Openings

Nimzo-Indian Defense: Classical, Zürich Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 6.Bd2 O-O 7.a3 Bxc3 8.Bxc3 Qe7
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