1. d4 Nf6 2. Bg5
The Trompowsky Attack (1. d4 Nf6 2. Bg5) sidesteps mainstream theory by immediately challenging Black's knight. White is ready to trade the dark-squared bishop for the f6-knight, often doubling Black's pawns and steering the game into original, less-charted positions.
Position after 1. d4 Nf6 2. Bg5
Named after Brazilian champion Octávio Trompowsky, the opening gained a cult following through the games of Julian Hodgson and Antoaneta Stefanova, who showed its venom at grandmaster level.