I have a question about the grunfeld defense in chess..?

Question

Okay, so the grunfeld defense begins with:

1. d4 Nf6 2. c4 g6 3. Nc3 d5

I know that the exchange variation is the main line, but sometimes people play;

4. Bf4 Bg7 5. e3 O-O

There is a gambit that white can accept and most club players will:

6. cxd5 Nxd5 7. Nxd5 Qxd5 8. Bxc7

What does black get out of giving away they pawn?

Thanks!

Answer 1

Black plays Na6. Plan to gain the pawn with Qxg2,

and undouble the a6-pawn by advancing it.

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8.Bxc7 Na6 9.Bxa6:

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After 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7

5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7 Na6 9.Bxa6

continue with

9... Qxg2 10.Qf3 Qxf3 11.Nxf3 bxa6.

The main line of ECO D84 Line 5 note 30 is the 40 move draw:

Levente Lengyel vs Svetozar Gligorić, Enschede zt 1963.

Your complete game score and interactive Java Board is at:

http://www.chessgames.com/perl/chessgame...

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8.Bxc7 Na6 9.Bg3:

===============

ECO D84 Line 4 note 20 shows white playing 9.Bg3 instead of 9.Bxa6.

Black infiltrates white's position at c2 with ... Bf5, ... Rac8-c2, and Qb3-c3+.

After 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7

5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7 Na6 9.Bg3

continue with

9... Bf5 10.a3 Rac8 11.Nf3 Rc2 12.b4 Qb3 13.Bxa6 Qc3+ 14.Kf1 bxa6.

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Sources:

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Hundreds of other games that one can play with the interactive Java Chessboard

are at the two (D84 & D83) ChessGames.com sites listed here:

Grünfeld Gambit Accepted (ECO code D84)

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7

http://www.chessgames.com/perl/chessopen...

Grünfeld Gambit Declined (ECO code D83)

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O

http://www.chessgames.com/perl/chessopen...

This is also a source: Lines with 4.Bf4 and the Grünfeld Gambit

http://en.wikipedia.org/wiki/Gr%C3%BCnfe...

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O

is known as the Grünfeld Gambit.

(ECO code D84) White can accept the gambit by playing

6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7,

(ECO code D83) White can decline the gambit by playing

6.Qb3 or 6.Rc1. In both lines, characteristic for Black is

the 6...c5 counter-thrust or the defensive 6...c6.