Openings

French Defense: Winawer, Advance Variation, 4...c5 5.a3 Bxc3+ 6.bxc3 Qa5

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qa5
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