Lengfellner system

The Lengfellner System arises after 1.e4 e6 2.d4 d6. ECO code: C00.

Instead of the standard 2...d5, Black plays 2...d6, heading toward Pirc Defence or Old Indian Defence-type positions. The move avoids the main French theory but leads to a somewhat passive position for Black. After 3.Nf3 Nf6 4.Nc3, the position resembles a Philidor-French hybrid.