Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d4/4...exd4
| Two Knights Defence - Classical Variation | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Position in Forsyth-Edwards Notation(FEN)
r1bqkb1r/pppp1ppp/2n2n2/8/2BpP3/5N2/PPP2PPP/RNBQK2R |
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Two Knights Defence - Classical Variation
4...exd4
Black plays exd4. Black is a pawn up but has a number of weaknesses the square e5, the Knight on f6 that can be pinned and also the weak f7 square. This all adds up to giving White an number of options. They are.
-
- 5. O-O the classical variation.
- 5. e5 the modern variation.
- 5. Ng5 a misguided direct attack on f7.
- 5. Nxd4 rather normal move.
- 5. Bg5 pining the Knight, but the pin can soon be undone, leaving no advantage for White.
- 5. Qe2 this supports e5, although e5 can be played immediately anyway.
- 5. c3 fails to 5...Nxe4 where Black has the nice d5 available and time to block any pins on the e-file against the King.
Theory table
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 exd4
5 |
6 |
7 |
8 |
9 |
10 |
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|---|---|---|---|---|---|---|---|---|
| 1 | 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 | Ng5 d5 |
exd5 Qe7+ |
Kf1 Ne5 |
Qxd4 Nxc4 |
Qxc4 h6 |
Nf3 Qc5 |
= | |
| 5 | Nxd4 Nxe4 |
Bxf7+ Kxf7 |
Qxh5+ g6 |
Qd5 Kg7 |
Nxc6 bxc6 |
Qxe4 Qe8 |
= | |
| 6 | Bg5 Be7 |
O-O O-O |
= | |||||
| 7 | Qe2 Bc5 |
e5 O-O |
O-O d5 |
=/+ | ||||
| 8 | c3 Nxe4 |
=/+ |
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References
- Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
- Batsford Chess Openings 2 (1989, 1994). Garry Kasparov, Raymond Keene. ISBN 0-8050-3409-9.
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