Trompowsky Attack: Poisoned Pawn Variation

1.d4 Nf6 2.Bg5 c5 3.d5 Qb6 4.Nc3

ECO A45

The Trompowsky Attack: Poisoned Pawn Variation is a chess opening line in the Trompowsky Attack complex, reached after 1.d4 Nf6 2.Bg5 c5 3.d5 Qb6 4.Nc3.

It is catalogued under code A45 in the Encyclopaedia of Chess Openings (ECO).

The defining move Nc3 is chosen by White on move 4.

Study this line with a grandmaster

This position is covered in the Trompowsky Attack course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.