Trompowsky Attack

Queen's Pawn Game
	a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
	Position in Forsyth-Edwards Notation (FEN) rnbqkb1r/pppppp1p/8/6p1/3PnB2/8/PPP1PPPP/RN1QKBNR w
	Moves: 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g5

g5 is a dubious one move attack of the bishop that weakens the kingside and allows the Bf4 to sit on a strong outpost on e5.

References

	Be5 Rg8

Queen's Pawn Game
a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN) rnbqkb1r/pppppp1p/8/6p1/3PnB2/8/PPP1PPPP/RN1QKBNR w
Moves: 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g5