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Chess Opening Theory/1. d4/1...Nf6/2. c4/2...g6/3. Nc3/3...d5/4. cxd5/4...Nxd5/5. Na4

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Grünfeld Defence
a b c d e f g h
8a8 black rookb8 black knightc8 black bishopd8 black queene8 black kingf8 black bishopg8 black kingh8 black rook8
7a7 black pawnb7 black pawnc7 black pawnd7 black kinge7 black pawnf7 black pawng7 black kingh7 black pawn7
6a6 black kingb6 black kingc6 black kingd6 black kinge6 black kingf6 black kingg6 black pawnh6 black king6
5a5 black kingb5 black kingc5 black kingd5 black knighte5 black kingf5 black kingg5 black kingh5 black king5
4a4 white knightb4 black kingc4 black kingd4 white pawne4 black kingf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 black kinge3 black kingf3 black kingg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 black kingd2 black kinge2 white pawnf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 black kingc1 white bishopd1 white queene1 white kingf1 white bishopg1 white knighth1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

rnbqkb1r/ppp1pp1p/6p1/3n4/N2P4/8/PP2PPPP/R1BQKBNR b

Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Na4

Grünfeld Defence - Nadanian Variation

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5. Na4!?

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This strange looking move was first employed by Ashot Nadanian in 1996. Usually it is not recommended to put Knights on the edge of the board, but here it is meaningful. White takes the important c5-square under control and going to force black's Knight from the center with е4. Eventually, the a4-Knight can occupy the c5-square and attack the pawn on b7.

Theory table

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For explanation of theory tables, see theory table and for notation, see algebraic notation..

1. d4 Nf6 2. c4 g6 3.Nc3 d5 4.cxd5 Nxd5

5 6 7 8 9 10
Na4
Bg7		 e4
Nb6		 Be3
O-O		 Nf3
Bg4		 =
...
e5		 dxe5
Bb4+		 Bd2
Ne3		 fxe3
Bxd2+		 Qxd2
Qh4+		 g3
Qxa4		 ∞
...
Nf6		 Nf3
Bg7		 g3
Nc6		 Bf4
Nd5		 ∞

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References

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Wikipedia has related information at Grünfeld Defence, Nadanian Variation

  • Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
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