# Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nf6/3. Nxe5/3...d6/4. Nxf7/4...Kxf7/5. d4

< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nf3‎ | 2...Nf6‎ | 3. Nxe5‎ | 3...d6‎ | 4. Nxf7‎ | 4...Kxf7
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Petrovs Defence : Cochrane Gambit
 a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

rnbq1b1r/ppp2kpp/3p1n2/8/3PP3/8/PPP2PPP/RNBQKB1R

# Petrovs Defence : Cochrane Gambit

Black's priority is to organize his defence and to counter White's attack. Therefore, 5...Nxe4 is bad (moreover, White can win the knight with 6. Qh5+ g6 7. Qd5+).

There are three strategies to build comfortably the defence :

5...c5 tries to regain space by attacking the center from the queen side.
5...Be7 is a first step toward an "artificial castling". This prepares Re8 and Kg8.
5...g6 prepares a fianchetto. Black will leave the e file open and builds another kind of defence with the bishop on g7. But we may wonder if this will resist a White pawn advance on the king side.

## Theory table

For explanation of theory tables see theory table and for notation see algebraic notation.

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. d4

5
...
c5
=
...
Be7
=
...
g6
=
...
Nxe4
+/-

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