411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e6/2. d4/2...d5/3. e5/3...c5/4. c3/4...Nc6/5. Nf3/5...Qb6
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
French Defence: Advance Variation C02 Advance Variation
5...Qb6
Here Black has built up quite some pressure on White's d4-pawn, luckily there are still enough defenders.
White has several options. They can:
Prepare a gambit by playing /6. Bd3/.
Develop their pieces, but without the intention of sacrificing a pawn (/6. Be2/).
Prepare an expansion on the queenside (/6. a3/).
Theory table
6. Bd3 cxd4 6. Be2 cxd4 6. a3 c4
References
French Defence