Library/Openings/Sicilian Defense/Smith-Morra Gambit Accepted/Siberian Variation ECO B21
Opening· 12 plies

Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation

An entry in the Encyclopedia of Chess Openings (ECO B21), reached after 12 half-moves: 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7.

Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation ECO B21
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Black rook
Black bishop
Black king
Black bishop
Black knight
Black rook
Black pawn
Black pawn
Black queen
Black pawn
Black pawn
Black pawn
Black pawn
Black knight
Black pawn
White bishop
White pawn
White knight
White knight
White pawn
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White pawn
White pawn
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White rook
White bishop
White queen
White king
White rook
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About this opening

Sicilian Defense: Smith-Morra Gambit Accepted, Siberian Variation is an opening in the Encyclopedia of Chess Openings, classified under code B21. 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 12 half-moves from the starting position, with the move sequence 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7.

It belongs to the Sicilian Defense family. Within that family this is a level-2 branch (the Smith-Morra Gambit Accepted → Siberian Variation line). The immediate parent line is Sicilian Defense: Smith-Morra Gambit Accepted, transitioned via 6…Qc7.

The opening sequence in prose form: 1.e4 c5, 2.d4 cxd4, 3.c3 dxc3, 4.Nxc3 Nc6, 5.Nf3 e6, 6.Bc4 Qc7. From this position exactly one named continuation is recorded in the encyclopaedia.