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B92Opening

Sicilian Defense:Najdorf Variation, Opocensky Variation

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2

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Black to move

Legal moves
30
Games in the next 4 moves
1,569,320
Different positions among them
519,337
Named lines from here
6

See it on the mapOn the opening map

It is reached after 11 moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2. It is a line of the Sicilian Defense.

Black is to move and has 30 legal moves. Over the next four moves — two for each side — the game can branch into 1,569,320 different games. Those games reach 519,337 different positions: most positions can be reached in more than one way, 3 on average.

The Lichess opening list names 6 further lines after this position, such as Scheveningen Variation, Classical Variation (6... e6) and Modern Line (6... e5 7. Nb3 Be7 8. O-O Be6).

The same moves can be played in 4,284 different legal orders that all reach this position. For example 1. e4 c5 2. d4 d6 3. Nf3 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2, which starts as the Sicilian Defense: Smith-Morra Gambit.

Map of every game of the next four moves after the Sicilian Defense: Najdorf Variation, Opocensky 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 1,569,320 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. Be2Sicilian Defense: Najdorf Variation, Opocensky Variation

Named lines from here

Related openings

FEN

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