Library/Openings/King's Gambit Accepted/Rosentreter Gambit/Sörensen Gambit ECO C37
Opening· 9 plies

King's Gambit Accepted: Rosentreter Gambit, Sörensen Gambit

An entry in the Encyclopedia of Chess Openings (ECO C37), reached after 9 half-moves: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Nc3.

King's Gambit Accepted: Rosentreter Gambit, Sörensen Gambit ECO C37
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Black rook
Black knight
Black bishop
Black queen
Black king
Black bishop
Black knight
Black rook
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
White pawn
White pawn
Black pawn
Black pawn
White knight
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White rook
White bishop
White queen
White king
White bishop
White rook
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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

King's Gambit Accepted: Rosentreter Gambit, Sörensen Gambit is an opening in the Encyclopedia of Chess Openings, classified under code C37. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 9 half-moves from the starting position, with the move sequence 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Nc3.

It belongs to the King's Gambit Accepted family. Within that family this is a level-2 branch (the Rosentreter Gambit → Sörensen Gambit line). The immediate parent line is King's Gambit Accepted: Rosentreter Gambit, transitioned via 5.Nc3.

The opening sequence in prose form: 1.e4 e5, 2.f4 exf4, 3.Nf3 g5, 4.d4 g4, 5.Nc3. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.