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Philidor Defense

Lion Variation, Shirov Gambit

C41gambitaggressivetactical

  1. 1.e4e5
  2. 2.Nf3d6
  3. 3.d4Nd7
  4. 4.Nc3Ngf6
  5. 5.g4
392 games57%39%

A sharp pawn sacrifice against the Lion Variation of the Philidor Defense, in which White plays 5. g4 to harass the f6-knight and open the g-file.

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About the Shirov Gambit

The Shirov Gambit meets the Lion Variation with 5. g4, a pawn offer aimed at the f6-knight. Half of Black's replies accept it with 5...Nxg4, which gives White the half-open g-file. The main ways to decline are 5...h6, which prevents g5, and 5...g6. Engines rate the position as roughly balanced. White scores well in practice, except against 5...g6, where Black's results are better.

Popular continuations