Annotated Chess Game 8377295 by Ragwort

Alapin Diemer Gambit. White wins by conducting a positional attack on the queen side rather than by rushing to regain the gambit pawn.

1. d4 d5 2. e4 e6
Black declines the Blackmar Diemer Gambit pawn and transposes to the French Defence.
3. Bc1e3
White develops the bishop to protect the d-pawn while continuing to offer the e pawn gambit.
3... dxe4
Black performs a psychological U turn and takes the offered pawn.
4. f3
White attacks the e-pawn. If black takes the f pawn white brings another piece into action with the recapture.
4... exf3 5. Ng1xf3 Ng8f6 6. Bf1d3 Bf8e7 7. O-O Nb8d7 8. Nb1d2 O-O 9. Qd1e2
White has a lead in development in compensation for the gambit pawn.
9... c5
Black attacks the centre and allows further options to his queen.
10. Ra1d1
White develops his last piece and places it on the file with Black's queen. This may give a tactical opportunity if a later Bxh7+ should discover an attack on the Queen.
10... cxd4 11. Be3xd4 Be7c5 12. Nd2b3 Bc5xd4 13. Nb3xd4 Qd8b6 14. c3
Black has achieved the exchange of one set of pieces which increases the value of his extra pawn.
14... Rf8e8
Threatening e5 which would win the pinned knight.
15. Nf3e5
Blockading the e pawn's advance.