Petroff's Defense: Cochrane's Gambit

1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 Nxf7 Kxf7
5 d4 c5 6 dxc5 d5 7 Nc3 Bxc5 8 Nxd5 Bg4
9 Be2 Bxf2+ 10 Kxf2 Nxe4+ Line

1 e4 e5 2 Nf3 Nf6:

3 Nxe5

3 d4
3 Nc3
3 d3
3 Bc4
3 Qe2
3 a3
3 Bb5
3 Be2

3 ... d6

3 ... Nxe4
3 ... Qe7
3 ... d5
3 ... Be7
3 ... Nc6
3 ... Bb4

4 Nxf7

Introducing Cochrane's Gambit.

4 Nf3
4 Nc4
4 Nd3

4 ... Kxf7

5 d4

5 Nc3
5 Bc4+
5 Qf3
5 d3
5 c4
5 Bd3

If 5 ... Nxe4 then 6 Qh5+ when White
regains his knight by capturing the
one on e4 while staying a pawn ahead:
6 Qh5+ g6 7 Qd5+, say.

1 e4 e5 2 Nf3 Nf6 3 Nxe5 d6 4 Nxf7 Kxf7:

5 Nc3 c5 6 Bc4+ Be6 7 Bxe6+ Kxe6
8 d4 Kf7 9 dxc5 Nc6 10 Qe2 Qd7
11 Bg5.
5 Nc3 c5 6 Bc4+ Be6 7 Bxe6+ Kxe6 8 d4 Kf7
9 dxc5 Nc6 10 Qe2 Qd7 11 Be3 dxc5 12 f4 Re8
13 e5 Ng4 14 Rd1 Qf5 15 O-O h5 16 Bc1 Nd4
17 Qc4+ Kg6 18 h3 Nh6 19 Nb5 a6 20 Nxd4 cxd4
21 Qxd4 Rc8 22 Qb6+ Kh7 23 Qxb7 Rxc2
24 Be3 Qg6 25 Rc1 Rxc1 26 Rxc1 Nf5 27 Bf2 h4
28 Rc7 Ng3 29 Kh2 Nf1+ 30 Kg1 Qb1 31 Bxh4 Bc5+
Topalov-Kramnik, 1/2-1/2,
XVI Ciudad de Linares 1999.

5 Nc3 Qe8 6 Bc4+ Be6 7 Nd5 Qc6
8 d3 Bxd5 9 exd5 Qe8+ 10 Be3 b5
11 Bb3.

5 Bc4+ d5 6 exd5 b5 7 Bb3 Qe8+
8 Kf1 Bd6.

5 Bc4+ d5 6 exd5 Bd6 7 O-O Rf8
8 d4 Kg8.

5 Bc4+ d5 6 Bb3 Be6 7 Nc3 dxe4
8 Bxe6+ Kxe6 9 Nxe4 Nxe4
10 Qg4+ Kf7 11 Qxe4 Qe8.

5 Bc4+ d5 6 Bb3 Be6 7 e5 Ne4
8 d4 c5 9 Qf3+ Ke8.

5 Bc4+ d5 6 Bxd5+ Nxd5 7 Qh5+ g6
8 Qxd5+ Qxd5 9 exd5.

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

5 d4

5 ... c5

5 ... Be7
5 ... g6
5 ... Nxe4
5 ... Qe8
5 ... Qe7
5 ... c6
5 ... d5
5 ... Be6

5 ... Be7 6 Nc3 Re8 7 Bc4+ Kf8
8 O-O.

5 ... Be7 6 Nc3 Re8 7 Bc4+ d5
8 Nxd5 Be6 9 Nxf6 Bxf6
10 Bxe6+ Rxe6 11 e5.

5 ... Be7 6 Nc3 Re8 7 Bc4+ Be6
8 Bxe6+ Kxe6 9 O-O Kf7
10 e5 dxe5 11 dxe5.

5 ... Be7 6 Nc3 c6 7 Bc4+ d5
8 exd5 cxd5 9 Nxd5 Be6
10 Ne3 Bxc4 11 Nxc4 Nc6.

5 ... g6 6 Nc3 Bg7 7 Bc4+ Be6
8 Bxe6+ Kxe6 9 f4 Kf7
10 e5 Ne8 11 Qf3 c6 12 Ne4 Qa5+
13 Bd2 Qd5 14 Ng5+ Kg8.

5 ... g6 6 Nc3 Bg7 7 Bc4+ Be6
8 Bxe6+ Kxe6 9 f4 Kf7 10 e5 Re8
11 O-O Nh5 12 f5 Kg8 13 f6 Nxf6
14 exf6 Bxf6 15 Nd5.

5 ... Nxe4 6 Qh5+ g6 7 Qd5+ Kg7
8 Qxe4 Nc6 9 c3 Bf5 10 Qf4 Qd7
11 Be3 d5 12 Nd2 h6 13 h3.

5 ... Qe8 6 Bc4+ Be6 7 d5 Bh3
8 Qf3 Bg4.

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

5 ... c5

6 dxc5

6 Bc4+
6 Nc3
6 Qf3
6 c3
6 d5
6 Nd2

6 ... d5

6 ... Qa5+
6 ... Qe8
6 ... Nc6
6 ... Bg4
6 ... Qe7
6 ... Na6
6 ... Qc7

7 Nc3

7 e5
7 Bc4
7 exd5
7 Bg5
7 Be3
7 Bd3

7 ... Bxc5

7 ... Qe7
7 ... Qe8
7 ... Bg4
7 ... Nbd7
7 ... Na6
7 ... Be7

8 Nxd5

8 exd5
8 Bd3
8 Bb5
8 Be2
8 a3

8 ... Bg4

8 ... Be6
8 ... Re8
8 ... Nc6
8 ... Nxd5
8 ... Nbd7

9 Be2

9 Qd2
9 Qd3
9 f3

9 ... Bxf2+

9 ... Bxe2
9 ... Be6
9 ... Nxd5
9 ... h5
9 ... Bc8

10 Kxf2

10 Kf1

10 ... Nxe4+

10 ... Bxe2

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