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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d3

Two Knights Defence
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
Position in Forsyth-Edwards Notation (FEN)

r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/3P1N2/PPP2PPP/RNBQK2R b

Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3

Two Knights Defence 4. d3

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If 4...Bc5, then this opening transposes to the Giuoco Pianissimo.

Theory table

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

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3

4 5 6
...
Bc5 		c3
d6		 O-O
O-O		 =
...
Be7 		O-O
O-O		 Re1
d6		 =

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References

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v · t · e
Chess Opening Theory
1. e4 e5
Open game
2. Nf3
With 2...Nc6:
  • Four knights (
    )
  • Italian game (
    )
  • Spanish game (
    )

With other 2nd moves:

2. Other

1. e4 c5
Sicilian defence
2. Nf3 · Open Sicilian
With 2...Nc6:

With 2...d6:

With 2...e6:

With other 2nd moves:
Anti-Sicilians
1. e4 ...other:
Caro-Kann
French
Other


1. d4 d5
Closed game
2. c4
2. Nc3
2. other
1. d4 Nf6
Indian defence
2. c4
With 2...e6:

With 2...g6:

With other 2nd moves for Black:
2. Nf3
2. other:
1. d4 f5
Dutch defence
1. d4 ...other:
Flank
Unorthodox
出典: Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d3

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