Chess Opening Theory/1. d4/1...d5/2. e4/2...dxe4/3. Nc3/3...Bf5

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Blackmar-Diemer Gambit (BDG)
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)
Moves: 1. d4 d5 2. e4 dxe4 3. Nc3 Bf5

Blackmar-Diemer Gambit (BDG): Zeller Defense[edit | edit source]

3. Bf5[edit | edit source]

Bf5 defends the pawn on e4 and develops the queenside bishop, with intentions of keeping the pawn as it is a thorn to White who can't play Nf3 or Bd3, otherwise the knight/bishop will be taken by the pawn.

Responses[edit | edit source]

White usually responds with 3. f3?!, which attacks the e4 pawn albeit blocking the development of the knight to f3, which can be rectified after exd3. A rare option that is preferred by computers is g4, kicking the bishop away with the intention of creating a pawn storm with h4 and h5, forcing Black to play defensively.

Other than that, other options can block pieces from developing, get kicked away by pawns, or just do nothing.

Theory Table[edit | edit source]

For explanation of theory tables, see theory table and for notation, see algebraic notation.

  1. d4 d5 2. e4 dxe4 3. Nc3 Bf5
    4 5 6 7 8
    Queen Attack f3 exf3 Qxf3
    Bc8?!
    Be3
    Nf6
    O-O-O e6 d5
    Nxd5
    =
    Pawn Storm g4 Bg6 h4
    h6
    h5 Bh7 Bg2
    Nf6
    g5 hxg5

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References[edit | edit source]