NEW UPDATED OPENING LINE
[September 14, 2018] Updated Opening Line by Boris Avrukh:
Queen’s Gambit Declined, Harrwitz Attack – Main Line with 6… c5
[Line 256 : 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5]
White’s usual response in the initial position of this line is 7. dxc5 Bxc5, where 8. a3 is covered in our Line 257.
Black delays the capture dxc4 until White loses a tempo with Be2, like in the following lines: 8. Rc1 Nc6 9. Be2 dxc4 and 8. Be2 dxc4.
If White first develops his queenside with 8. Qc2 Nc6 9. Rd1 Black obtains good prospects with 9… Qa5 10. Be2 Nb4 11. Qb3 dxc4 12. Bxc4 Nbd5.
Move 8. cxd5 is quite a popular choice of the players of White. After 8… Nxd5 9. Nxd5 exd5 Black is able to equalize, e. g. 10. a3 Nc6 11. Bd3 Bb6, followed by either d5-d4 or Qf6. The alternative 8… exd5 leads to slightly better positions for White, since in this case Black’s d5-d4 is no longer as convenient, because White can meet it with strong Nc3-a4.
[Diagram: White to Move] White’s pawn majority on the kingside allows him to seize the initiative on that part of the board. What is the best plan for him in the diagrammed position?
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