Library/Openings/Nimzowitsch Defense/El Columpio Defense/El Columpio Gambit ECO B00
Opening· 11 plies

Nimzowitsch Defense: El Columpio Defense, El Columpio Gambit

An entry in the Encyclopedia of Chess Openings (ECO B00), reached after 11 half-moves: 1. e4 Nc6 2. Nf3 Nf6 3. e5 Ng4 4. d4 d6 5. h3 Nh6 6. e6.

Nimzowitsch Defense: El Columpio Defense, El Columpio Gambit ECO B00
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Black rook
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End of this line

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About this opening

Nimzowitsch Defense: El Columpio Defense, El Columpio Gambit is an opening in the Encyclopedia of Chess Openings, classified under code B00. 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 11 half-moves from the starting position, with the move sequence 1. e4 Nc6 2. Nf3 Nf6 3. e5 Ng4 4. d4 d6 5. h3 Nh6 6. e6.

It belongs to the Nimzowitsch Defense family. Within that family this is a level-2 branch (the El Columpio Defense → El Columpio Gambit line). The immediate parent line is Nimzowitsch Defense: El Columpio Defense, transitioned via 6.e6.

The opening sequence in prose form: 1.e4 Nc6, 2.Nf3 Nf6, 3.e5 Ng4, 4.d4 d6, 5.h3 Nh6, 6.e6. 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.