B21

Sicilian Defense: Smith-Morra Gambit Declined, Wing Formation

1. e4 c5 2. d4 cxd4 3. c3 Qa5

The Sicilian Defense: Smith-Morra Gambit Declined, Wing Formation is a chess opening classified under ECO code B21. It is reached after the moves 1. e4 c5 2. d4 cxd4 3. c3 Qa5.

It belongs to the Sicilian Defense family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.

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