Bird Opening:From's Gambit

Named after the Danish player Martin Severin From: Black gives a pawn with 1...e5 to open lines against White’s king.

It is reached after 2 moves: 1. f4 e5. It is a line of the Bird Opening.

White is to move and has 21 legal moves. Over the next four moves — two for each side — the game can branch into 443,288 different games. Those games reach 155,432 different positions: most positions can be reached in more than one way, 2.9 on average.

The Lichess opening list names 10 further lines after this position, such as Bahr Gambit (2. Nc3) and Lasker Gambit (2. fxe5 f6).