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Chess Opening Theory/1. d4/1...d5/2. e4/2...dxe4/3. Bc4/3...Nc6/4. Qh5

Blackmar-Diemer Gambit (BDG)

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4. Qh5

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White threatens to win a queen by checking on f7. Black should play g6 to stop the threat. However, if he, in his hotheaded desire plays Nf6??, Black faces doom with Qxf7+ Kd7 Be6+ Kd6 Bf4+ Ne5 Bxe5+ Kc6 Nc3 Bxe6 Qxe6+ Qd6 Bxd6.

Blackmar-Diemer Gambit (BDG)
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1
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. d4 d5 2. e4 dxe4 3. Bc4 Nc6 4. Qh5