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1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4 e5 5.Nf3 exd4 6.Qxd4 c6 7.Bc4 d5 · ECO B07
Lion Defense: Anti-Philidor, Lion's Cave, Lion Claw Gambit is a chess opening that arises after 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4 e5 5.Nf3 exd4 6.Qxd4 c6 7.Bc4 d5. It is classified B07 in the ECO system, and the position after these moves has white to move.
This line is a variation within the Lion Defense family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4 e5 5.Nf3 exd4 6.Qxd4 c6 7.Bc4 d5.