Not logged inRybka Chess Community Forum
Up Topic Rybka Support & Discussion / Rybka Discussion / Game 5. 1. d4 ... Rybka won
- - By Victor Zakharov (*****) [ru] Date 2008-01-05 19:26
[White "Benjamin"]
[Black "Rybka"]
[WhiteElo "2575"]
[BlackElo "3100"]
[Result "0-1"]
[GameID "263"]
[UniqID "246283"]
[WhiteClock "0:01:27"]
[BlackClock "0:35:08"]
[Stamp "1569"]
[LastMoves "47.Qf5 a5 -5.90"]

1.d4 Nf6 2.Nf3 c5 3.d5 b5 4.Bg5 Qb6 5.a4 b4 6.c4 h6 7.Bh4 g5 8.Bg3 Bg7 9.a5 Qd8 10.Nbd2 d6 11.e4 Nh5 12.Ra2 b3 13.Nxb3 Na6 14.Qb1 f5 15.exf5 O-O 16.Bd3 Nb4 17.Ra4 Nxd3+ 18.Qxd3 Qe8 19.Ra2 Bxf5 20.Qe2 Rb8 21.Nfd2 Qg6 22.Nc1 Rbe8 23.O-O Nxg3 24.hxg3 e6 25.b3 exd5 26.Qd1 d4 27.Nf3 Bg4 28.Rd2 Qh5 29.Rd3 Re7 30.Re1 Rxe1+ 31.Qxe1 Qg6 32.Nh2 Re8 33.Qd2 Bf5 34.Nf3 Bxd3 35.Nxd3 Qe6 36.Kf1 Bf6 37.Qd1 Bd8 38.a6 Ba5 39.Ng1 Rb8 40.Nh3 Rb6 41.Kg1 Rxa6 42.Qf3 Bd8 43.Qa8 Qe7 44.f3 Ra3 45.Nhf2 Rxb3 46.Qd5+ Kg7 47.Qf5 a5 0-1
Parent - - By Hetman (*****) Date 2008-01-05 19:43
Very good opening choice by Black - Benko Gambit.
Rgds
Hetman
Parent - By BB (****) [gb] Date 2008-01-05 20:41

> Very good opening choice by Black - Benko Gambit.


Especially without the gambit of the pawn. :) I too was impressed by 12... b3 when replaying the game. Joel's 6. c4 was perhaps an attempt to block the Q-side I guess, but it never materialised.
Parent - - By Dadi Jonsson (Silver) [is] Date 2008-01-05 20:02
Rybka played an amazing and unexpected move in this game. I'm sure that Joel didn't see it coming. Here is the position after 12. Ra2:

rnbqk2r/p3ppb1/3p3p/P1pP2pn/1pP1P3/5NB1/RP1N1PPP/3QKB1R b Kkq -


Rybka sacrificed a pawn with 12...b3!! and got the initiative. White never managed to recover. Do other engines see this move?

rnbqk2r/p3ppb1/3p3p/P1pP2pn/2P1P3/1p3NB1/RP1N1PPP/3QKB1R w Kkq -
Parent - By BB (****) [gb] Date 2008-01-05 20:49

> Rybka sacrificed a pawn with 12...b3!! and got the initiative. White never managed to recover. Do other engines see this move?


Toga 1.2 with 3-way MultiPV has it as 2nd best at -0.16 at depth 12, versus -0.29 for Nxg3. At depth 14, b3 is still in 2nd at -0.19 versus -0.31, but at depth 15, it sours on b3, rating it at 0.00.
Parent - - By turbojuice1122 (Gold) [us] Date 2008-01-05 22:17
If I was Joel, especially against a computer, I would have played 12.b3--anything wrong with this move?  Yes, I know that it looks to give black an "overwhelming position" after the knight for bishop trade, but I think computers might overestimate the benefit of that space advantage...
Parent - By Dadi Jonsson (Silver) [is] Date 2008-01-05 22:50 Edited 2008-01-06 11:43

> I would have played 12.b3--anything wrong with this move?


I think it might be hard to defend the a5 pawn after 12. b3. Maybe Joel wanted to keep b3 free for the knight so it could move there to protect the pawn if needed.

Edit: And of course there is 12...Bxa1 if White plays b3 on the twelfth move.
Parent - - By blubb (*) [de] Date 2008-01-05 20:16
Impressive game by Rybka. I am not very familiar with openings theory but I did not like the white moves 9. a5 and 12. Ra2 very much. After them, most of the following moves of white seemed to be forced.

I wonder if Rybka 2.3.2a would play the pawn sac on b3?! Or is this 12th move the result of the antihuman settings? If so, it is nice work.
Parent - By turbojuice1122 (Gold) [us] Date 2008-01-05 20:17
They were "out of book" beginning with Joel's novelty 6.c4!?
Parent - By Victor Zakharov (*****) [ru] Date 2008-01-05 20:23
According to game logs only latest version of Rybka sees 12...b3.
23 seconds was spent for the move.

12...Nd7 13.Bd3 Nxg3 14.hxg3 O-O 15.O-O Rb8 16.Qb3 e6 17.Ne1 Qc7 {Rybka v2.3.2a (0:00.02)} {-0.28|d13}  *
12...O-O 13.Be2 Nd7 14.O-O Re8 15.Re1 Rb8 16.Bd3 Ba6 17.Qc2 {Anti-Human 1 (0:00.03)} {-0.41|d14}  *
12...b3 13.Nxb3 Na6 14.Qd2 Rb8 15.Ra3 Nb4 16.Be2 Nxg3 17.hxg3 f5 18.e5 {Update Anti-human Rybka (0:00.01)} {-0.54|d14}  *
Parent - By Debaser (***) Date 2008-01-05 22:25
Congratulations Rybka team, this was a nice win ;) More games like this.

Strange opening for me, chessbase calls this Schmid Benoni. At the beginning I thought that this was going to be a closed game like the previous, with those pawns chains forming. But with 12...b3 and 14...f5, Rybka started to open it.

GM Benjamin played well, but was outplayed sistematically, Rybka is too much for anybody.
Up Topic Rybka Support & Discussion / Rybka Discussion / Game 5. 1. d4 ... Rybka won

Powered by mwForum 2.27.4 © 1999-2012 Markus Wichitill