ECO C12 · French Defense
French Defense: McCutcheon Variation, Advance Variation
The position after 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5.
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5
French Defense: McCutcheon Variation, Advance Variation is filed under ECO C12, a variation of French Defense: McCutcheon Variation. It is the position after 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 — 9 half-moves in, with Black to move. Named theory ends here; beyond this the position is yours to work out.