Trompowsky Attack: Poisoned Pawn Variation is a chess opening with the ECO code A45, part of the Trompowsky Attack family. It goes 1. d4 Nf6 2. Bg5 c5 3. d5 Qb6 4. Nc3. White opens with 1. d4 (the queen's pawn) and Black answers 1... Nf6. After 7 moves it is Black to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
The moves
1. d4 – White plays the pawn to d4
1... Nf6 – Black plays the knight to f6
2. Bg5 – White plays the bishop to g5
2... c5 – Black plays the pawn to c5
3. d5 – White plays the pawn to d5
3... Qb6 – Black plays the queen to b6
4. Nc3 – White plays the knight to c3
About the Trompowsky Attack
After 1.d4 Nf6, White plays 2.Bg5 at once, threatening to take on f6 and damage Black's pawns. It avoids a lot of opening theory.
Bxf6 gives Black doubled pawns but gives up the bishop pair.
Black often replies 2...Ne4, attacking the bishop, or 2...e6.
...c5 and ...Qb6 hitting b2 is a common counterattack.
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