♟ Chess Helper

Openings

Queen's Gambit Declined: Harrwitz Attack, 9. a3 Qa5 10. O-O-O

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O

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