Philidor defence

Philidor's defence:
1.e4 e5 2.Nf3 d6
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Philidor's defence, usually called the Philidor, is one of the basic chess openings. It was used often by the 18th century master François-André Danican Philidor, and he published analysis about it in his textbook L'Analyse du jeu des échecs (1849).

Variations

Philidor's counter-gambit

1.e4 e5
2.Nf3 d6
3.d4 f5

Main line

1.e4 e5
2.Nf3 d6
3.d4 exd4
4.Nxd4 Nf6
5.Nc3 Be7 or 5...g6 followed by 6...Bg7

Transposition

Black can reach a line called the Hanham variation by transposing from the Pirc defence:

1.e4 d6
2.d4 Nf6
3.Nc3 Nbd7
4.Nf3 e5