Library/Openings/Sicilian Defense/Coles Sicilian Gambit ECO B21
Opening· 9 plies

Sicilian Defense: Coles Sicilian Gambit

An entry in the Encyclopedia of Chess Openings (ECO B21), reached after 9 half-moves: 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Bc4.

Sicilian Defense: Coles Sicilian Gambit ECO B21
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Black rook
Black bishop
Black queen
Black king
Black bishop
Black rook
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black knight
Black knight
White bishop
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White rook
White knight
White bishop
White queen
White king
White knight
White rook
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End of this line

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About this opening

Sicilian Defense: Coles Sicilian Gambit 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 9 half-moves from the starting position, with the move sequence 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Bc4.

It belongs to the Sicilian Defense family. Within that family this is a sub-variation (the Coles Sicilian Gambit line).

The opening sequence in prose form: 1.e4 c5, 2.d4 cxd4, 3.Qxd4 Nc6, 4.Qd1 Nf6, 5.Bc4. 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.