Philidor Defence
chess opening, consisting of the moves 1. e4 e5 2. Nf3 d6

The Philidor Defence (or Philidor's Defence) is a chess opening characterised by the moves:
1. e4 e5
2. Nf3 d6
The solid move 2...d6 defends Black's pawn on e5. White's usual response is to immediately challenge Black in the centre with 3.d4. Black's most common reply is 3...exd4; 3...Nf6 and 3...Nd7 are the main alternatives. It is also frequently reached via other move orders, such as 1.e4 d6 2.d4 Nf6 3.Nc3 e5, where 4.Nf3 transposes. This order encourages White to play Nc3 early, but allows White to exchange queens early via 4.dxe5. 3...Nd7 and only then 4...e5 is another possibility avoiding the endgame but allowing White to avoid transposing in other ways.
The Philidor is named after the famous 18th-century player François-André Danican Philidor, who advocated it as an alternative to the common 2...Nc6. His original idea was to challenge White's centre by the pawn thrust ...f7–f5.
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This entry incorporates text from “Philidor Defence” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.