The Advance Variation, Milner-Barry Gambit, Main Line is a variation of the French Defense, catalogued as ECO C02. The line runs 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. O-O, reaching the position shown below after 15 half-moves.
Both sides have pawns in the centre (White on d4 and e5, Black on d5). Development is level at two minor pieces each. It is Black to move after eight moves. White has castled while Black’s king is still uncommitted; the c-file file is fully open.
On the French Defense generally: A solid defense where Black builds a strong pawn chain. Leads to strategic middlegames with clear plans.
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The Advance Variation, Milner-Barry Gambit, Main Line goes 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. O-O. It is a variation of the French Defense and is catalogued as ECO C02.
The Advance Variation, Milner-Barry Gambit, Main Line is ECO C02. ECO codes group openings by their move order, so nearby codes cover closely related lines of the French Defense.
Stockfish evaluates the position after 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. O-O at -0.28 at depth 18, which is a slight pull for Black, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
Both sides have pawns in the centre (White on d4 and e5, Black on d5). Development is level at two minor pieces each. It is Black to move. White has castled while Black’s king is still uncommitted; the c-file file is fully open.