's looking better for Black

I'm still looking at it, but please count me in for 19.g3 if I don't get chance to e-mail again

Thanks - Eric

Post by **Steve B** » Mon Jul 07, 2008 12:17 pm

Eric Hallsworth wrote:
Not sure about publishing it in Selective Search as it's not really a computer game... or perhaps it is a computer game involving many different engines and just a few humans ;-\

how about this?
if we win or draw..you publish the game
in the highly unlikely event we lose...no need to publish it

Seems Fair To Me Regards
Steve

Post by **Harvey Williamson** » Mon Jul 07, 2008 1:07 pm

One line we need to look out for is:

19.g3 Rc8 20.Re1 Bd8!? 21.e5 Nd5 22.Be4 Nc3

Does 20.Nb3 work here?

Post by **Harvey Williamson** » Mon Jul 07, 2008 2:38 pm

Harvey Williamson wrote:One line we need to look out for is:

19.g3 Rc8 20.Re1 Bd8!? 21.e5 Nd5 22.Be4 Nc3

Does 20.Nb3 work here?

In fact this looks promising showing a small + for white with Zappa:

1. g3 Rc8 2. Nb3 d5 3. e5 Ne4 4. b5 h6 (4... Bd8 5. Ba5 Nxe5 6. Nxe5 Qxe5 7.
Bxd8 Rxd8 9.Na5) 5. Ba5 h5 6. Qb2 h4 7. Re1 *

can black spoil this with 4.b5 Nxd2

Eric Hallsworth · Post by **Eric Hallsworth** » Mon Jul 07, 2008 2:38 pm

Hi again

I keep looking at the empty g2 square after 19.g3, and the long diagonal a8-h1, and the bishop on b7, and I'm not so keen on it.

I think the main line is 19.g3 Rc8 20.Re1, and now Black has 20...d5, 20...Qa7 or 20...Bd8 which all look quite good for them

I wonder if 19.Re1 is best?! Against anything other than 19.g3 or 19.e5 they are likely to play 19...Nf4, and if so 20.Bxf4 Qxf4, and I'm looking for a decent 21st without much enthusiasm?! Still I prefer the look of this, and maybe a quiet 21.h3 than the g3 line at present

How long have we got please?

In the meantime I change my vote to 19.Re1

Cheers - Eric

Dylan Sharp · Post by **Dylan Sharp** » Mon Jul 07, 2008 3:26 pm

Eric Hallsworth wrote:How long have we got please?

In the meantime I change my vote to 19.Re1

We have officially about 35 hours to vote, and realistically about 33 (I waste 2 hours to avoid possible emergencies and/or loses on time.)

Anyway, I still have yet to vote, I'll check Re1 and g3.

Dylan Sharp · Post by **Dylan Sharp** » Mon Jul 07, 2008 5:32 pm

Current lines for g3:

19. g3 Rc8 20. e5 Ng4 21. Re1 Bxb4 22. Bxb4 Bxf3 23.Nxf3 Qxb4 24.Rd1 f6 25.Bb5 Nf8 26.Bxd7 Nxd7 27.Rxd7 Qa4 28.Rd4 Qa1+ 29.Rd1 Rc1 30.Rxc1 Qxc1+ (0.07)

19. g3 Rc8 20. Re1 d5 21. exd5 Bxd5 22. b5 Qb7 23.Bg5 Bb4 24.Rb1 Bd6 25.b6 Ra8 26.Bxf6 gxf6 27.Bc4 Be4 28.Bd3 Bd5 (0.00)

19. g3 Rc8 20. Re1 Bd8 21. e5 Nd5 22. Ba6 Bxa6 23.Qxa6 Bb6 24.Qd3 h5 25.h3 Bxd4 26.Qxd4 Nge7 27.Ra1 Nf5 28.Qa7 Qb5 29.g4 hxg4 30.hxg4 Qc4 (0.09)

Dark Horse · Post by **Dark Horse** » Mon Jul 07, 2008 5:43 pm

last I checked before the power outtage at 26 ply Rybka still prefered 19...Ng4 after 19.g3

is the analysis by Rybka different now ?

fallstalk · Post by **fallstalk** » Mon Jul 07, 2008 6:30 pm

pv 19.Ra1 Ne5 20.Bf4 Nxf3+ 21.Qxf3 Bd6 22.Bxd6 Qxd6 23.Nc2 Ng4 24.e5 Nxe5 25.Bxh7+ Kxh7 26.Qxb7 Qc6 27.Qxc6 dxc6 28.Ra7 Rd8 29.Kf1 +5 Crafty 3hours don't know if any interest in this analysis of 19.Ra1

rhombus · Post by **rhombus** » Mon Jul 07, 2008 6:37 pm

19.g3

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