Last modified on 3 September 2009, at 00:04

Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d4

Two Knights Defence - Classical Variation
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

r1bqkb1r/pppp1ppp/2n2n2/4p3/2BPP3/5N2/PPP2PPP/RNBQK2R

Two Knights Defence - Classical VariationEdit

4. d4Edit

This aggressive move, frees White Queenside Bishop it also add pressure on the center, however the e4 pawn is left undefended and that gives Black some options to establish a Black center.
  • 4...exd4 is Black's only credible answer.
  • 4...Nxe4 can be meet with 5. dxe5 when White threatens Bxf7+ or Qd5+ attacking both the e4 Knight and f7.
  • 4...Nxd4 with Nxe5 undermining the Knight on d4.
  • 4...Bd6 this odd move prevents Blacks d-pawn advance and allow White to threat the piece fork e5.

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Theory tableEdit

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

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4.d4

4

5

6

7

8

9

10
1 d4
exd4
O-O
Nxe4
Re1
d5
Bxd5
Qxd5
Nc3
Qh5
Nxe4
Be6
Bg5
Bd6
=
2 ...
...
...
Bc5
e5
d5
exf6
dxc4
Re1+
Be6
Ng5
Qd5
Nc3
Qf5
=
3 ...
...
e5
d5
Bb5
Ne4
Nxd4
Bd7
Bxc6
bxc6
O-O
Bc5
Be3
Qe7
=
4 ...
Nxd4
Nxe5
Ne6
O-O

+/=
5 ...
Nxe4
dxe5
d6
Bxf7
Kxf7
Qd5+
Be6
Qxe4

+/=
6 ...
Bd6
O-O
exd4
e5

+/=

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ReferencesEdit

  • Batsford Chess Openings 2 (1989, 1994). Garry Kasparov, Raymond Keene. ISBN 0-8050-3409-9.