Queen's Gambit Declined:Albin Countergambit

Named after Adolf Albin. Black answers the gambit with a gambit, 2...e5, for active play.

It is reached after 4 moves: 1. d4 d5 2. c4 e5. It is a line of the Queen's Gambit Declined.

White is to move and has 31 legal moves. Over the next four moves — two for each side — the game can branch into 1,372,584 different games. Those games reach 436,176 different positions: most positions can be reached in more than one way, 3.1 on average.

The Lichess opening list names 12 further lines after this position, such as Lasker Trap (3. dxe5 d4 4. e3 Bb4+ 5. Bd2 dxe3) and Normal Line (3. dxe5 d4 4. Nf3).

The same moves can be played in 4 different legal orders that all reach this position. For example 1. c4 d5 2. d4 e5, which starts as the English Opening.