Petrov's Defense: Cochrane Gambit

An entry in the Encyclopedia of Chess Openings (ECO C42), reached after 7 half-moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7.

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4…Kxf7 2 lines
- C42 Bishop Check Line
- C42 Center Variation

About this opening

Petrov's Defense: Cochrane Gambit is an opening in the Encyclopedia of Chess Openings, classified under code C42. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 7 half-moves from the starting position, with the move sequence 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7.

It belongs to the Petrov's Defense family. Within that family this is a sub-variation (the Cochrane Gambit line).

The opening sequence in prose form: 1.e4 e5, 2.Nf3 Nf6, 3.Nxe5 d6, 4.Nxf7. From this position exactly one named continuation is recorded in the encyclopaedia.