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Up Topic The Rybka Lounge / Correspondence Chess / Hiarcs vs. Rybka Forum Challenge
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Parent - - By pokerpawn (***) [be] Date 2008-07-12 17:39
my idea 20. ... N4e5
this is unofficial , just my idea , not to be taken as anywhere near the official rybka move  ;)
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-12 18:33
An interesting idea, and fairly consistent with playing 19...Ng4. :-)  Perhaps you should join the Warriors and discuss whether it mates white quicker than the other 12 moves we're analyzing. :-)
Parent - - By pokerpawn (***) [be] Date 2008-07-12 21:31
that's great to hear everyone is so hard at work at it :) but have you reached any decision yet? ;)
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-12 21:32
Yes--we have decided that we are completely winning. ;-)
Parent - - By pokerpawn (***) [be] Date 2008-07-12 21:32
hahaha thought it was just an inkling better for black :)
Parent - By NATIONAL12 (Gold) [gb] Date 2008-07-12 21:48 Edited 2008-07-12 21:52
nobody doubts black is better,we keep hitting TBS all the time,we play to make sure that white cannot go down these lines.
Parent - - By jejega (**) [gb] Date 2008-07-12 20:23
Rybka seems to like 20...Rc8
Parent - - By NATIONAL12 (Gold) [gb] Date 2008-07-12 21:14
very very interesting.we need you in the team,we only have 50 comps and 4 humans playing for us,plus 6 in the sentry box guarding the entrance.
Parent - - By plicocf (***) [br] Date 2008-07-13 01:29 Edited 2008-07-13 01:31
National, 50 comps? 4 humans? Turbo said that they analyses much moves.
After read this my conclusion is: draw. ;-)

Paulo Soares
Parent - - By jejega (**) [gb] Date 2008-07-13 01:51
Rybka is a warrior so I hope there won't be any draw. Anyway how come people say it's balanced in this very complicated position?
Parent - - By plicocf (***) [br] Date 2008-07-13 07:08
I was just joking with National and Turbo. I agree with you, it´s a
complex game.

Paulo Soares
Parent - By jejega (**) [gb] Date 2008-07-13 15:53
Muchas gracias, Paulo. Mon ami, Rybka est le meilleur programme au monde.
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-13 03:00
Current game: 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6

5rk1/1b1pbppp/3qp1n1/8/1P1NP1n1/3B1NP1/3BQP1P/2R3K1 w - - 0 21
Parent - - By Milton (***) [us] Date 2008-07-13 16:00
Rybka's top candidate moves for White in this position are Bb1 and b5.  Personally, the pawn push would make me nervous, but then again, I am not a good chess player.  Ryka says however, that both moves lead to a ....

Draw Regards,
Milton

5rk1/1b1pbppp/3qp1n1/8/1P1NP1n1/3B1NP1/3BQP1P/2R3K1 w - - 0 1


Analysis by Rybka 2.3.2a 64 bit mp :

21.Nb5 Qb6
  =  (0.07)   Depth: 5   00:00:00
21.b5 Ra8
  =  (0.16)   Depth: 5   00:00:00
21.b5 Ra8 22.Bc3
  =  (0.05)   Depth: 6   00:00:00  28kN
21.b5 Ra8 22.Bc2 h6
  =  (0.07)   Depth: 7   00:00:00  50kN
21.b5 Ra8 22.Bc2 h6 23.Bb3
  =  (0.05)   Depth: 8   00:00:00  82kN
21.b5 Ra8 22.Bc2 h6 23.Bb3 N6e5
  =  (0.02)   Depth: 9   00:00:00  150kN
21.b5 Ra8 22.Bc2 Bf6 23.Bc3 Rc8 24.Qd2
  =  (-0.04)   Depth: 10   00:00:00  357kN
21.Rc5 Ra8 22.Bc3 Qb6 23.Rb5 Qc7 24.Qc2
  =  (0.00)   Depth: 10   00:00:01  656kN
21.b5 Ra8 22.Bc2 Bf6 23.Bc3 Rc8 24.Bb2 Qb4
  =  (-0.05)   Depth: 11   00:00:02  1226kN
21.b5 Ra8 22.Bc2 Bf6 23.Bc3 Rc8 24.Bb2 Qb4
  =  (-0.05)   Depth: 11   00:00:02  1226kN
21.b5 Ra8 22.Bc2 Bf6 23.h3 N4e5 24.Nxe5 Nxe5 25.Be3 Ra3
  =  (-0.02)   Depth: 12   00:00:04  1899kN
21.b5 Ra8 22.Bc2 Bf6 23.h3 N4e5 24.Be3 Ra3 25.Rd1 Qc7
  =  (-0.01)   Depth: 13   00:00:07  2859kN
21.b5 Ra8 22.Bc2 Bf6 23.h3 N4e5 24.Be3 Rc8 25.Rd1 h6 26.Kg2
  =  (-0.06)   Depth: 14   00:00:08  3823kN
21.b5 Ra8 22.Bc2 h5 23.Nb3 Ra2 24.Bb1 Rb2 25.Bc2 N6e5 26.Nxe5 Qxe5 27.f3
  =  (-0.12)   Depth: 15   00:00:24  10131kN
21.Bb1 Ra8 22.Bc3 Qb6 23.h3 N4e5 24.b5 Rc8 25.Bb2 Rxc1+ 26.Bxc1 h5 27.Bb2 h4
  =  (-0.08)   Depth: 15   00:00:47  20585kN
21.Bb1 Ra8 22.h3 N4e5 23.Kg2 Qb6 24.b5 Ba3 25.Rd1 Ra4 26.Bc3 Rc4 27.Ba1
  =  (-0.11)   Depth: 16   00:00:59  25242kN
21.b5 N4e5 22.Bb1 Ra8 23.Be3 Ng4 24.Bd2 Qb6 25.h3 N4e5 26.Bc2 Ra3 27.Be3 Nxf3+
  =  (-0.06)   Depth: 16   00:01:17  32385kN
21.b5 N4e5 22.Bc2 f5 23.Rd1 f4 24.Bc1 Nxf3+ 25.Nxf3 Qc7 26.Kg2 h5 27.Bb2 fxg3
  =  (-0.08)   Depth: 17   00:01:30  37461kN
21.b5 N4e5 22.Bb1 Ra8 23.Rd1 Qa3 24.Bc1 Qa4 25.Bb2 Qb4 26.Nxe5 Nxe5 27.Rc1 Bc5
  =  (0.00)   Depth: 18   00:03:03  75524kN
21.b5 N4e5 22.Bb1 Ra8 23.Rd1 Qa3 24.Bc1 Qa4 25.Bb2 Qb4 26.Nxe5 Nxe5 27.Rc1 Bc5
  =  (0.00)   Depth: 19   00:03:52  96085kN
21.b5 N4e5 22.Bb1 f5 23.Bc3 f4 24.Bb2 Bd8 25.Nxe5 Nxe5 26.Rd1 Qe7 27.Nf3 Nxf3+
  =  (-0.06)   Depth: 20   00:06:11  155mN
21.b5 N4e5 22.Bb1 f5 23.Bc3 Rc8 24.exf5 Bxf3 25.Nxf3 Qa3 26.Rc2 Rxc3 27.Nxe5 Nxe5
  =  (-0.09)   Depth: 21   00:13:30  362mN
21.b5 N4e5 22.Bb1 f5 23.Bc3 Rc8 24.exf5 Bxf3 25.Nxf3 Qa3 26.Rc2 Rxc3 27.Nxe5 Nxe5
  =  (-0.11)   Depth: 22   00:28:11  724mN
21.Bb1 N4e5 22.h4 h5 23.Nxe5 Nxe5 24.Nb3 f5 25.Bf4 Qxb4 26.Bxe5 Qxb3 27.Ba2 Qb4
  =  (-0.05)   Depth: 22   00:52:20  1206mN
21.Bb1 N4e5 22.h4 h5 23.Nxe5 Nxe5 24.Nb3 f5 25.Bf4 Qxb4 26.Bxe5 Qxb3 27.Ba2 Qb4
  =  (-0.05)   Depth: 23   01:08:58  1587mN
21.Bb1 N4e5 22.b5 f5 23.Rd1 f4 24.Bc1 Qb8 25.Nxe5 Qxe5 26.Bb2 Qg5 27.Bc1 Ne5
  =  (-0.09)   Depth: 24   02:16:55  3311mN
21.Bb1 N4e5 22.b5 f5 23.Rd1 f4 24.Bc1 Qb8 25.Nxe5 Qxe5 26.Nb3 Qc3 27.Nd4 Qb4
  =  (-0.07)   Depth: 25   05:00:31  6945mN
21.Bb1 N4e5 22.b5 f5 23.Bc3 Rc8 24.exf5 Bxf3 25.Nxf3 Qa3 26.Rc2 Rxc3 27.Nxe5 Nxe5
  =  (-0.09)   Depth: 26   10:37:14  15393mN
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-13 16:29
That's because you only have Rybka 2.3.2a thinking only to depth 26. :-)
Parent - By Milton (***) [us] Date 2008-07-13 16:40

>That's because you only have Rybka 2.3.2a thinking only to depth 26. :-)


No doubt.  You won't see me challenging Lukas any time soon. :-)

Regards,
Milton
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-14 22:34
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1

5rk1/1b1pbppp/3qp1n1/8/1P1NP1n1/5NP1/3BQP1P/1BR3K1 b - - 0 21


We have also received word from the hamster cage that they are offering a draw!  Haha, we'll see how well that goes over... :-)
Parent - - By Milton (***) [us] Date 2008-07-15 00:34

>We have also received word from the hamster cage that they are offering a draw!  Haha, we'll see how well that goes over... 


Even though as a kibitzer I have been posting that Rybka thinks the game is even, I think that it is WAY too early to accept a draw, unless you guys just find this position uninteresting and not fun to continue.  I would be interested in the opinions of rated  players (which I am not) who are free to comment.  I am guessing the game at this point revolves around white's isolated pawn.  Is there any chance it will fall?  Is there any chance it can advance to the point of causing black problems?  I assume Larry is part of Rybka team, which is too bad because I would be interested in his analysis of the game.

Regards,
Milton
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-15 01:07
Larry, at least currently, seems to be a bit busy testing versions of Rybka 4 beta, so he hasn't been with us much after 20...Qd6!. :-)
Parent - - By Milton (***) [us] Date 2008-07-15 01:29

>Larry, at least currently, seems to be a bit busy testing versions of Rybka 4 beta, so he hasn't been with us much after 20...Qd6!. 


That's great!  If he's working on Rybka 4 beta, that must mean Rybka 3 is right on schedule. :-)

Looking for my credit card regards,
Milton
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-15 01:37
Well, that's my joke regarding the fact that July 15 won't be met, and a recent version seems to be doing a lot better than the one that is already over 100 points stronger than Rybka 2.3.2a.
Parent - By Uly (Gold) [mx] Date 2008-07-15 01:47

> and a recent version seems to be doing a lot better


Their "problem" is that they are in "crisis" - new versions keep coming everyday and they prove stronger and stronger, so they have a hard time finding one to release.
Parent - By plicocf (***) [br] Date 2008-07-15 01:36
Turbo, I thinked that you are playing to Hiarcs team.

Paulo Soares
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-15 09:49
Current game: 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1 N4e5

5rk1/1b1pbppp/3qp1n1/4n3/1P1NP3/5NP1/3BQP1P/1BR3K1 w - - 0 22
Parent - - By George Tsavdaris (****) Date 2008-07-16 09:26
Current game:
[Event "Forum Challenge"]
[Site "www.Hiarcs.net"]
[Date "2008.06.01"]
[Round "1"]
[White "Hiarcs Headbangers"]
[Black "Rybka Warriors"]
[Result "*"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 7. O-O b5 8.
Bd3 Bb7 9. Bf4 Rc8 10. Qe2 Bc5 11. Rac1 Nce7 12. Bd2 Ng6 13. b4 Be7 14. a4
Nf6 15. axb5 axb5 16. Nxb5 O-O 17. Rxc8 Qxc8 18. Nbd4 Qb8 19. g3 Ng4 20.
Rc1 Qd6 21. Bb1{Draw offer} N4e5{Rejection of the draw offer(obviously)} 22. h4{Draw offer}
5rk1/1b1pbppp/3qp1n1/4n3/1P1NP2P/5NP1/3BQP2/1BR3K1 b - h3 0 22


Hiarcs Headbangers team gave a second consecutive draw offer after our first rejection!
Totally inexcusable and bad manners from their part..... :-(

Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-16 09:54

>Totally inexcusable and bad manners from their part..... :-(


I think that in a friendly correspondence game, it is excusable :-)
Parent - By Banned for Life (Gold) Date 2008-07-16 09:55
OK, but still inexcusable in this game! :-)
Parent - By George Tsavdaris (****) Date 2008-07-16 10:01

>I think that in a friendly correspondence game, it is excusable :-)


For this extra reason(friendly) it's even more inexcusable. You don't poke fun at friends. Actually you do, but not in a Chess game. :-)
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-16 12:17
[Event "World Championship"]
[Site "Elista"]
[Date "2006.10.05"]
[Round "8"]
[White "Kramnik, Vladimir"]
[Black "Topalov, Veselin"]
[Result "0-1"]
[ECO "D47"]
[WhiteElo "2743"]
[BlackElo "2813"]
[PlyCount "104"]
[EventDate "2006.09.23"]
[EventType "match"]
[EventRounds "12"]
[EventCountry "RUS"]
[Source "ChessBase"]
[SourceDate "2006.11.15"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Be2 Bb7 9. O-O b4 10. Na4 c5 11. dxc5 Nxc5 12. Bb5+ Ncd7 13. Ne5 Qc7 14. Qd4 Rd8 15. Bd2 {Draw Offer} Qa5 16. Bc6 {Draw Offer} Be7 17. Rfc1 {Draw Offer} Bxc6 18. Nxc6 {Draw Offer} Qxa4 19. Nxd8 {Draw Offer} Bxd8 20. Qxb4 {Draw Offer} Qxb4 21. Bxb4 {Draw Offer} Nd5 22. Bd6 {Draw Offer} f5 23. Rc8 {Draw Offer} N5b6 24. Rc6 {Draw Offer} Be7 25. Rd1 {Draw Offer} Kf7 26. Rc7 {Draw Offer} Ra8 27.Rb7 {Draw Offer} Ke8 28. Bxe7 {Draw Offer} Kxe7 29. Rc1 {Draw Offer} a5 30. Rc6 {Draw Offer} Nd5 31. h4 {Draw Offer} h6 32. a4 {Draw Offer} g5 33. hxg5 {Draw Offer} hxg5 34. Kf1 {Draw Offer} g4 35. Ke2 {Draw Offer} N5f6 36. b3 {Draw Offer} Ne8 37. f3 {Draw Offer} g3 38. Rc1 {Draw Offer} Nef6 39. f4 {Draw Offer} Kd6 40. Kf3 {Draw Offer} Nd5 41. Kxg3 {Draw Offer} Nc5 42. Rg7 {Draw Offer} Rb8 43. Ra7 {Draw Offer} Rg8+ 44. Kf3 {Draw Offer} Ne4 45. Ra6+ {Draw Offer} Ke7 46. Rxa5 {Draw Offer} Rg3+ 47. Ke2 {Draw Offer} Rxe3+ 48. Kf1 {Draw Offer} Rxb3 49. Ra7+ {Draw Offer} Kf6 50. Ra8 {Draw Offer} Nxf4 51. Ra1 {Draw Offer} Rb2 52. a5 {Draw Offer} Rf2+ 0-1
Parent - - By Milton (***) [us] Date 2008-07-16 14:23
I don't think this example proves it's ok to ask repeatedly for draws.  It just proves that even world class chess players can sometimes act like jerks.
Parent - - By Kappatoo (****) [de] Date 2008-07-16 14:31
I think that's a joke (isn't it??).
Parent - - By Milton (***) [us] Date 2008-07-16 14:39

>I think that's a joke (isn't it??).


I meant that offering a draw after practically every move to the point where you lose is clearly bad sportsmanship.  The fact that it was done by a top GM does not excuse it. 

Milton
Parent - - By Kappatoo (****) [de] Date 2008-07-16 14:44
Yes, that I wanted to say: I assume that Kramnik didn't really do this, and turbo wanted to make a joke - but I'm not sure.
Parent - By Milton (***) [us] Date 2008-07-16 14:47

>Yes, that I wanted to say: I assume that Kramnik didn't really do this, and turbo wanted to make a joke - but I'm not sure.


Well, I have heard of GMs doing some pretty outrageous thinngs.  If this was a joke, it was a joke on me. :-)

Regards,
Milton
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-16 15:42
Yes, it's a joke. :-)  I took Kramnik's loss with the white pieces when playing against Topalov in the 2006 World Championship and put in draw offers for every one of his moves starting from his last "book" move.
Parent - - By wem511 (**) [us] Date 2008-07-19 13:59
3 days on this move, they must be stumped?
Parent - By turbojuice1122 (Gold) [us] Date 2008-07-19 14:06
They moved--I just haven't updated yet with all of the other news going on and lots of work to do outside of this and such.  They played 23.Be1?!
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-20 13:16
1.e4 c5 2.d4 cxd4 3. c3dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1{Draw offer} N4e5 22.h4{Draw offer} h5 23.Be1 Qb6

5rk1/1b1pbpp1/1q2p1n1/4n2p/1P1NP2P/5NP1/4QP2/1BR1B1K1 w - - 0 24
Parent - By turbojuice1122 (Gold) [us] Date 2008-07-20 23:07
Current game: 1.e4 c5 2.d4 cxd4 3. c3dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1{Draw offer} N4e5 22.h4{Draw offer} h5 23.Be1 Qb6 24.Nxe5 Nxe5

5rk1/1b1pbpp1/1q2p3/4n2p/1P1NP2P/6P1/4QP2/1BR1B1K1 w - - 0 25
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-21 13:57
Current game: 1.e4 c5 2.d4 cxd4 3. c3dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1{Draw offer} N4e5 22.h4{Draw offer} h5 23.Be1 Qb6 24.Nxe5 Nxe5 25.Qxh5 f6

5rk1/1b1pb1p1/1q2pp2/4n2Q/1P1NP2P/6P1/5P2/1BR1B1K1 w - - 0 26
Parent - - By Milton (***) [us] Date 2008-07-21 15:40

> 3. c3dxc3


Hi Turbo,

Just to let you know, this formatting error (i.e. no space between c3 and dxc3) keeps these moves from properly copying into Fritz gui.  I would fix it here, but I have no official standing in this match.

Milton
Parent - By ernest (****) [fr] Date 2008-07-21 16:17
Correcting the 3. c3dxc3 error:

1.e4 c5 2.d4 cxd4 3. c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1{Draw offer} N4e5 22.h4{Draw offer} h5 23.Be1 Qb6 24.Nxe5 Nxe5 25.Qxh5 f6
Parent - By turbojuice1122 (Gold) [us] Date 2008-07-21 17:39
Thanks for the notice--I actually have absolutely no idea how that got in there.
Parent - - By turbojuice1122 (Gold) [us] Date 2008-07-22 03:35 Edited 2008-07-22 15:36
Current game:  1.e4 c5 2.d4 cxd4 3. c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1{Draw offer} N4e5 22.h4{Draw offer} h5 23.Be1 Qb6 24.Nxe5 Nxe5 25.Qxh5 f6 26.Rd1 Bxb4

5rk1/1b1p2p1/1q2pp2/4n2Q/1b1NP2P/6P1/5P2/1B1RB1K1 w - - 0 27
Parent - - By Kappatoo (****) [de] Date 2008-07-22 07:19
There is still that "3. c3dxc3" error.
Parent - - By Uri Blass (*****) [il] Date 2008-07-22 09:34
Here is the correct game with no errors

1.e4 c5 2.d4 cxd4 3. c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.0-0 b5 8.Bd3 Bb7 9.Bf4 Rc8 10.Qe2 Bc5 11.Rac1 Nce7 12.Bd2 Ng6 13.b4 Be7 14.a4 Nf6 15.axb5 axb5 16.Nxb5 0-0 17.Rxc8 Qxc8 18.Nbd4 Qb8 19.g3 Ng4 20.Rc1 Qd6 21.Bb1{Draw offer} N4e5 22.h4{Draw offer} h5 23.Be1 Qb6 24.Nxe5 Nxe5 25.Qxh5 f6 26.Rd1 Bxb4
Parent - - By Uri Blass (*****) [il] Date 2008-07-22 10:01 Edited 2008-07-22 10:10
Here is some analysis at depth 19 and depth 20 after the expected line

27.Bxb4 Qxb4 28.f4

New game - Rybka 2.3.2a 32-bit
5rk1/1b1p2p1/4pp2/4n2Q/1q1NPP1P/6P1/8/1B1R2K1 b - f3 0 1


Analysis by Rybka 2.3.2a 32-bit :

1. = (0.00): 28...Qc3 29.Kh2 Nc4 30.Qe2 Ba6 31.Qd3 Qxd3 32.Rxd3 e5 33.fxe5 fxe5 34.Nf5 Rb8 35.Bc2
2. = (0.00): 28...Nd3 29.Bxd3 Qxd4+ 30.Kh2 Bc6 31.Kh3 Bxe4 32.Bxe4 Qxe4 33.Rxd7 Qh1+ 34.Kg4 Qc6 35.Rd2

(Uri, MyTown 22.07.2008)

depth 20

New game - Rybka 2.3.2a 32-bit
5rk1/1b1p2p1/4pp2/4n2Q/1q1NPP1P/6P1/8/1B1R2K1 b - f3 0 1


Analysis by Rybka 2.3.2a 32-bit :

1. = (-0.01): 28...Qc3 29.Kh2 Nc4 30.Qe2 Ba6 31.Qd3 Qxd3 32.Rxd3 e5 33.fxe5 fxe5 34.Nf5 Rb8 35.Bc2
2. = (0.00): 28...Nd3 29.Bxd3 Qxd4+ 30.Kh2 Bc6 31.Kh3 Bxe4 32.Bxe4 Qxe4 33.Rxd7 Qh1+ 34.Kg4 Qc6 35.Rd2

(Uri, MyTown 22.07.2008)
Parent - - By George Tsavdaris (****) Date 2008-07-22 10:39
Rybka 2.3.2a depth 21(the previous you gave was D20 so i guess this was D21) is stupid.
If you have a small pressure(black) on your opponent(white), you should not simplify as Rybka suggests in it's PV.
Parent - By Uri Blass (*****) [il] Date 2008-07-22 11:44
The was analysis with 2 options:
the first 2 options was for depth 19 and the next was for depth 20.

I stopped the analysis after rybka finished depth 20 so it did not get depth 21.

Uri
Parent - By Felix Kling (Gold) [de] Date 2008-07-22 15:36
fixed.
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