Library/Openings/Sicilian Defense/Wing Gambit/Marienbad Variation ECO B20
Opening· 9 plies

Sicilian Defense: Wing Gambit, Marienbad Variation

An entry in the Encyclopedia of Chess Openings (ECO B20), reached after 9 half-moves: 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2.

Sicilian Defense: Wing Gambit, Marienbad Variation ECO B20
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Black rook
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Black king
Black bishop
Black knight
Black rook
Black pawn
Black pawn
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Black pawn
Black pawn
Black queen
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White pawn
White bishop
White pawn
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White rook
White knight
White queen
White king
White bishop
White knight
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

Sicilian Defense: Wing Gambit, Marienbad Variation is an opening in the Encyclopedia of Chess Openings, classified under code B20. ECO group B (B00–B99) covers semi-open games (1.e4 with Black playing anything other than 1…e5), with the Sicilian, French, Caro-Kann and Pirc/Modern at its heart. This particular variation is reached after 9 half-moves from the starting position, with the move sequence 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2.

It belongs to the Sicilian Defense family. Within that family this is a level-2 branch (the Wing Gambit → Marienbad Variation line). The immediate parent line is Sicilian Defense: Wing Gambit, transitioned via 5.Bb2.

The opening sequence in prose form: 1.e4 c5, 2.b4 cxb4, 3.a3 d5, 4.exd5 Qxd5, 5.Bb2. 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.