C42 · Petrov's Defense

Petrov's Defense: Cochrane Gambit, Bishop Check Line

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. Bc4+
♜♞♝♛♝♜♟♟♟♚♟♟♟♞♝♟♟♟♟♟♟♟♟♜♞♝♛♚♜
The position after 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. Bc4+, Black to move.

In the Petrov's Defense: Cochrane Gambit, Bishop Check Line, aim to understand the plans and pawn structures, not just memorize the first moves.

See how you play it

The Petrov's Defense: Cochrane Gambit, Bishop Check Line is a chess opening classified under ECO code C42. It is reached after the moves 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. Bc4+: 9 moves in, with Black to play.

It belongs to the Petrov's 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.

Club players rarely lose the Petrov's Defense: Cochrane Gambit, Bishop Check Line in the opening itself. They lose it a few moves later, when the plan behind the moves runs out: that is what reading your own games in this line shows you.

Play the Petrov's Defense: Cochrane Gambit, Bishop Check Line? See where you go wrong.
Deepline reviews your real games, finds the exact moves that cost you, and trains the fixes.
Analyze my games free →

Related openings

Petrov DefensePetrov Defense: ClassicalPetrov's DefensePetrov's Defense: Classical AttackPetrov's Defense: Classical Attack, Berger VariationPetrov's Defense: Classical Attack, Chigorin VariationPetrov's Defense: Classical Attack, Chigorin Variation, Browne AttackPetrov's Defense: Classical Attack, Chigorin Variation, Main LinePetrov's Defense: Classical Attack, Closed VariationPetrov's Defense: Classical Attack, Jaenisch Variation

See how you play this opening