Black declines the gambit with ...e6, maintaining a solid center.
1.d4 - Controls the center and opens the queen's bishop.
1...d5 - Black stakes a claim in the center.
2.c4 - Queen's Gambit! White offers the c-pawn to undermine d5.
2...e6 - Declined. Black supports d5 and maintains the pawn.
3.Nc3 - White develops and increases pressure on d5.
3...Nf6 - Black develops, attacking e4 and preparing ...Be7.
White's plans: Play Bg5 or Nf3. Exchange on d5 or maintain tension.
Black's plans: Develop ...Be7, castle, and look for ...c5 or ...dxc4 at the right moment.
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