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

Two Knights Defence
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b
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5
4
3
2
1
8
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3
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1
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h

Position in Forsyth-Edwards Notation (FEN)
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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.

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
=

References

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v · t · e
Chess Opening Theory
1. e4 e5
Open games
3. Bb5
Spanish
3. Bc4
Italian
3. Nc3
Three knights
Other
2...Nf6
Russian
2...d6
Philidor
Other
2. f4
King's gambit
2. Nc3
Vienna
Other
1. e4 c5
Sicilian
1. e4 e6
French
1. e4 c6
Caro-Kann
1. e4 other
1. d4 d5
Closed games
1. d4 Nf6
Indian
1. d4 f5
Dutch
1. d4 ...other:
Flank
Unorthodox