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

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< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nf3‎ | 2...Nc6‎ | 3. Bc4‎ | 3...Nf6
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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 b

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

Two Knights Defence - Classical Variation[edit | edit source]

4. d4[edit | edit source]

This aggressive move frees White's queenside bishop and adds pressure on the center. However, the e4-pawn is left undefended and that gives Black some options to establish a stable 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? blockades Black's d-pawn and allows White to take on e5.

Theory table[edit | edit source]

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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References[edit | edit source]

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