Sicilian Defense: Wing Gambit, Deferred Variation

An entry in the Encyclopedia of Chess Openings (ECO B50), reached after 5 half-moves: 1. e4 c5 2. Nf3 d6 3. b4.

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About this opening

Sicilian Defense: Wing Gambit, Deferred Variation is an opening in the Encyclopedia of Chess Openings, classified under code B50. 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 5 half-moves from the starting position, with the move sequence 1. e4 c5 2. Nf3 d6 3. b4.

It belongs to the Sicilian Defense family. Within that family this is a level-2 branch (the Wing Gambit → Deferred Variation line). The immediate parent line is Sicilian Defense: Wing Gambit, transitioned via 3.b4.

The opening sequence in prose form: 1.e4 c5, 2.Nf3 d6, 3.b4. 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.