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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...Bc5/4. O-O
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| Classical defence | |
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a
b
c
d
e
f
g
h
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
a
b
c
d
e
f
g
h
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Position in Forsyth-Edwards Notation (FEN)
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| Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O | |
| ECO code: C64 | |
| Parent: Classical defence | |
4. O-O
[edit | edit source]White castles.
4...Nd4 is a common continuation, threatening the Spanish bishop. This is similar to the Bird defence (3...Nd4) but now Black has the option of recapturing with the bishop instead of the pawn: 5. Nxd4 Bxd4. This allows White to get in 6. c3 with tempo, however.
4...Nf6 transposes into the Beverwijk variation of the Berlin defence.
Theory table
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References
[edit | edit source]See also
[edit | edit source]- Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
1. e4
2. Nf3
2. Other
1... other
1. d4
2. other
2. c4
With 2...e6:
With 2...g6:
With other 2nd moves for Black:
With 2...g6:
With other 2nd moves for Black:
2. Nf3
2. other
1... other
Flank
Unorthodox
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