King's Gambit Declined:Classical Variation

It is reached after 4 moves: 1. e4 e5 2. f4 Bc5. It is a line of the King's Gambit Declined.

White is to move and has 29 legal moves. Over the next four moves — two for each side — the game can branch into 956,482 different games. Those games reach 320,705 different positions: most positions can be reached in more than one way, 3 on average.

The Lichess opening list names 9 further lines after this position, such as Walthoffen Attack (3. Qh5) and Senechaud Countergambit (3. Nf3 g5).

The same moves can be played in 2 different legal orders that all reach this position. For example 1. f4 e5 2. e4 Bc5, which starts as the Bird Opening.