411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...d5/2. e4/2...dxe4/3. Nc3
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Blackmar-Diemer Gambit (BDG) rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pl pd nl pl pl pl pl pl pl rl bl ql kl bl nl rl
Blackmar-Diemer Gambit (BDG)
3. Nc3
White has brought his minor piece into action and taken control of the middle. Simultaneously, he has put pressure on Black's e4-pawn, which Black must now try and defend. Nf6 or Bf5 would most commonly be used to defend the lone pawn, while e5 gives the option of a pawn transfer. f5 defends the pawn using Black's f-pawn, a less optimal response. Rarer responses include Nc6 transposing to the Nimzowitsch Defense and adding an attacker to the d4 pawn, and c5, a rather unexplored countergambit.
Theory table
.
1. d4 d5 2. e4 dxe4 3. Nc3
3
4
5
6
7
Main line
...Nf6
f3exf3
Nxf3g6
Bc4Bg7
O-OO-O
⩱
Lemberger Countergambit
...e5
dxe5Qxd1+
Kxd1Nc6
Nxe4Nxe5
=
Zeller Defense
...Bf5
f3–
=
Netherlands Variationf5Bg5
Nf6=Reversed Albin Countergambitc5d5
Nf6=
Blackmar-Diemer Gambit
References