Please tell me why this opening shouldn't scare you?

[Hagen]

After seeing this game when I used the Tree Mask feature in SCID (Shane's Chess Information Database) program I've become convinced there's a conspiracy among top level GMs to specifically avoid this opening during top level tournament play. See for yourself and try to imagine having an ELO rating like this and lose this game as Black the way he did. I don't care about the time controls nor the circumstances. After viewing this game I've become fed up with having to face this opening as Black whenever I find someone who is using this on a regular basis.

I'm also very annoyed there are no real chess books discussing this opening in any length. I have Mikhail Marin's Beating the Open Games and he does NOT discuss this line. He does discuss the Max Lange Attack...but interestingly enough one reason why I suspect he talks about the Max Lange attack is because this can easily transpose to the Evans Gambit for White depending on whether Black replies to the Fried Liver Attack with either Nf6 or chooses the outrageously wild Wilkes Barr line with Bc5. I have checked the MCO and it also is extremely thin on the Fried Liver Attack/Traxler Gambit and I'm curious to know why.

This is an opening system that practically guarantees your defeat if you face it as Black. After studying this opening system I've become more convinced it's safer to avoid answering 1.e4 with e5 as suggested by Mikhail Marin in his book.





[Event "ch-Poltava"]
[Site "Lubny UKR"]
[Date "2011.02.25"]
[Round "9"]
[White "Malimonenko, Yury"]
[Black "Shabala, S."]
[Result "1-0"]
[WhiteElo "2293"]
[BlackElo "2346"]
[ECO "C57"]
[EventDate "2011.02.19"]
[PlyCount "33"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "UKR"]
[EventCategory "2"]
[Source "Mark Crowther"]
[SourceDate "2011.03.14"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5 6.Bf1 Qxd5 7.Nc3 Qc5 8.Bxb5
Rb8 9.Qe2 h6 10.d4 Qb6 11.dxe5 hxg5 12.exf6+ Be6 13.Qe4 Kd7 14.Be3 Qxb5
15.Nxb5 Rxb5 16.fxg7 Bxg7 17.Rd1+ 1-0

[Jeremy Bernstein]

After seeing this game when I used the Tree Mask feature in SCID (Shane's Chess Information Database) program I've become convinced there's a conspiracy among top level GMs to specifically avoid this opening during top level tournament play. See for yourself and try to imagine having an ELO rating like this and lose this game as Black the way he did. I don't care about the time controls nor the circumstances. After viewing this game I've become fed up with having to face this opening as Black whenever I find someone who is using this on a regular basis.

I'm also very annoyed there are no real chess books discussing this opening in any length. I have Mikhail Marin's Beating the Open Games and he does NOT discuss this line. He does discuss the Max Lange Attack...but interestingly enough one reason why I suspect he talks about the Max Lange attack is because this can easily transpose to the Evans Gambit for White depending on whether Black replies to the Fried Liver Attack with either Nf6 or chooses the outrageously wild Wilkes Barr line with Bc5. I have checked the MCO and it also is extremely thin on the Fried Liver Attack/Traxler Gambit and I'm curious to know why.

This is an opening system that practically guarantees your defeat if you face it as Black. After studying this opening system I've become more convinced it's safer to avoid answering 1.e4 with e5 as suggested by Mikhail Marin in his book.





[Event "ch-Poltava"]
[Site "Lubny UKR"]
[Date "2011.02.25"]
[Round "9"]
[White "Malimonenko, Yury"]
[Black "Shabala, S."]
[Result "1-0"]
[WhiteElo "2293"]
[BlackElo "2346"]
[ECO "C57"]
[EventDate "2011.02.19"]
[PlyCount "33"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "UKR"]
[EventCategory "2"]
[Source "Mark Crowther"]
[SourceDate "2011.03.14"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5 6.Bf1 Qxd5 7.Nc3 Qc5 8.Bxb5
Rb8 9.Qe2 h6 10.d4 Qb6 11.dxe5 hxg5 12.exf6+ Be6 13.Qe4 Kd7 14.Be3 Qxb5
15.Nxb5 Rxb5 16.fxg7 Bxg7 17.Rd1+ 1-0

FCO from Paul van der Sterren gives 6...Nd4
(HIARCS 13.2: 6...Nd4 7.c3 Nxd5 8.cxd4 Qxg5 9.Bxb5+ Kd8 10.0-0
= (0.17) Tiefe: 11/31 00:00:00 222kN
+/= (0.50) Tiefe: 18/41 00:01:37 35188kN)

and 6...h6 as Black's best chances here. If 6.Bxf5 THEN ...Qxd5 is apparently good initiative for Black (HIARCS calls it even).

[kingliveson]

r1bqkb1r/p1p2ppp/2n2n2/1p1Pp1N1/8/8/PPPP1PPP/RNBQKB1R b KQkq - 1 6

Critter 1.0 x64 (Linux):

Code: Select all

 2 +0.12 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Na3 Rb8 10.O-O Qxf3 11.Nxf3 Rxb5  (0.00)
 3 +0.30 6.... Nxd5 7.Bxb5 Nb4 8.Bxc6+ Nxc6 9.Qf3 Qf6 10.Nc3  (0.00)
 4 +0.30 6.... Nxd5 7.Bxb5 Nb4 8.Bxc6+ Nxc6 9.Qf3 Qf6 10.Nc3  (0.00)
 5 +0.78 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Qxf6 gxf6  (0.00)
 5 +0.73 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.00)
 6 +0.73 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.01)
 7 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.03)
 8 +0.72 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rd8  (0.03)
 9 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.06)
10 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.08)
11 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.10)
12 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.13)
13 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.14)
13 +0.67 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.O-O Rb8 10.Qxf6 gxf6  (0.33)
13 +0.58 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.O-O Rb8 10.Qxf6 gxf6  (0.44)
13 +0.68 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Ba4 Bd7 10.Qxf6 gxf6 11.Ne4 Be7 12.a3 Nd5 13.Nbc3 Nxc3 14.dxc3 f5 15.Ng5 Rg8  (0.53)
14 +0.59 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Ba4 Bd7 10.Qxf6 gxf6 11.Ne4 Be7 12.a3 Nd5 13.Nbc3 Nxc3 14.dxc3 f5 15.Ng3 Rg8 16.O-O f4 17.Ne4 O-O-O 18.Rd1 Kb7  (0.64)
14 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qd3 Nxb4 14.axb4 Bxb5 15.Nxb5 Qxb5 16.Qxb5 Rxb5 17.Rxa7 Bxb4 18.Rxc7 e4 19.h4 Bd6 20.Ra7 h6  (0.71)
15 +0.71 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rd8 11.Nge4 Nxe4 12.Qxe4 Nd4 13.b4 Qxb4 14.Bxd7+ Rxd7 15.Qxe5 O-O 16.Rb1 Qc4  (0.76)
16 +0.71 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Bd3 Nd4 14.Qg3 h6 15.Nge4 Nxe4 16.Bxe4 Qe6 17.Bb2 f5  (0.81)
16 +0.63 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Ba4 Bd7 10.Qxf6 gxf6 11.Ne4 Be7 12.a3 Nd5 13.Nbc3 Nxc3 14.dxc3 Rg8 15.O-O f5 16.Ng3 f4 17.Ne4 O-O-O 18.Rd1 Kb7  (1.98)
16 +0.59 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Na3 a6 10.Ba4 Bd7 11.d3 Qxf3 12.Nxf3 Nd4 13.Bxd7+ Kxd7 14.Nxd4 exd4 15.Bd2 Re8+ 16.Kd1 Nd5 17.Nc4 Nb6 18.Na5 Bd6 19.g3 Re7 20.Nb3 c5 21.Re1 Rhe8 22.Rxe7+ Bxe7  (3.08)
17 +0.67 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Na3 a6 10.Ba4 Bd7 11.d3 Qxf3 12.Nxf3 Nd4 13.Bxd7+ Kxd7 14.Nxd4 exd4 15.Bd2 Re8+ 16.Kd1 Nd5 17.Nc4 Nb6 18.Na5 Bd6 19.g3 Re7 20.Nb3 c5 21.Re1 Rhe8 22.Rxe7+ Bxe7  (11.06)
17 +0.50 6.... Nd4  (15.19)
17 +0.76 6.... Nxd5 7.Bxb5 Nb4 8.Qf3 Qf6 9.Na3 a6 10.Ba4 Bd7 11.d3 Qxf3 12.Nxf3 Nd4 13.Bxd7+ Kxd7 14.Nxd4 exd4 15.Bd2 Re8+ 16.Kd1 Nd5 17.Nc4 Nb6 18.Na5 Bd6 19.g3 Re7 20.Nb3 c5 21.Re1 Rhe8 22.Rxe7+ Bxe7  (17.45)
17 +0.72 6.... Nxd5 7.Bxb5 Bb7 8.Qf3 Qd7 9.Nc3 Ndb4 10.Ba4 h6 11.Nge4 O-O-O 12.a3 Nd5 13.Nxd5 Qxd5 14.Qh3+ Kb8 15.Nc3 Qd6 16.O-O Nd4 17.Re1 Qg6 18.Qg3 Qxg3 19.hxg3 Bd6 20.b4  (20.82)
18 +0.63 6.... Nd4  (23.23)
18 +0.55 6.... Nd4  (23.84)
18 +0.75 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.O-O Rb8 11.b4 Qb6 12.a3 O-O 13.Qe3 h6 14.Nge4 Rfd8 15.Qxb6 axb6 16.Nxf6+ Bxf6 17.Nd5 Nd4 18.Nxf6+ gxf6  (32.54)
19 +0.76 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.Bd3 O-O 11.O-O Rab8 12.Nge4 Nxe4 13.Qxe4 g6 14.Qd5 Be6 15.Qxc5 Bxc5 16.a3 Kg7 17.b4 Bd4 18.Re1 Ne7 19.Bb2  (37.19)
20 +0.68 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.Bd3 O-O 11.O-O Rab8 12.Nge4 Nxe4 13.Qxe4 g6 14.Qd5 Be6 15.Qxc5 Bxc5 16.a3 Rfd8 17.b4 Bd4 18.Re1 a5 19.b5 Ne7 20.Bb2  (57.39)
20 +0.73 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.Bd3 O-O 11.O-O Rab8 12.a3 Nd4 13.Qg3 Qb6 14.b4 h6 15.Nge4 Qe6 16.Nxf6+ Bxf6 17.Bb2 e4 18.Rae1 Be5 19.Rxe4 Bxg3 20.Rxe6 fxe6 21.hxg3  (67.82)
20 +0.71 6.... Nxd5 7.Bxb5 Bb7 8.Qf3 Qd7 9.Nc3 Ndb4 10.Ba4 h6 11.Nge4 O-O-O 12.a3 Nd5 13.Nxd5 Qxd5 14.Qh3+ Kb8 15.Nc3 Qd6 16.O-O Nd4 17.b4 f5 18.Re1 Be7 19.Qg3 Bf6 20.Bb2  (127.52)
21 +0.73 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.Bd3 O-O 11.O-O Rab8 12.a3 Nd4 13.Qg3 h6 14.Nge4 Nxe4 15.Nxe4 Qa5 16.b4 Qd5 17.Nc3 Qd6 18.Re1 Bf6 19.Bb2 Bf5 20.Be4  (150.54)
22 +0.65 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.Bd3 O-O 11.O-O Rab8 12.a3 Nd4 13.Qg3 h6 14.Nge4 Nxe4 15.Nxe4 Qa5 16.b4 Qd5 17.Nc3 Qd6 18.Re1 Bf6 19.Bb2  (232.09)
22 +0.62 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.b4 Qb6 11.Nge4 Nxe4 12.Qxe4 Rd8 13.Rb1 f5 14.Qc4 Nd4 15.Bxd7+ Rxd7 16.O-O Qc6 17.Qxc6 Nxc6 18.a3 Nd4 19.Rb2 Kf7 20.Re1 e4 21.d3  (270.92)
23 +0.64 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.b4 Qb6 11.Nge4 Nxe4 12.Qxe4 Rd8 13.Rb1 f5 14.Qc4 Nd4 15.Bxd7+ Rxd7 16.O-O Qc6 17.Qxc6 Nxc6 18.a3 Nd4 19.Re1 e4 20.Rb2 O-O 21.d3 exd3 22.cxd3 Re8 23.Bf4  (355.72)
24 +0.56 6.... Qxd5 7.Nc3 Qc5 8.Bxb5 Be7 9.Qf3 Bd7 10.b4 Qb6 11.Nge4 Nxe4 12.Qxe4 Rd8 13.Rb1 f5 14.Qc4 Nd4 15.Bxd7+ Rxd7 16.O-O Qc6 17.Qxc6 Nxc6 18.a3 e4 19.Ne2 O-O 20.Re1 Bf6 21.b5 Nd4 22.Nxd4 Bxd4 23.a4 Bc5 24.a5  (691.60)

[Jeremy Bernstein]

HIARCS again.

1... Nxd5 2. Bxb5 Ndb4 3.Nf3 Rb8 4.Ba4 e4 5.Ne5 Bb7 6.Qe2 Qd4 7.Nxc6 Bxc6 
  +/=  (0.68)   Tiefe: 13/29   00:00:00  216kN
  +/=  (0.68)   Tiefe: 17/38   00:00:06  2464kN

Deep Fritz book gives Nxd5 a ?. HIARCS book gives a !? (gives Bxb5 and Qf3 as good responses, but doesn't go any deeper than that.

EDIT: The strongenest, biggenest, baddenest, rootentootenest analysis engine of all time (M ANSARI) likes Hagen's line (6...Qxd5) with 0.45.

[Hagen]

I'd like to see someone run a computer match with Rybka 4 64bit as Black against either Stockfish/Critter/or whatever using this line in the Two Knight's Defense. It would be delicious to see the percentages in such a match.

[AnthonyTheSage]

5......b5 is a losing move for black. Nd5 leads to a better game.

[hyatt]

There are a lot of openings people play and get burned in doing so. I used to play this a lot as black, and when your opponent is not prepared, there are lots of pitfalls along the pathway. Another one is 1. e4 e5 2. Nf3 f5 (The Latvian). Against a booked-up opponent, black gets killed. But if the opponent has not seen it, and black knows what he is doing, he gets a whole lot of initiative in return for losing a pawn and exposing his king...

I'd never consider playing either against a computer, however.

[Uly]

I've analyzed this at corr time controls, I think 5...Na5 is best (if black is happy with a draw).

[kingliveson]

I've analyzed this at corr time controls, I think 5...Na5 is best (if black is happy with a draw).

r1bqkb1r/ppp2ppp/2n2n2/3Pp1N1/2B5/8/PPPP1PPP/RNBQK2R b KQkq - 0 5

Critter 1.0 agrees -- after 30 minutes:

Code: Select all

1  6 +0.17 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Be6 9.Bxe6 fxe6 10.Nc3 
 7 +0.42 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Nd8 9.Nc3 Qf4 10.d3 Qxf3 11.Bxf3  (0.04)
 7 +0.33 5.... Nb4 6.O-O Nbxd5 7.Re1 Bd6 8.Nc3 c6 9.Nxd5 cxd5  (0.06)
 8 +0.25 5.... Nb4 6.O-O Nbxd5 7.Re1 Bd6 8.Nc3 c6 9.Nxd5 cxd5  (0.06)
 8 +0.40 5.... Nb4 6.O-O Nfxd5 7.Nc3 h6 8.Nf3 Qd6 9.Re1  (0.06)
 8 +0.40 5.... Nd4 6.Nc3 Bg4 7.f3 Bf5 8.d3 h6 9.Nge4  (0.07)
 9 +0.31 5.... Nb4 6.O-O Nfxd5 7.Nc3 h6 8.Nf3 Qd6 9.Re1  (0.10)
 9 +0.23 5.... Nb4 6.O-O Nfxd5 7.Nc3 h6 8.Nf3 Qd6 9.Re1  (0.11)
 9 +0.10 5.... Nb4 6.O-O Nfxd5 7.Nc3 h6 8.Nf3 Qd6 9.Re1  (0.12)
 9 -0.02 5.... Nb4 6.O-O Bg4 7.f3 Bc5+ 8.Kh1 Bf5 9.Re1 O-O 10.d3 Bd4  (0.13)
10 +0.05 5.... Nb4 6.O-O Bg4 7.f3 Bc5+ 8.Kh1 Bf5 9.Re1 O-O 10.d3 Bd4  (0.16)
10 +0.07 5.... Nb4 6.O-O Bg4 7.f3 Bc5+ 8.Kh1 Bf5 9.Qe2 O-O 10.Nc3 Nxc2 11.Qxe5 Qd7  (0.17)
11 +0.15 5.... Nb4 6.O-O Bg4 7.f3 Bc5+ 8.Kh1 Bf5 9.Qe2 O-O 10.Nc3 Nxc2 11.Qxe5 Qd7  (0.38)
11 +0.24 5.... Nb4 6.O-O Bg4 7.f3 Bc5+ 8.Kh1 Bf5 9.Qe2 O-O 10.Nc3 Nxc2 11.Qxe5 Qd7  (0.46)
11 +0.19 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Nd8 9.Nc3 c6 10.d3 Qf5 11.Be4 Qxf3 12.Bxf3 Be7 13.Ne4 Ne6  (0.65)
12 +0.27 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Nd8 9.Nc3 c6 10.d3 Qf5 11.Be4 Qxf3 12.Bxf3 Be7 13.Ne4 Ne6  (0.72)
12 +0.27 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Nd8 9.O-O c6 10.Bc4 Qf5 11.Qg3 Be6 12.Re1 f6 13.Bd3 Qf4 14.Qxf4 exf4  (0.76)
13 +0.35 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Nd8 9.O-O c6 10.Bc4 Qf5 11.Qg3 Be6 12.Re1 f6 13.Bd3 Qf4 14.Qxf4 exf4  (1.59)
13 +0.18 5.... Nxd5 6.Qh5 g6 7.Qf3 Qxg5 8.Bxd5 Nd8 9.O-O c6 10.Bc4 Qf5 11.Qg3 Be6 12.Re1 f6 13.Bd3 Qg4 14.Qxg4 Bxg4 15.Nc3 Ne6 16.Ne4  (1.90)
13 +0.17 5.... Nxd5 6.Qh5 g6 7.Qf3 Be6 8.Nxe6 fxe6 9.O-O Qd7 10.Qe4 O-O-O 11.d3 Kb8 12.Nd2 Ndb4 13.Bb3 Nd4 14.Nf3 Nbxc2 15.Nxe5 Qb5  (2.06)
14 +0.16 5.... Nxd5 6.Qh5 g6 7.Qf3 Be6 8.Nxe6 fxe6 9.O-O Qd7 10.Qe4 O-O-O 11.d3 Kb8 12.Nd2 Ndb4 13.Bb3 Nd4 14.Nf3 Nbxc2 15.Nxe5 Qb5 16.Bc4  (3.59)
15 +0.07 5.... Nxd5 6.Qh5 g6 7.Qf3 Be6 8.Nxe6 fxe6 9.O-O Qd7 10.Qe4 O-O-O 11.d3 Kb8 12.Nd2 Ndb4 13.Bb3 Nd4 14.Nf3 Nbxc2 15.Nxe5 Qb5 16.Bc4  (5.80)
15 +0.02 5.... Nxd5 6.O-O Qxg5 7.Bxd5 Bd6 8.d3 Qg6 9.Bxc6+ bxc6 10.Qf3 Bd7 11.Nd2 O-O 12.Nc4 Rab8 13.Re1 f6 14.Be3 a6 15.a3 Rfd8 16.h3 Be6  (7.36)
16 +0.10 5.... Nxd5 6.O-O Qxg5 7.Bxd5 Bd6 8.d3 Qg6 9.Bxc6+ bxc6 10.Qf3 Bd7 11.Nd2 O-O 12.Nc4 Rab8 13.Re1 f6 14.Be3 a6 15.a3 Rfd8 16.h3 Be6  (11.22)
16 +0.19 5.... Nxd5 6.O-O Qxg5 7.Bxd5 Bd6 8.d3 Qg6 9.Bxc6+ bxc6 10.Qf3 Bd7 11.Nd2 O-O 12.Nc4 Rab8 13.Re1 f6 14.Be3 a6 15.a3 Rfd8 16.h3 Be6  (13.29)
16 +0.32 5.... Nxd5 6.O-O Qxg5 7.Bxd5 Bd6 8.d3 Qg6 9.Bxc6+ bxc6 10.Qf3 Bd7 11.Nd2 O-O 12.Nc4 Rab8 13.Re1 f6 14.Be3 a6 15.a3 Rfd8 16.h3 Be6  (15.85)
16 +0.28 5.... Nxd5 6.Nxf7 Kxf7 7.Qf3+ Ke6 8.Nc3 Nb4 9.Qe4 c6 10.a3 Na6 11.d4 Nc7 12.dxe5 Kf7 13.O-O Kg8 14.Rd1 Be6 15.Ne2 Bc5 16.Bd3 Qf8 17.Nd4 Rd8 18.Bg5 Ne7  (16.70)
17 +0.34 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Be7 9.Bd3 O-O 10.O-O h6 11.Ne4 Nd5 12.Ng3 Nf4 13.Nf5 Bc5 14.Nc3 Nxd3 15.cxd3 Rb8 16.Re1 Re8 17.Qg4 Qg5 18.Qxg5 hxg5  (19.65)
18 +0.42 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Be7 9.Bd3 O-O 10.O-O h6 11.Ne4 Nd5 12.Ng3 Nf4 13.Nf5 Bc5 14.Nc3 Nxd3 15.cxd3 Rb8 16.Re1 Re8 17.Qg4 Qg5 18.Qxg5 hxg5  (33.56)
18 +0.44 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6 9.Ne4 Nd5 10.Nec3 Be6 11.Ba4 Bc5 12.O-O O-O 13.d3 f5 14.Qe2 Qc7 15.Nxd5 cxd5 16.Nc3 d4 17.Nb5  (35.56)
19 +0.45 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6 9.Ne4 Nd5 10.Nec3 Be6 11.Ba4 Bc5 12.O-O O-O 13.d3 Bd4 14.Ne2 Bb6 15.Nbc3 Rb8 16.Bd2 Nxc3 17.Bxc3 Qh4 18.Qe4  (60.73)
20 +0.50 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6 9.Ne4 Nd5 10.Nec3 Be6 11.Ba4 Be7 12.d3 O-O 13.O-O Rb8 14.Re1 Qd6 15.Qe2 f6 16.Ne4 Qb4 17.Nbc3 Nxc3 18.Nxc3 Rfd8 19.Qe4  (95.76)
21 +0.42 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6 9.Ne4 Nd5 10.Nec3 Be6 11.Ba4 Be7 12.d3 O-O 13.O-O f5 14.Re1 Bf6 15.Nd2 Qd6 16.Qg3 Nxc3 17.bxc3 Rad8 18.Nb3 f4 19.Qg6 Bf7  (194.32)
21 +0.42 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Rb8 9.Bd3 h6 10.Ne4 Nd5 11.O-O Nf4 12.Nbc3 Be7 13.Re1 Nxd3 14.cxd3 O-O 15.Ng3 Qc7 16.Nf5 Rd8 17.Nxe7+ Qxe7 18.Qe3 f6 19.f4 Bf5 20.fxe5 Rxd3  (199.55)
22 +0.38 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Be7 9.Bxc6+ Nxc6 10.Qxc6+ Bd7 11.Qf3 O-O 12.Nc3 Ng4 13.Nge4 f5 14.Ng3 e4 15.Qe2 Bd6 16.h3 Nf6 17.O-O Rc8 18.d3 Qb6 19.Qe3 Bc5 20.Qg5 h6  (300.51)
23 +0.38 5.... Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Be7 9.Bxc6+ Nxc6 10.Qxc6+ Bd7 11.Qf3 O-O 12.Nc3 Rc8 13.O-O Bc6 14.Qe2 Nd5 15.Nf3 f6 16.Qc4 Rf7 17.Qd3 Nxc3 18.dxc3 Qc7 19.Qf5 Rd8 20.Be3 Qb7 21.b4  (408.02)
24 +0.39 5.... Na5 6.Bb5+ Bd7 7.Qe2 Be7 8.Nc3 Bxb5 9.Qxb5+ c6 10.dxc6 Nxc6 11.O-O O-O 12.Re1 Rc8 13.Rb1 Bd6 14.b4 Nd4 15.Qd3 Qc7 16.Bb2 Rfd8 17.b5 h6 18.Nge4 Nxe4 19.Qxe4 Qc4 20.Rbc1  (749.91)
25 +0.31 5.... Na5 6.Bb5+ Bd7 7.Qe2 Be7 8.Nc3 Bxb5 9.Qxb5+ c6 10.dxc6 Nxc6 11.O-O O-O 12.Re1 Rc8 13.Rb1 Bd6 14.b4 Nd4 15.Qd3 Qc7 16.a3 Rfd8 17.h3 Qc4 18.Qxc4 Rxc4 19.Rb2 h6  (1546.26)
25 +0.28 5.... Na5 6.Bb5+ Bd7 7.Qe2 Be7 8.Nc3 Bxb5 9.Qxb5+ c6 10.dxc6 Nxc6 11.O-O O-O 12.Re1 Rc8 13.Nf3 a6 14.Qe2 Re8 15.d3 Qb6 16.Nd2 Nd4 17.Qd1 Qc7 18.Nf3 h6 19.a4 Bb4 20.Bd2 Bd6 21.a5 Qd7 22.h3  (1824.90)

[Master Om]

well 5...Nxd5!! is totaly sound and nothing wrong in playing It.