< Chess Opening Theory < 1. d4
| Queen's Knight Defence | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Position in Forsyth-Edwards Notation (FEN) r1bqkbnr/pppppppp/2n5/8/3P4/8/PPP1PPPP/RNBQKBNR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Moves: 1.d4 Nc6 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ECO code: A40 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Parent: Queens Pawn Opening | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Queen's Knight Defence
1...Nc6
This move is rarely played, it prepares a possible e5 for Black, however the Black Knight is often exposed to a being moved by White playing d5 at some stage or loses a tempo to pawns moving to occupy the centre. On the plus side Black's pawn structure remain flexible.
White has a number of choices.
- 2. e4 A common reply and transposes into a Nimzowitsch Defence.
- 2. Nf3 this prevents Black's immediate e5.
- 2. c4 exerting extra pressure on the d5 square.
- 2. d5 Moving the pawn again and directly challenging the Knight.
Theory table
For explanation of theory tables see theory table and for notation see algebraic notation
1.d4 Nc6
| 2 | 3 | 4 | ||
|---|---|---|---|---|
| Nimzowitsch Defence by transposition |
e4 | See 1.e4 Nc6 2.d4 | ||
| Chigorin Defence by transposition |
Nf3 d5 |
c4 Bg4 |
cxd5 Bxf3 |
+= |
| d5 Ne5 |
e4 e6 |
f4 Ng6 |
+= | |
| c4 e5 |
d5 Nce7 |
e4 Ng6 |
= |
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References
- Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
- Modern Chess Openings: MCO-14. 1999. Nick de Firmian, Walter Korn. ISBN 0-8129-3084-3.
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