Sicilian Defense:Kalashnikov Variation

It is reached after 10 moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6. It is a line of the Sicilian Defense.

White is to move and has 41 legal moves. Over the next four moves — two for each side — the game can branch into 1,818,543 different games. Those games reach 576,268 different positions: most positions can be reached in more than one way, 3.2 on average.

No later position on this line has a name of its own in the Lichess opening list: the names end here.

The same moves can be played in 108 different legal orders that all reach this position. For example 1. Nf3 c5 2. e4 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6, which starts as the Zukertort Opening.