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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4/3...Nc6

Philidor Defence
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. e4 e5 2. Nf3 d6 3. d4 Nc6

3...Nc6

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This move is uncommon, as the pin 4. Bb5 is annoying, yet, White is only a little better.

Another popular choice for White is 4. dxe5, which is best met with 4...Nxe5 or 4...dxe5. Either way, Black will lose castling rights after Qxd8+.

Stockfish prefers 4. d5, which attacks the knight and forces it to move backwards.

Various transpositions are possible:

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Chess openings quick reference
1. e4
2. Nf3
With 2...Nc6:
With other 2nd moves:
2. Other
1... other
1. d4
Flank
Unorthodox