London System: Poisoned Pawn Variation

London System: Poisoned Pawn Variation is a chess opening with the ECO code D02, part of the London System family. It goes 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Qb6 5. Nc3. White opens with 1. d4 (the queen's pawn) and Black answers 1... Nf6. After 9 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. Nf3 – White plays the knight to f3
• 2... d5 – Black plays the pawn to d5
• 3. Bf4 – White plays the bishop to f4
• 3... c5 – Black plays the pawn to c5
• 4. e3 – White plays the pawn to e3
• 4... Qb6 – Black plays the queen to b6
• 5. Nc3 – White plays the knight to c3

Related openings

• It extends: Indian Defense: Knights Variation (1. d4 Nf6 2. Nf3)
• Related line: London System (1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6)
• Related line: London System (1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3)
• Related line: London System (1. d4 Nf6 2. Nf3 g6 3. Bf4)

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