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B97Opening

Sicilian Defense:Najdorf Variation, Poisoned Pawn Variation

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6

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White to move

Legal moves
44
Games in the next 4 moves
1,883,975
Different positions among them
613,154
Named lines from here
1

See it on the mapOn the opening map

Black’s queen grabs the b2 pawn and has to survive a storm of attacks. Fischer played it against Spassky in their 1972 world championship match.

It is reached after 14 moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6. It is a line of the Sicilian Defense.

White is to move and has 44 legal moves. Over the next four moves — two for each side — the game can branch into 1,883,975 different games. Those games reach 613,154 different positions: most positions can be reached in more than one way, 3.1 on average.

The Lichess opening list names 1 further line after this position, such as Poisoned Pawn Accepted (8. Qd2 Qxb2 9. Rb1 Qa3).

Map of every game of the next four moves after the Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation
Every game of the next four moves from this position, as the map draws it. Each ring is one more move; the outer ring holds all 1,883,975 games.

Move by move

  1. 1. e4King's Pawn Game
  2. 1... c5Sicilian Defense
  3. 2. Nf3Sicilian Defense
  4. 2... d6Sicilian Defense: Modern Variations
  5. 3. d4Sicilian Defense
  6. 3... cxd4Sicilian Defense
  7. 4. Nxd4—
  8. 4... Nf6Sicilian Defense: Modern Variations, Main Line
  9. 5. Nc3—
  10. 5... a6Sicilian Defense: Najdorf Variation
  11. 6. Bg5Sicilian Defense: Najdorf Variation
  12. 6... e6Sicilian Defense: Najdorf Variation
  13. 7. f4Sicilian Defense: Najdorf Variation
  14. 7... Qb6Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation

Named lines from here

Related openings

FEN

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