Cooking The Opening Book with Stockfish

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Don
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Joined: Tue Apr 29, 2008 4:27 pm

Re: Cooking The Opening Book with Stockfish

Post by Don »

Don wrote:
Don wrote:
tano-urayoan wrote:
Don wrote: Ok, I think that is the best move anyway.

My response is Be7.

Position after 14. Re1 Qd6 15. Bb5 Be7
Again 16. Nxe6 looks strong. I think We enter a forced sequence in which white ends with Queen and 4 pawns against Rook + 2 knights and 2 or 3 pawns, I am using Critter 0.9 which evaluates the final position .82 but optically looks white has a serious advantage.
Ok, we will try Nxe6, give you are response in about 8-10 hours.
I might as well give you the obvious response now:

15. Bxb5 Be7 16. Nxe6 fxe6
Here are some if/then moves. If you play the underlined moves I will respond with the given move, otherwise give me your alternative.

14. Re1 Qd6
15. Bxb5 Be7
16. Nxe6 fxe6
17. Bxe7 Qxe7
18. Rxe6 Qxe6
19. Re1 Qxe1+
20. Qxe1+ Kd8

Don
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Don
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Re: Cooking The Opening Book with Stockfish

Post by Don »

peter wrote:
Don wrote: 15. Bxb5 Be7 16. Nxe6 fxe6
...
Komodo definitely thinks 16. Nxe6 is not the best move and sees the score as being pretty close to even. It thinks 16. Ne4 is a better trying giving white a clear advantage. Maybe I will learn something about Komodo's evaluation here.
Hi Don!

For sure it's a very tricky position and I really think that 14.Nxe6 is a very fine novelty, probably the one and only very best move, even if it is not so easy to proof because the well known alternatives 14.Bxb5 (with 17.Nxe6 arising in some examples) and 14.Re1 have had some high rated games with white wins too.
14.Nxe6 might not get so many examples of high class games simply because the whole variant might not be played by masters with Black at all any more just because of this novelty.
I for myself would not dare to reach the 14. move in this variant any longer as Black, (as a matter of fact I did not even till now :)) knowing 14.Nxe6 now
:)
It's obvious that 14. Nxe6 is the best, I don't see any proof however that Nxe6 is just another way to win an already won game, which is a hypothesis we are exploring. Do you think you can win with any other move? I don't.

Probably not possible to prove, but I think it's enough to show that it's not clear. In the "test game" we are playing (based on 14. Bxb5) it appears by Komodo's evaluation to be close to equal. There are alternatively moves that can be tried in the test sequence and I'm not white has chose the best, but we can explore them too.

Evidently, from other comments about Critters analysis, the line we are looking at is either ok or bad depending on which program you use. Since the position is very unbalance in this line that is to be expected, it will depend a lot on how each program evaluations a queen vs 2 rooks and varying numbers of pawns for a piece, etc ....

In all the lines I see black is able to unleash his rooks and get good play.
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Don
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Re: Cooking The Opening Book with Stockfish

Post by Don »

Don wrote:
peter wrote:
Don wrote: 15. Bxb5 Be7 16. Nxe6 fxe6
...
Komodo definitely thinks 16. Nxe6 is not the best move and sees the score as being pretty close to even. It thinks 16. Ne4 is a better trying giving white a clear advantage. Maybe I will learn something about Komodo's evaluation here.
Hi Don!

For sure it's a very tricky position and I really think that 14.Nxe6 is a very fine novelty, probably the one and only very best move, even if it is not so easy to proof because the well known alternatives 14.Bxb5 (with 17.Nxe6 arising in some examples) and 14.Re1 have had some high rated games with white wins too.
14.Nxe6 might not get so many examples of high class games simply because the whole variant might not be played by masters with Black at all any more just because of this novelty.
I for myself would not dare to reach the 14. move in this variant any longer as Black, (as a matter of fact I did not even till now :)) knowing 14.Nxe6 now
:)
It's obvious that 14. Nxe6 is the best, I don't see any proof however that Nxe6 is just another way to win an already won game, which is a hypothesis we are exploring. Do you think you can win with any other move? I don't.

Probably not possible to prove, but I think it's enough to show that it's not clear. In the "test game" we are playing (based on 14. Bxb5) it appears by Komodo's evaluation to be close to equal. There are alternatively moves that can be tried in the test sequence and I'm not white has chose the best, but we can explore them too.

Evidently, from other comments about Critters analysis, the line we are looking at is either ok or bad depending on which program you use. Since the position is very unbalance in this line that is to be expected, it will depend a lot on how each program evaluations a queen vs 2 rooks and varying numbers of pawns for a piece, etc ....

In all the lines I see black is able to unleash his rooks and get good play.
I let Komodo play out this position at a very high level, game in 3 hours plus 1 minute increment and the game ended in a draw. I'm starting another game after forcing in 14. Re1 Qd6 to see how this plays out. I think Komodo will play this out differently as it did not like the Nxe6 move when played later but thought another move was clearly better. That does mean Komodo was right, but I want to give Komodo a chance to justify it's choice and win with white.

A lot of the moves are more or less forced, but there are some decisions points here.

Bottom line of course is that 14. Nex6 appears to be a genuine TN and other choices may not win (and my assertion still to be disproved is that if you don't play Nex6 black can draw.)
kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Cooking The Opening Book with Stockfish

Post by kgburcham »

[White "Audino Marco (ITA)"]
[Black "Staroske Uwe (GER)"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2238"]
[BlackElo "2421"]
[PlyCount "37"]
[EventDate "1973.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5
dxe5 9. fxe5 Qc7 10. Qe2 Nfd7 11. O-O-O Bb7 12. Qh5 g6 13. Qh4 Qxe5 14. Bxb5
axb5 15. Rhe1 Qc5 16. Rxe6+ fxe6 17. Nxe6 Qf5 18. Nxb5 Ra5 19. Nec7+ 1-0

Audino Marco (ITA) - Staroske Uwe (GER), 1973
[D] rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 1

Houdini 2.0c Pro x64:
Multi pv
1. +- (2.50): 14.Nxe6 fxe6
2. +/= (0.29): 14.Re1 Qd6 15.Bxb5 Be7 16.Nxe6 fxe6 17.Bxe7 Qxe7
3. +/= (0.29): 14.Bxb5 axb5 15.Ncxb5 Ra5 16.Bf4 Rxb5 17.Bxe5 Rxe5
4. = (0.00): 14.Nf3 Bxf3 15.gxf3 Bg7 16.Kb1 Nc6 17.Bf4 Qf6 18.Bg5 Qe5
__________________________________________________________
Houdini 2.0c Pro x64:

14.Re1
= (0.24 ++) Depth: 18/54 00:00:03 56933kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.Kb1 0-0 21.c3 Qc5 22.Rhf1 Rc8 23.Rd1 Rcd8 24.Rd2 e5 25.Nb3 Qb6 26.Rfd1 Rxd2 27.Nxd2
+/= (0.28) Depth: 18/54 00:00:03 64020kN
14.Re1 Qd6 15.Bxb5 Be7 16.Nxe6 fxe6 17.Bxe7 Qxe7 18.Rxe6 Qxe6 19.Re1 Qxe1+ 20.Qxe1+ Kd8 21.Qh4+ Kc7 22.Qf4+ Kd8 23.Nd5 Bxd5 24.Qg5+ Kc7 25.Qxd5 axb5 26.Qxa8 Rf8 27.Qa5+ Kc6 28.a4 bxa4 29.Qxa4+ Kb6 30.Qb4+ Kc7 31.Qa5+ Kd6 32.Qa3+ Kc7 33.Qg3+ Kc8 34.b4 Nc6 35.Qh4 Nf6 36.b5 Ne5 37.Qd4
+/= (0.34) Depth: 19/54 00:00:05 96162kN
14.Re1 Qd6 15.Bxb5 Be7 16.Nxe6 fxe6 17.Bxe7 Qxe7 18.Rxe6 Qxe6 19.Re1 Qxe1+ 20.Qxe1+ Kd8 21.Qh4+ Kc7 22.Qf4+ Kd8 23.Nd5 Bxd5 24.Qg5+ Kc7 25.Qxd5 axb5 26.Qxa8 Rf8 27.Qa5+ Kc6 28.a4 bxa4 29.Qxa4+ Kb6 30.Qb4+ Kc7 31.Qa5+ Kd6 32.Qa3+ Kc7 33.Qg3+ Kc8 34.b4 Nc6 35.Qh4 Nf6 36.b5 Ne5 37.Qd4
+/= (0.34) Depth: 20/54 00:00:06 135mN
14.Re1 Qd6
+/= (0.27 --) Depth: 21/59 00:00:10 250mN
14.Nxe6
+/= (0.41 ++) Depth: 21/59 00:00:21 559mN
14.Nxe6
+/= (0.54 ++) Depth: 21/59 00:00:22 597mN
14.Nxe6
+/- (0.94 ++) Depth: 21/59 00:00:26 701mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Bxe4 18.Qxe4 Ra7 19.Nd5 Bd6 20.Qg4 0-0 21.Qe6+ Kh8 22.Qxd6 Rf5 23.h4 a5 24.Kb1 a4 25.Be3 Rb7 26.g4 Qf8 27.Qe6 Rf3 28.a3 Qf7 29.Qd6
+- (1.81) Depth: 21/66 00:00:42 1157mN
14.Nxe6
+- (1.93 ++) Depth: 22/66 00:00:57 1586mN
14.Nxe6 fxe6 15.Bd3 Be7 16.Bxe7 Qh5 17.Qxh5 gxh5 18.Bd6 Nf6 19.Rhf1 Nbd7 20.Rde1 Kf7 21.Ne4 Bxe4 22.Bxe4 Rac8 23.b3 Rhg8 24.Bb7 Rcd8 25.Bc7 Rde8 26.Bxa6 Rxg2 27.Bxb5 Rc8 28.Bc6 Rg5 29.Bxd7 Rxc7 30.Rxe6 Rxd7 31.Rfxf6+ Kg7
+- (1.98) Depth: 22/66 00:01:12 2017mN
14.Nxe6
+- (2.10 ++) Depth: 23/66 00:01:33 2621mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Rac8 21.Nf6+ Bxf6 22.Bxf6 Nf7 23.Rd2 a5 24.b3 e5 25.Kb2 Rc7 26.Qe1 Re8 27.Qe3 a4 28.Qc5 axb3 29.axb3 Re6 30.Rf2 Rd7 31.h4
+- (2.10) Depth: 23/66 00:01:56 3299mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Rac8 21.Nf6+ Bxf6 22.Bxf6 Nf7 23.Rd2 e5 24.b3 Rfe8 25.Kb2 Rc7 26.Qe1 Bb7 27.g4 b4 28.h4 a5 29.g5 Ba8 30.Qe3 Rc3
+- (2.09) Depth: 24/66 00:02:18 3953mN
14.Nxe6
+- (2.21 ++) Depth: 25/66 00:03:41 6461mN
14.Nxe6
+- (2.46 ++) Depth: 25/67 00:05:14 9203mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Kb1 a5 23.c3 a4 24.Qb7 a3 25.b3 Rb8 26.Qe4 Nf7 27.Be7 Rfe8 28.Bb4 Rbc8 29.Qe3 Bf8 30.Qe2 Bxb4 31.cxb4 Rb8 32.Rd7
+- (2.42) Depth: 25/67 00:05:53 10419mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Kb1 a5 23.c3 a4 24.Qb7 a3 25.b3 Rb8 26.Qe4 Nf7 27.Be7 Rfe8 28.Bb4 Rbc8 29.Qe3 Bf8 30.Qe2 Bxb4 31.cxb4 Rb8 32.Rd7
+- (2.42) Depth: 26/67 00:07:54 14150mN
14.Nxe6
+- (2.55 ++) Depth: 27/71 00:15:51 29069mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Kb1 a5 23.c3 a4 24.Qb7 Rb8 25.Qa6 Rfe8 26.Bf4 b4 27.Bxe5 Bxe5 28.Qa5 Bxh2 29.cxb4 Ra8 30.Qg5 Rf8 31.Qg4 Rf6 32.b5 Bc7 33.Qe4 Rc8 34.Qxa4 Rf2 35.Qe4
+- (2.57) Depth: 27/78 00:21:08 38718mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Bf4 Rf5 23.g3 a5 24.a4 bxa4 25.Qxa4 Ref8 26.Qb3 Re8 27.h4 Nf7 28.Qc4 e5 29.Be3 e4 30.g4 Rf3 31.Rd7 a4 32.g5 Bh8 33.Rb7 Rd8
+- (2.48) Depth: 28/78 00:28:45 53724mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Bf4 Rf5 23.g3 a5 24.a4 bxa4 25.Qxa4 Ref8 26.Qb3 Re8 27.h4 Nf7 28.Qc4 e5 29.Be3 e4 30.g4 Rf3 31.Rd7 a4 32.g5 Bh8 33.Rb7 Rd8
+- (2.48) Depth: 29/78 00:46:57 89032mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rac8 22.Qb7 a5 23.Kb1 b4 24.b3 Rfe8 25.Bc1 Rcd8 26.Rxd8 Rxd8 27.Qa6 Nf7 28.Qxa5 Rd1 29.Qa8+ Nd8 30.Qf3 Rg1 31.Qf2 Rd1 32.Qf4 Bf8 33.Qf3 Rh1 34.Qd3 Nf7
+- (2.50) Depth: 30/78 01:31:32 177925mN
tano-urayoan
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Location: San Juan, Puerto Rico

Re: Cooking The Opening Book with Stockfish

Post by tano-urayoan »

Don wrote: Here are some if/then moves. If you play the underlined moves I will respond with the given move, otherwise give me your alternative.

14. Re1 Qd6
15. Bxb5 Be7
16. Nxe6 fxe6
17. Bxe7 Qxe7
18. Rxe6 Qxe6
19. Re1 Qxe1+
20. Qxe1+ Kd8

Don
I agree with all this conditional moves. I will post my reply later thank you.
User avatar
Don
Posts: 5106
Joined: Tue Apr 29, 2008 4:27 pm

Re: Cooking The Opening Book with Stockfish

Post by Don »

tano-urayoan wrote:
Don wrote: Here are some if/then moves. If you play the underlined moves I will respond with the given move, otherwise give me your alternative.

14. Re1 Qd6
15. Bxb5 Be7
16. Nxe6 fxe6
17. Bxe7 Qxe7
18. Rxe6 Qxe6
19. Re1 Qxe1+
20. Qxe1+ Kd8

Don
I agree with all this conditional moves. I will post my reply later thank you.
Let me know what you come up with.

I played a second playout game and it came out a draw too. This one featured 16. Ne4 instead of 16. Nxe6 and I think white had a better game but it still ended in a draw.
rodolfoleoni
Posts: 263
Joined: Mon Nov 29, 2010 9:16 pm

Re: Cooking The Opening Book with Stockfish

Post by rodolfoleoni »

Very interesting work. I think it could be easier if Komodo had a persistent hash system. Then, this position could be used in a bullet vs. the other top engines. The resulting hash file could give us all the answers about the position.
Rodolfo (The Baron Team)
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Don
Posts: 5106
Joined: Tue Apr 29, 2008 4:27 pm

Re: Cooking The Opening Book with Stockfish

Post by Don »

rodolfoleoni wrote:Very interesting work. I think it could be easier if Komodo had a persistent hash system. Then, this position could be used in a bullet vs. the other top engines. The resulting hash file could give us all the answers about the position.
Recent versions of Komodo have improvements in the persistence of data.
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Don
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Joined: Tue Apr 29, 2008 4:27 pm

Re: Cooking The Opening Book with Stockfish

Post by Don »

I have not yet looked too hard at 14. Bxb5 as it appears that 14. Re1 is better, at least at the moment.

14. Re1 Qc5 ? - not as good as Qd6, in playouts White wins.

kgburcham wrote:[White "Audino Marco (ITA)"]
[Black "Staroske Uwe (GER)"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2238"]
[BlackElo "2421"]
[PlyCount "37"]
[EventDate "1973.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5
dxe5 9. fxe5 Qc7 10. Qe2 Nfd7 11. O-O-O Bb7 12. Qh5 g6 13. Qh4 Qxe5 14. Bxb5
axb5 15. Rhe1 Qc5 16. Rxe6+ fxe6 17. Nxe6 Qf5 18. Nxb5 Ra5 19. Nec7+ 1-0

Audino Marco (ITA) - Staroske Uwe (GER), 1973
[D] rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 1

Houdini 2.0c Pro x64:
Multi pv
1. +- (2.50): 14.Nxe6 fxe6
2. +/= (0.29): 14.Re1 Qd6 15.Bxb5 Be7 16.Nxe6 fxe6 17.Bxe7 Qxe7
3. +/= (0.29): 14.Bxb5 axb5 15.Ncxb5 Ra5 16.Bf4 Rxb5 17.Bxe5 Rxe5
4. = (0.00): 14.Nf3 Bxf3 15.gxf3 Bg7 16.Kb1 Nc6 17.Bf4 Qf6 18.Bg5 Qe5
__________________________________________________________
Houdini 2.0c Pro x64:

14.Re1
= (0.24 ++) Depth: 18/54 00:00:03 56933kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.Kb1 0-0 21.c3 Qc5 22.Rhf1 Rc8 23.Rd1 Rcd8 24.Rd2 e5 25.Nb3 Qb6 26.Rfd1 Rxd2 27.Nxd2
+/= (0.28) Depth: 18/54 00:00:03 64020kN
14.Re1 Qd6 15.Bxb5 Be7 16.Nxe6 fxe6 17.Bxe7 Qxe7 18.Rxe6 Qxe6 19.Re1 Qxe1+ 20.Qxe1+ Kd8 21.Qh4+ Kc7 22.Qf4+ Kd8 23.Nd5 Bxd5 24.Qg5+ Kc7 25.Qxd5 axb5 26.Qxa8 Rf8 27.Qa5+ Kc6 28.a4 bxa4 29.Qxa4+ Kb6 30.Qb4+ Kc7 31.Qa5+ Kd6 32.Qa3+ Kc7 33.Qg3+ Kc8 34.b4 Nc6 35.Qh4 Nf6 36.b5 Ne5 37.Qd4
+/= (0.34) Depth: 19/54 00:00:05 96162kN
14.Re1 Qd6 15.Bxb5 Be7 16.Nxe6 fxe6 17.Bxe7 Qxe7 18.Rxe6 Qxe6 19.Re1 Qxe1+ 20.Qxe1+ Kd8 21.Qh4+ Kc7 22.Qf4+ Kd8 23.Nd5 Bxd5 24.Qg5+ Kc7 25.Qxd5 axb5 26.Qxa8 Rf8 27.Qa5+ Kc6 28.a4 bxa4 29.Qxa4+ Kb6 30.Qb4+ Kc7 31.Qa5+ Kd6 32.Qa3+ Kc7 33.Qg3+ Kc8 34.b4 Nc6 35.Qh4 Nf6 36.b5 Ne5 37.Qd4
+/= (0.34) Depth: 20/54 00:00:06 135mN
14.Re1 Qd6
+/= (0.27 --) Depth: 21/59 00:00:10 250mN
14.Nxe6
+/= (0.41 ++) Depth: 21/59 00:00:21 559mN
14.Nxe6
+/= (0.54 ++) Depth: 21/59 00:00:22 597mN
14.Nxe6
+/- (0.94 ++) Depth: 21/59 00:00:26 701mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Bxe4 18.Qxe4 Ra7 19.Nd5 Bd6 20.Qg4 0-0 21.Qe6+ Kh8 22.Qxd6 Rf5 23.h4 a5 24.Kb1 a4 25.Be3 Rb7 26.g4 Qf8 27.Qe6 Rf3 28.a3 Qf7 29.Qd6
+- (1.81) Depth: 21/66 00:00:42 1157mN
14.Nxe6
+- (1.93 ++) Depth: 22/66 00:00:57 1586mN
14.Nxe6 fxe6 15.Bd3 Be7 16.Bxe7 Qh5 17.Qxh5 gxh5 18.Bd6 Nf6 19.Rhf1 Nbd7 20.Rde1 Kf7 21.Ne4 Bxe4 22.Bxe4 Rac8 23.b3 Rhg8 24.Bb7 Rcd8 25.Bc7 Rde8 26.Bxa6 Rxg2 27.Bxb5 Rc8 28.Bc6 Rg5 29.Bxd7 Rxc7 30.Rxe6 Rxd7 31.Rfxf6+ Kg7
+- (1.98) Depth: 22/66 00:01:12 2017mN
14.Nxe6
+- (2.10 ++) Depth: 23/66 00:01:33 2621mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Rac8 21.Nf6+ Bxf6 22.Bxf6 Nf7 23.Rd2 a5 24.b3 e5 25.Kb2 Rc7 26.Qe1 Re8 27.Qe3 a4 28.Qc5 axb3 29.axb3 Re6 30.Rf2 Rd7 31.h4
+- (2.10) Depth: 23/66 00:01:56 3299mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Rac8 21.Nf6+ Bxf6 22.Bxf6 Nf7 23.Rd2 e5 24.b3 Rfe8 25.Kb2 Rc7 26.Qe1 Bb7 27.g4 b4 28.h4 a5 29.g5 Ba8 30.Qe3 Rc3
+- (2.09) Depth: 24/66 00:02:18 3953mN
14.Nxe6
+- (2.21 ++) Depth: 25/66 00:03:41 6461mN
14.Nxe6
+- (2.46 ++) Depth: 25/67 00:05:14 9203mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Kb1 a5 23.c3 a4 24.Qb7 a3 25.b3 Rb8 26.Qe4 Nf7 27.Be7 Rfe8 28.Bb4 Rbc8 29.Qe3 Bf8 30.Qe2 Bxb4 31.cxb4 Rb8 32.Rd7
+- (2.42) Depth: 25/67 00:05:53 10419mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Kb1 a5 23.c3 a4 24.Qb7 a3 25.b3 Rb8 26.Qe4 Nf7 27.Be7 Rfe8 28.Bb4 Rbc8 29.Qe3 Bf8 30.Qe2 Bxb4 31.cxb4 Rb8 32.Rd7
+- (2.42) Depth: 26/67 00:07:54 14150mN
14.Nxe6
+- (2.55 ++) Depth: 27/71 00:15:51 29069mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Kb1 a5 23.c3 a4 24.Qb7 Rb8 25.Qa6 Rfe8 26.Bf4 b4 27.Bxe5 Bxe5 28.Qa5 Bxh2 29.cxb4 Ra8 30.Qg5 Rf8 31.Qg4 Rf6 32.b5 Bc7 33.Qe4 Rc8 34.Qxa4 Rf2 35.Qe4
+- (2.57) Depth: 27/78 00:21:08 38718mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Bf4 Rf5 23.g3 a5 24.a4 bxa4 25.Qxa4 Ref8 26.Qb3 Re8 27.h4 Nf7 28.Qc4 e5 29.Be3 e4 30.g4 Rf3 31.Rd7 a4 32.g5 Bh8 33.Rb7 Rd8
+- (2.48) Depth: 28/78 00:28:45 53724mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rae8 22.Bf4 Rf5 23.g3 a5 24.a4 bxa4 25.Qxa4 Ref8 26.Qb3 Re8 27.h4 Nf7 28.Qc4 e5 29.Be3 e4 30.g4 Rf3 31.Rd7 a4 32.g5 Bh8 33.Rb7 Rd8
+- (2.48) Depth: 29/78 00:46:57 89032mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.Bxc6 Bxc6 20.Ne4 Bxe4 21.Qxe4 Rac8 22.Qb7 a5 23.Kb1 b4 24.b3 Rfe8 25.Bc1 Rcd8 26.Rxd8 Rxd8 27.Qa6 Nf7 28.Qxa5 Rd1 29.Qa8+ Nd8 30.Qf3 Rg1 31.Qf2 Rd1 32.Qf4 Bf8 33.Qf3 Rh1 34.Qd3 Nf7
+- (2.50) Depth: 30/78 01:31:32 177925mN
tano-urayoan
Posts: 638
Joined: Thu Aug 30, 2007 8:23 pm
Location: San Juan, Puerto Rico

Re: Cooking The Opening Book with Stockfish

Post by tano-urayoan »

21. Nd5

[d]rn1k3r/1b1n3p/p5p1/1B1N4/5Q2/8/PPP3PP/2K5 b - - 0 10