Rybka v Joel Benjamin (Game 2)

[Graham Banks]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2


Match score: Rybka - 0.5 Benjamin - 1.5

Link to discussion of the game on the Rybka forum:
http://www.rybkaforum.net/cgi-bin/rybka ... id=1890#fp

[Dr.Ex]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2
Match score: Rybka - 0.5 Benjamin - 1.5

This match is ridiculous. After 7...Qa5/1...Qa5 white is of course totally winning. The GM played much too cautious and the game ended in a draw.

[Uri Blass]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2
Match score: Rybka - 0.5 Benjamin - 1.5

This match is ridiculous. After 7...Qa5/1...Qa5 white is of course totally winning. The GM played much too cautious and the game ended in a draw.

It is obvious that the GM has a different opinion(he could avoid repetition
and try to win but did not do it) and it seems that benjamin is afraid of losing and decided simply to play for a draw in every game even if he has a clear advantage.



Here is some analysis by rybka at move 38(or move 32 if we do not count the first 6 moves)

GM Benjamin - Rybka
[d]r1bq1rk1/6p1/p2b3p/1p1Pp3/4Pn2/4QN1P/PPR3PB/2R2B1K w - - 0 1

Analysis by Rybka 2.3.2a 32-bit :

38.Bxf4 Rxf4 39.g3
² (0.69) Depth: 5 00:00:00
38.Qc3 Qe7
± (0.72) Depth: 5 00:00:00
38.Qc3 Qe7 39.Bg1
± (0.72) Depth: 6 00:00:00 12kN
38.Qc3 Qe7 39.Bg1 b4
± (0.75) Depth: 7 00:00:00 18kN
38.Qc3 Qe7 39.Bg1 b4 40.Qb3
± (0.77) Depth: 8 00:00:00 33kN
38.Qc3 Qe7 39.Bg1 b4 40.Qb3 Bd7
± (0.73) Depth: 9 00:00:01 69kN
38.Qc3 Qe7 39.Bg1 b4 40.Qb3 Bd7 41.Bc5
± (0.75) Depth: 10 00:00:02 141kN
38.Qc3 Qe7 39.Bg1 b4 40.Qb3 Bd7 41.Bc5 a5
± (0.76) Depth: 11 00:00:04 220kN
38.Qc3 Qe7 39.Bg1 b4 40.Qb3 Bd7 41.Bc5 a5 42.Bxd6
± (0.73) Depth: 12 00:00:07 402kN
38.Nd2 Bd7 39.Nb3 Rc8 40.Nc5 Qb6 41.Bg1 Bxc5 42.Rxc5 Rxc5 43.Rxc5 Qa5
± (0.74) Depth: 12 00:00:13 697kN
38.Nd2 Bd7 39.Nb3 Rc8 40.Nc5 Qb6 41.b4 Rc7 42.Bg1 Bc8
± (0.85) Depth: 13 00:00:34 1626kN
38.Nd2 Qf6 39.Nb3 h5 40.Nc5 h4 41.Be2 Qg5 42.Bxf4 exf4 43.Qf3 Ra7
± (0.82) Depth: 14 00:00:59 2881kN
38.Nd2 Qf6 39.Nb3 h5 40.Qe1 h4 41.Nc5 Qd8 42.Bxf4 Rxf4 43.Rc3 Rb8 44.Qe3
± (0.85) Depth: 15 00:01:43 4859kN
38.Nd2 Qf6 39.Nb3 Qg6 40.Nc5 h5 41.Bg3 Qg5 42.h4 Qg6 43.Bd3 Bg4 44.Nb7
± (0.89) Depth: 16 00:05:30 14427kN

(Uri, MyTown 07.08.2007)


Uri

[Dr.Ex]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2
Match score: Rybka - 0.5 Benjamin - 1.5

This match is ridiculous. After 7...Qa5/1...Qa5 white is of course totally winning. The GM played much too cautious and the game ended in a draw.

It is obvious that the GM has a different opinion(he could avoid repetition
and try to win but did not do it) and it seems that benjamin is afraid of losing and decided simply to play for a draw in every game even if he has a clear advantage.

I don't criticize him for taking the draw in the final position.
After 1...Qa5 you have to play 2.Nc3 like a Man, beeing slighty ahead in development and of course a full pawn up. Instead we see him pussyfooting around with 2.c3,3.d3.

[Terry McCracken]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2
Match score: Rybka - 0.5 Benjamin - 1.5

This match is ridiculous. After 7...Qa5/1...Qa5 white is of course totally winning. The GM played much too cautious and the game ended in a draw.

It is obvious that the GM has a different opinion(he could avoid repetition
and try to win but did not do it) and it seems that benjamin is afraid of losing and decided simply to play for a draw in every game even if he has a clear advantage.

I don't criticize him for taking the draw in the final position.
After 1...Qa5 you have to play 2.Nc3 like a Man, beeing slighty ahead in development and of course a full pawn up. Instead we see him pussyfooting around with 2.c3,3.d3.

Would you like to take his place?

[Dr.Ex]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2
Match score: Rybka - 0.5 Benjamin - 1.5

This match is ridiculous. After 7...Qa5/1...Qa5 white is of course totally winning. The GM played much too cautious and the game ended in a draw.

It is obvious that the GM has a different opinion(he could avoid repetition
and try to win but did not do it) and it seems that benjamin is afraid of losing and decided simply to play for a draw in every game even if he has a clear advantage.

I don't criticize him for taking the draw in the final position.
After 1...Qa5 you have to play 2.Nc3 like a Man, beeing slighty ahead in development and of course a full pawn up. Instead we see him pussyfooting around with 2.c3,3.d3.

Would you like to take his place?

I could hardly do worse.

[Terry McCracken]

Rybka started without its c7 pawn.
The first 6 moves were obviously pre-entered in order to achieve the correct starting position, so set up the board without the c7 pawn and start from move 7.

[Event ""]
[Site "chessplanet.ru"]
[Date "2007.8.7"]
[Round ""]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "1/2-1/2"]
[Eco ""]
[Annotator ""]
[Source ""]

1.Na3 c5 2.Nf3 c4 3.Nxc4 Nh6 4.Na3 Ng4 5.Ng1 Nf6 6.Nb1 Ng8 7.e4
Qa5 8.c3 Nf6 9.d3 Nc6 10.Nf3 e5 11.Bg5 Be7 12.Nbd2 d6 13.Be2
O-O 14.O-O Qc7 15.h3 h6 16.Bh4 Re8 17.Re1 a6 18.Bf1 b5 19.d4
exd4 20.cxd4 Qb6 21.d5 Ne5 22.Rc1 Bb7 23.Nxe5 dxe5 24.Bg3 Bd6
25.Nf3 Bb4 26.Re2 Bd6 27.Qd3 Nh5 28.Bh2 Qd8 29.Rec2 f5 30.Nd2
Nf6 31.f3 fxe4 32.fxe4 Nh5 33.Nf3 Nf4 34.Qe3 Rf8 35.Kh1 Bc8 36.Rc6
Bb7 37.R6c2 Bc8 38.Rc6 Bb7 39.R6c2 { Draw by repetition} 1/2-1/2
Match score: Rybka - 0.5 Benjamin - 1.5

This match is ridiculous. After 7...Qa5/1...Qa5 white is of course totally winning. The GM played much too cautious and the game ended in a draw.

It is obvious that the GM has a different opinion(he could avoid repetition
and try to win but did not do it) and it seems that benjamin is afraid of losing and decided simply to play for a draw in every game even if he has a clear advantage.

I don't criticize him for taking the draw in the final position.
After 1...Qa5 you have to play 2.Nc3 like a Man, beeing slighty ahead in development and of course a full pawn up. Instead we see him pussyfooting around with 2.c3,3.d3.

Would you like to take his place?

I could hardly do worse.

Well see if you can get a match? I didn't know we had a GM in our midst

I honestly think playing two games a day is too much. In fact making it an odds match may actually benefit the computer rather than the human.