The Kieseritzky Gambit, Berlin Defense, Rubinstein Variation is a variation of the King's Gambit Accepted, catalogued as ECO C39. The line runs 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6 6. d4, reaching the position shown below after 11 half-moves.
White holds the centre with pawns on d4 and e4. Development is level at one minor pieces each, and Black is up a pawn of material. It is Black to move after six moves. Black has doubled pawns on the f-file.
On the King's Gambit Accepted generally: A romantic opening where White sacrifices a pawn for rapid development and attacking chances.
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The Kieseritzky Gambit, Berlin Defense, Rubinstein Variation goes 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6 6. d4. It is a variation of the King's Gambit Accepted and is catalogued as ECO C39.
The Kieseritzky Gambit, Berlin Defense, Rubinstein Variation is ECO C39. ECO codes group openings by their move order, so nearby codes cover closely related lines of the King's Gambit Accepted.
Stockfish evaluates the position after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6 6. d4 at -0.68 at depth 18, which is a small but real edge for Black. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
White holds the centre with pawns on d4 and e4. Development is level at one minor pieces each, and Black is up a pawn of material. It is Black to move. Black has doubled pawns on the f-file.