All Chess Positions Open the map

B56Opening

Sicilian Defense:Classical Variation

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6

a8b7c6d5e4f3g2h1

White to move

Legal moves
43
Games in the next 4 moves
2,052,753
Different positions among them
661,632
Named lines from here
36

See it on the mapOn the opening map

It is reached after 10 moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6. It is a line of the Sicilian Defense.

White is to move and has 43 legal moves. Over the next four moves — two for each side — the game can branch into 2,052,753 different games. Those games reach 661,632 different positions: most positions can be reached in more than one way, 3.1 on average.

The Lichess opening list names 36 further lines after this position, such as Richter-Rauzer Variation (6. Bg5) and Sozin Attack (6. Bc4).

The same moves can be played in 732 different legal orders that all reach this position. For example 1. Nf3 c5 2. e4 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6, which starts as the Zukertort Opening.

Map of every game of the next four moves after the Sicilian Defense: Classical 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 2,052,753 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... Nc6Sicilian Defense: Classical Variation

Named lines from here

Related openings

FEN

r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 3 6