A...Nxe4
5...Nf6xe4?
6.Qd1-h5+

6...g7-g6
7.Qh5-d5+ Kf7-g7
8.Qd5xe4 Nb8-c6
9.c2-c3 Bc8-f5
10.Qe4-f4 Qd8-d7
11.Bc1-e3 d6-d5
12.Nb1-d2 h7-h6
13.h2-h3 Ra8-e8
14.g2-g4 Bf8-d6
15.Qf4-f3 Bf5-c2
16.Ra1-c1 Rh8-f8
17.Qf3-g2 Bc2-e4!=
Reinderman - Van der Sterren Amsterdam 1999;

B.5...g6
5...g7-g6?
6.Nb1-c3 Kf7-g7 (6...Bf8-g7 7.Bf1-c4+ Bc8-e6 8.Bc4xe6+ Kf7xe6 9.0-0 Ke6-f7 10.f2-f4 Rh8-e8 11.e4-e5! Nf6-d7 12.f4-f5 g6xf5 13.Qd1-h5+ Kf7-g8 14.Bc1-g5 Qd8-c8 15.Bg5-h6! Bg7xh6 16.Qh5xh6 Re8-e7 17.Rf1xf5 Nb8-c6 18.Nc3-d5 Re7-g7 19.e5-e6 Nd7-f8 20.Rf5-f7!+- Roman - Moulain Paris 1989)

7.Bf1-e2 (7.Bf1-c4?! Nf6xe4 8.Nc3xe4 d6-d5!)
7...Qd8-e8! (7...d6-d5?! 8.e4-e5! Nf6-e4 9.Nc3xe4 d5xe4 10.0-0 Nb8-c6 11.Bc1-e3 h7-h5 12.f2-f3! e4xf3 13.Rf1xf3 Bc8-e6? 14.c2-c4 Be6-g4 15.Rf3-f4 Bg4xe2 16.Qd1xe2 Kg7-h7 17.d4-d5! Qd8-e8 18.d5xc6 Qe8xe5 19.Qe2-f2 Ra8-d8 20.c6xb7 c7-c5 21.Rf4-f7+ Bf8-g7 22.Be3xc5 Qe5-g5 23.Bc5-d4 Rh8-g8 24.Bd4xg7 Rg8xg7 25.Rf7xg7+ Kh7xg7 26.b7-b8Q 1-0 Vitolinsh - Meijers Latvian Championship 1989)

C.5...Be7
5...Bf8-e7
6.Nb1-c3 c7-c6!
7.Bf1-d3 Rh8-e8 (7...Qd8-a5 8.0-0 Rh8-e8 9.f2-f4 Qa5-h5 10.Qd1-d2 Kf7-g8 11.f4-f5 Nb8-d7 12.Nc3-e2 d6-d5 13.Ne2-f4 Qh5-h6 14.Qd2-e2 Be7-d6 15.g2-g3 d5xe4?? (15...Nf6xe4 16.Nf4xd5 Qh6-h3 17.Bd3xe4 c6xd5 18.Be4xd5+)16.Bd3-c4+ Kg8-h8 17.Nf4-g6++- Salinnikov - Gutov St Petersburg 1998)

8.0-0 Kf7-g8
9.e4-e5! d6xe5
10.d4xe5 Nf6-g4
11.Bc1-f4 Be7-g5
12.Bf4xg5 Qd8xg5
13.h2-h3 Ng4-h6
14.f2-f4 Qg5-e7
15.Nc3-e4 Nb8-a6
16.Bd3xa6 b7xa6
17.Ne4-d6 Re8-f8
18.Qd1-f3
Isaev - Dive Moscow 1994

D.5...Qe8
5...Qd8-e8
6.Nb1-c3 d6-d5
7.e4-e5 Bf8-b4
8.Bf1-d3 Nf6-e4 (8...c7-c5 9.0-0 c5xd4?? 10.e5xf6 d4xc3 11.Qd1-h5+ g7-g6 12.Qh5xd5+ Qe8-e6 13.Qd5-b5 Qe6-d6 14.Bd3-c4++- Sulskis - Frolyanov Moscow 2004)

9.0-0 Ne4xc3
10.b2xc3 Bb4xc3
11.Qd1-f3+! Kf7-g8
12.Qf3xd5+ Bc8-e6
13.Qd5xb7 Bc3xa1
14.Qb7xa8 Ba1xd4
Sulskis - Liiva Tallinn 2007

E.5...c5
5...c5!
6.d4xc5 [6.Bf1-c4+? d6-d5! 7.e4xd5 b7-b5! 8.Bc4xb5 Qd8xd5 9.Nb1-d2 Bc8-a6)

6...Nb8-c6
7.Bf1-c4+ Bc8-e6
8.Bc4xe6+ Kf7xe6
9.0-0 Ke6-f7
10.Qd1-e2 Qd8-e8
11.Rf1-e1 d6-d5
12.e4-e5 Nf6-e4
13.Nb1-c3 Ne4xc3
14.b2xc3 Qe8-e6
15.Ra1-b1 Ra8-b8
16.Bc1-e3 Bf8-e7
17.f2-f4 Rh8-f8
18.Be3-d4 Kf7-g8
19.Re1-f1 g7-g5
20.f4xg5 Be7xg5
21.Rf1xf8+ Kg8xf8
22.Qe2-h5 Qe6-g6=
Short - Shirov Dubai 2002

本文最初的标题是A Sac way to smash Petroff--The Cochrane Gambit
谁知度娘这两条抽了什么疯，不拿中文写连帖子都发不出去。
诸位将就着看吧。

Petroff就是俄罗斯防御LZ非找个拗口的说

图太小了。我倾向于走Be7

走正常的4.Nf3 Nxe4白方获得优势是没有问题的，何必冒这么大的风险呢？！

。。

技术贴，顶

我居然不记得有这贴子

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. d4 Ke8 6. Nc3 Bg4 7. f3 Be6 8.
d5 Bf7 9. Qe2 Nbd7 10. Be3 a6 11. O-O-O Be7 12. Qd2 Ne5 13. Be2 Qc8 14. f4 Ned7
15. Qd4 Nb6 16. Rde1 Rf8 17. h3 Kd8 18. Bf3 Nbd7 19. g3 Bg6 ..感觉没什么优势