DDG Accepted

The only serious way to challenge a gambit is to accept it. After 1.e4 e6 2.d4 d5 3.c4, brave fighters take the offered pawn without hesitation: 3...dxe4!. Naturally, 3...dxc4 would transpose to the Queen's Gambit Accepted; all other moves form the theory of the DDG Declined.


This is natural and by far the most played move. It may look like White is intending 5.Nxe4, but that is hardly ever the case.

4.Be3 (Alapin-Diemer-Duhm)

The Alapin-Diemer Gambit (ADG) games where the good old c4 is played later transpose to this variation. Especially the knight on d2 makes this variation unique; other lines are dealt with the 4.Nc3 Nf6 5.Be3 variation. I am a bit reluctant to the Nd2 lines, but DDGers cannot be purists: the whole DDG is just a bunch of transpositions. The following games and analysis are mainly from Tim Sawyer's Alapin French - Tactics for White.

1.e4 e6 2.d4 d5 3.Be3 dxe4 4.f3 exf3 5.Nxf3 Nf6 6.Bd3 Bd6 7.O-O O-O 8.c4 Nc6 9.Nbd2 Ng4 10.Bxh7+ Kh8 11.Ng5 Bxh2+ 12.Kh1 e5 13.Rxf7 exd4 14.Qf3 Re8 15.Rf1 Bd7 16.Rxg7 Kxg7 17.Qf7+ Kh8 18.Qh5 Kg7 19.Qg6+ 1-0, Diemer - von Freytag, 1954 (:-).

4.Nd2 Nf6

A) 5.c4


B) 5.f3

C) 5.Ne2 b6 6.Ng3 (6.a3 Bb7 7.c4 c5 8.dxc5 Bxc5 9.Bxc5 bxc5 10.Nc3 O-O -/+ [ECO]) 6...Bb7 7.c4 Be7 (7...Nbd7 8.Qc2 Bb4 -/+ [Pachman]) 8.Be2 O-O 9.f3 exf3 10.Bxf3 Bxf3 11.Qxf3 Na6 12.O-O c5, 0-1 in 28, Zaugg - Buffat, 1991.


4.f3?! most likely transposes to other variations. Besides, Black has clear advantage after 4...Bb4+ 5.Nc3 c5!. I have only "studied" the following original line:

4...f5 5.fxe4?!

4...Bd6!? 5.Be3 Nh6 6.Bxh6 Qh4+ 7.Ke2 exf3+ 8.Nxf3 Qxh6, 0-1 in 36, Brause - Fuzzy, FICS 1996. Here Fuzzy, another program, is more innovative; its rating is over 2400.


In general, other (good) moves transpose to more common variations.