Cooking The Opening Book with Stockfish

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acase
Posts: 987
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Cooking The Opening Book with Stockfish

Post by acase »

It looks like Stockfish has found an improvement in a rarely played line in the B96 Najdorf Sicilian.

In the following positon the "book" moves are 14.Bxb5 or 14.Re1, however in a virtuoso tactical display Stockfish 2.2.2 uncorked the nice 14.Nxe6!!


[D]rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 14


Spark 1.0 also finds this move. Here is one of the games the position came from:


[Event "?"]
[Site "?"]
[Date "1973.??.??"]
[Round "?"]
[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



And here is the Stockfish analysis carried out to 39 plies (although it looks like the eval is coming down a little bit on the 40th ply):



Analysis by Stockfish 2.2.2 JA 64bit:

14.Nf3 Bxf3 15.gxf3 h6 16.Bf4 Qf6 17.Qxf6 Nxf6 18.Be5 Bg7 19.Ne4 Nxe4 20.Bxg7 Rh7
+/- (0.96) Depth: 7/11 00:00:00 8kN
14.Nf3 Bxf3 15.gxf3 h6 16.Bf4 Qf6 17.Qg3 Bg7 18.Bd6 Qg5+ 19.Bf4
+/- (1.05) Depth: 8/12 00:00:00 13kN
14.Nf3 Bxf3 15.gxf3 h6 16.Bf4 Qf6 17.Qxf6 Nxf6 18.Be5 Bg7 19.Ne4 Nxe4 20.Bxg7 Rh7 21.Bxb5+ axb5 22.fxe4 Rxg7
+/- (1.05) Depth: 9/14 00:00:00 19kN
14.Nf3 Bxf3 15.gxf3 h6 16.Bf4 Qf6 17.Qxf6 Nxf6 18.Be5 Bg7 19.Ne4 Nxe4 20.Bxg7 Rh7 21.Bxb5+ axb5 22.fxe4 Rxg7
+/- (1.05) Depth: 10/17 00:00:00 25kN
14.Re1 Qc5 15.Bd3 Nc6 16.Nb3 Qd6 17.Kb1 Bg7 18.Ne4 Qc7 19.Nf6+ Nxf6 20.Bxf6 0-0 21.Bxg7 Kxg7
+/- (0.96) Depth: 11/18 00:00:00 190kN
14.Re1 Qc5 15.Bd3 Nc6 16.Nb3 Qd6 17.Rhf1 Nce5 18.Be4 Qb8 19.Nd4 b4 20.Bxb7 bxc3 21.Qe4 cxb2+ 22.Kxb2
+- (1.41) Depth: 12/22 00:00:00 290kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Qh4 Bc5 20.Bh6 Nc6 21.Nxc6 Qxc6 22.Bg7 Be7 23.Qf2
+/- (1.33) Depth: 13/22 00:00:00 523kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Qh4 Bc5 20.Bh6 Nc6 21.Nxc6 Qxc6 22.Bg7 Be7 23.Qf2
+/- (1.33) Depth: 14/22 00:00:00 540kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Qh4 Bc5 20.Bh6 Nc6 21.Nxc6 Qxc6 22.Bg7 Be7 23.Qf2
+/- (1.33) Depth: 15/22 00:00:00 606kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Be2 0-0 20.Qe3 Nf6 21.Rhf1 e5 22.Bf3 e4 23.Bxe4 Re8 24.Rf4 Nd5 25.Bxd5 Qxe3+ 26.Rxe3 Rxe3
+/- (0.88) Depth: 16/26 00:00:00 1817kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Qh4 e5 20.Nf3 Ra8 21.Rd1 Nc6 22.Ng5 Be7 23.Qh6 Bf8 24.Qh3 Bc5 25.Bg1 Bxg1 26.Rxg1
+/- (1.25) Depth: 17/27 00:00:00 3160kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Nc6 Qxc6 20.Bxa7 Qxe4 21.Rxe4 Nc6 22.Bf2 Bc5 23.Bh4 Be7 24.Bf2 Nf6 25.Rf4 e5 26.Rf3 Ne4
+/- (1.01) Depth: 18/33 00:00:01 6581kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Nd5 20.Bxb5+ axb5 21.Nxb5 Qa6 22.Rxd5 exd5 23.Nxa7 Qxa2
+/- (0.92 --) Depth: 19/33 00:00:02 9076kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Nd5 20.Bxb5+ axb5 21.Nxb5 Qa6 22.Rxd5 exd5 23.Nxa7 Qxa2 24.Qc3 Qa1+ 25.Kd2
+/- (1.17 ++) Depth: 19/34 00:00:02 9590kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Nd5 20.Bxb5+ axb5 21.Nxb5 Qa6 22.Rxd5 exd5 23.Nxa7 Qxa2 24.Qc3 Qa1+ 25.Kd2
+/- (1.35 ++) Depth: 19/34 00:00:02 10119kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Be2 0-0 20.Kb1 Nc5 21.Qe3 Rd8 22.Bf3 Rad7 23.c3 Qh4
+/- (0.84) Depth: 19/34 00:00:02 11837kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Qd5 20.Qg3 Nbd7 21.Nxb5 Qxa2 22.Nc7+ Kd8 23.Nxe6+ fxe6 24.Qb8#
+/- (0.92 ++) Depth: 20/34 00:00:03 14161kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Qd5 20.Qg3 Nbd7 21.Nxb5 Qxa2 22.Nc7+ Kd8 23.Nxe6+ fxe6 24.Qb8#
+/- (1.01 ++) Depth: 20/34 00:00:03 14664kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Qd5 20.Qg3 Nbd7 21.Nxb5 Qxa2 22.Nc7+ Kd8 23.Nxe6+ fxe6 24.Qb8#
+/- (1.13 ++) Depth: 20/34 00:00:03 15007kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bh6 Nf6 19.Qf3 Qd5 20.Qg3 Nbd7 21.Nxb5 Qxa2 22.Nc7+ Rxc7 23.Qxc7 Qa1+ 24.Kd2 Qxb2 25.Qc8+ Bd8 26.Bxa6 Nc5
+/- (0.76 --) Depth: 20/34 00:00:04 17059kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bf4 Qb4 19.Bh6 Bf8 20.Be3 Be7 21.Kb1 0-0 22.c3 Qd6 23.Qf3 Ne5 24.Nxb5 axb5 25.Rxd6 Nxf3 26.Bxa7 Bxd6 27.gxf3
+/- (0.72) Depth: 20/35 00:00:06 25526kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bf4 Qb4 19.Bh6 Bf8 20.Be3 Be7 21.Kb1 0-0 22.c3 Qd6 23.Qf3 Qc7 24.Nc2 Nc5
+/= (0.64 --) Depth: 21/35 00:00:09 38320kN
14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Rd1 Be7 18.Bf4 Qb4 19.Bh6 Bf8 20.Be3 Bg7 21.c3 Qa4 22.Nf5 Qxe4 23.Nd6+ Ke7 24.Nxe4 Rc7 25.Kb1 e5
+/= (0.56 --) Depth: 21/35 00:00:11 48844kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Be2 0-0 20.Qe3 Nf6 21.Rhf1 e5 22.Nb3 Rc7 23.Qg5 Nbd7 24.Bxa6 Qe6 25.Bd3 Ra8 26.Kb1
+/= (0.68) Depth: 21/36 00:00:13 55738kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bc4 0-0 20.Qg4 Nf6 21.Qh4 e5 22.Kb1 Rc8 23.Nf3 e4 24.Bd3
+/- (0.76 ++) Depth: 22/36 00:00:14 60804kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bc4 0-0 20.Qg4 Nf6 21.Qh4 e5 22.Kb1 Rc8 23.Nf3 e4 24.Bd3
+/- (0.84 ++) Depth: 22/36 00:00:14 61489kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bc4 0-0 20.Qg4 Nb6 21.Nxe6 Nxc4 22.Nxf8 Qb4 23.Qd4 Nc6 24.Qf6 Qd2+ 25.Kb1 Nd4
+/= (0.60 --) Depth: 22/36 00:00:20 84039kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bc4 0-0 20.Qg4 Nb6 21.Bb3 Qc5 22.Rhf1 N8d7 23.Kb1 Rc7 24.Qg3 a5 25.c3 Nc4 26.Bxc4 Qxc4 27.Rf2
+/- (0.76) Depth: 22/36 00:00:21 92525kN
14.Re1 Qd6 15.Bxb5 axb5 16.Ncxb5 Qc5 17.Qf4 e5 18.b4
+/- (0.84 ++) Depth: 23/36 00:00:23 100mN
14.Re1 Qd6 15.Bxb5 axb5 16.Ncxb5 Qc5 17.Qf4 e5 18.b4
+/- (0.92 ++) Depth: 23/36 00:00:24 103mN
14.Nxe6 fxe6 15.Bd3 Nc5 16.Bxg6+ hxg6 17.Rd8+ Kf7 18.Rf1+ Kg7 19.Bf6+
+/- (1.05 ++) Depth: 23/36 00:00:33 143mN
14.Nxe6 fxe6 15.Bd3 Nc5 16.Bxg6+ hxg6 17.Rd8+ Kf7 18.Rf1+ Kg7 19.Bf6+
+/- (1.23 ++) Depth: 23/36 00:00:34 144mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Nc6 17.Rhe1 Nc5 18.Kb1 Be7 19.Bxe7 Nxe7 20.Bxb7 Nxb7 21.Qe4 0-0 22.Qxb7 Nd5 23.Qc6 Nxc3+ 24.bxc3 Ra7 25.Qxe6+ Qf7 26.Qd6 Qf2 27.g4 Kg7 28.g5 Kg8 29.Re6
+/- (0.88) Depth: 23/38 00:00:35 153mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Nc6 17.Rhe1 Nc5 18.Kb1 Be7 19.Bxe7 Nxe7 20.Bxb7 Nxb7 21.Qe4 0-0 22.Qxb7 Nd5 23.Qc6 Nxc3+ 24.bxc3 Ra7 25.Qxe6+ Qf7 26.Qd6 Qf2 27.g4 Kg7 28.g5 Kg8 29.Re6
+/- (0.88) Depth: 24/38 00:00:41 176mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Nc6 17.Rhe1 Nc5 18.Qh3 e5 19.Nd5 Nd4 20.Nf6+ Kd8 21.Bxb7 Qxb7 22.Rxe5
+/- (0.96 ++) Depth: 25/41 00:00:46 199mN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Bxb2+ 17.Kxb2
+/- (1.05 ++) Depth: 25/41 00:00:47 203mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe1 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Qf7 22.Qd6 0-0 23.Rxe7 Qf5 24.g4
+/- (1.17 ++) Depth: 25/41 00:00:48 206mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Bxe4 17.Qxe4 h6 18.Qxa8 hxg5 19.Rxd7 Qxd7 20.Qxb8+ Qd8 21.Qe5
+/- (1.35 ++) Depth: 25/41 00:00:49 212mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Ra7 17.Rhe1 Bxe4 18.Nxe4 h6 19.Qg4 hxg5 20.Qxe6+ Be7 21.Nd6+ Kd8 22.Nf7+ Kc7 23.Qxe7 Rf8 24.Qe3 Qxf7 25.Qxa7+ Kc8 26.Kb1
+- (1.62 ++) Depth: 25/41 00:00:53 229mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Rxh2 22.Qd6 Rh7 23.Nxe7 Qxe7 24.Rxe7+ Rxe7 25.Qxg6+ Kd8 26.g4 Re5 27.Kb1 a5 28.b3 a4 29.Qg8+ Kc7
+- (1.65) Depth: 25/41 00:01:01 267mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Rxh2 22.Qd6 Rh7 23.Nxe7 Qxe7 24.Rxe7+ Rxe7 25.Qxg6+ Kd8 26.Qxg5 Nc6 27.Rd6 Rb6 28.Re6
+- (1.73 ++) Depth: 26/42 00:01:04 278mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Rxh2 22.Qd6 Rh7 23.Nxe7 Qxe7 24.Rxe7+ Rxe7 25.Qxg6+ Kd8 26.Qxg5 Nc6 27.Rd6 Rb6 28.Re6
+- (1.81 ++) Depth: 26/42 00:01:05 285mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Rh7 22.Qd6 Qf7 23.g3 Kd8
+- (1.57 --) Depth: 26/42 00:01:10 305mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Be4 Qf6 21.Bxg6+ Kd8
+/- (1.39 --) Depth: 26/42 00:01:14 326mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Rh7 22.Qd6 Qf7 23.Kb1 Kd8 24.Nxe7 Qf8 25.Nc6+ Kc8 26.Qxg6 Rf7 27.Nd4 Nc5 28.Nf5
+- (1.93 ++) Depth: 26/49 00:01:16 332mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 h6 17.Bxb7 hxg5 18.Qe4 Ra7 19.Qxe6+ Be7 20.Nd5 Rxb7 21.Rhe1 Rh7 22.Kb1 Qf7 23.Qd6 Kd8 24.Nxe7 Qf8 25.Nc6+ Kc8 26.Qxg6 Rf7 27.Nd4 Rb6 28.Qxg5 Nc5 29.h4 Nbd7 30.g4 Kb8 31.Nf5 Ne6 32.Qe3 Ndc5 33.h5 Rc6
+- (1.45) Depth: 26/49 00:01:18 341mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kxd7 20.Rd1+ Ke8 21.Qa4+ Kf7 22.Rf1+
+- (1.53 ++) Depth: 27/49 00:01:30 395mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 axb5 18.Nxb5 e4 19.Nc7+ Kf7 20.Rf1+
+- (1.61 ++) Depth: 27/49 00:01:33 410mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 Ne5 17.Be4 Nbc6 18.Bxc6+ Bxc6 19.Qh3 Bd7 20.Bf4 Nc6 21.Rxe6+ Bxe6 22.Qxe6+ Be7
+- (1.73 ++) Depth: 27/49 00:01:35 422mN
14.Nxe6 f6 15.Bxf6 Nxf6 16.Bxb5+ axb5 17.Rhe1
+- (1.91 ++) Depth: 27/49 00:01:41 447mN
14.Nxe6 f6 15.Bxf6 Nxf6 16.Bxb5+ axb5 17.Rhe1
+- (2.19 ++) Depth: 27/49 00:01:46 472mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Kb8 23.Nb6 Ka7 24.Nxa8 Kxa8 25.Rxe5 Qc7 26.c4 Rf8 27.Re2 Kb8 28.h4 Rf1+ 29.Kc2 Rf4 30.b3 Be4+ 31.Kb2 Bd3 32.Rd2 h6 33.Qd5 Be4 34.Qd8+ Qxd8 35.Rxd8+ Kc7 36.Rd7+ Kb6
+- (2.42) Depth: 27/49 00:01:56 514mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Kb8 23.Rxe5 Rf8 24.Qg3 Ka7 25.Qe3+ Kb8 26.Nb6 Rf1+ 27.Kd2 Bxg2 28.Nd7+ Kc8 29.Qc5+ Kd8 30.Qb6+ Ke8 31.Bh3+
+- (2.50 ++) Depth: 28/50 00:02:08 572mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 Ne5 17.Bxb5+ Kf7 18.Rd8 Kg8 19.Bh6
+- (2.58 ++) Depth: 28/50 00:02:18 617mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Rxe5 Raf8 23.Bc4 Re8 24.Rxe8 Rxe8
+- (2.34 --) Depth: 28/50 00:02:29 660mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Rxe5 Raf8 23.Bc4 Re8 24.Rxe8 Rxe8
+- (2.16 --) Depth: 28/50 00:02:34 680mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Rb8 30.Rf1 e4 31.Qa5+ Kd7 32.Qb5+ Ke7 33.Qg5+ Kd6 34.Qg3+ Kd7 35.Qg4+ Kc7 36.Rf7+ Kb6
+- (2.66) Depth: 28/50 00:02:38 700mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Rb8 30.Rf1 e4 31.Qa5+ Kd7 32.Qb5+ Ke7 33.Qg5+ Kd6 34.Qg3+ Kd7 35.Qg4+ Kc7 36.Rf7+ Kb6 37.Qe6+
+- (2.74 ++) Depth: 29/54 00:02:49 752mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 Ne5 17.Bxb5+ Kf7 18.Rd8
+- (2.82 ++) Depth: 29/63 00:03:03 817mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qb6 31.Bxc8 Rxc8 32.Qxb6+ Kxb6 33.Re1 Rf8 34.Rxe5 Rf1+ 35.Kc2 Rf2+ 36.Kb3 Rxg2 37.h4 Kc6 38.Re7 h6 39.a4 Kc5 40.Rh7 Rf2
+- (2.90) Depth: 29/75 00:03:31 945mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7
+- (2.98 ++) Depth: 30/75 00:04:08 1120mN
14.Nxe6 fxe6 15.Bd3 Be7 16.Bxe7 Qh5 17.Qb4 Nc6 18.Qd6 Nxe7 19.Bxg6+ hxg6 20.Qxd7+ Kf8 21.Qxb7 Qg5+ 22.Kb1 Re8 23.Qxa6 Qxg2 24.Qxe6 Rxh2 25.Rxh2
+- (3.07 ++) Depth: 30/75 00:04:39 1268mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Rxe5 Rae8 23.a3
+- (2.82 --) Depth: 30/75 00:05:29 1497mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qb6 31.Qxb6+ Kxb6 32.Bxc8 Rxc8 33.Re1 Rf8 34.Rxe5 Rf2 35.Re7 Rxg2 36.Rxh7 Re2
+- (2.78) Depth: 30/75 00:05:40 1547mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+
+- (2.86 ++) Depth: 31/75 00:06:04 1655mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 Ne5 17.Bxb5+ Nbc6 18.Bxc6+ Bxc6 19.Qf4 h6 20.Bf6
+- (2.94 ++) Depth: 31/75 00:06:34 1792mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+
+- (2.70 --) Depth: 31/75 00:07:14 1976mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qb6 31.Bxc8 Rxc8 32.Qa3 Kb7 33.Qe7+ Qc7 34.Qb4+ Qb6 35.Qe4+ Qc6 36.Re1 Re8 37.Kc2 Qxe4+ 38.Rxe4
+- (2.70) Depth: 31/75 00:07:20 2002mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kxd7 20.Rd1+ Ke6
+- (2.78 ++) Depth: 32/75 00:08:06 2224mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kxd7 20.Rd1+ Ke6 21.Qh3+ Kf7 22.Bxe7 Rhb8 23.Bg5 Kg8 24.Rd7
+- (2.86 ++) Depth: 32/75 00:08:30 2339mN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Qxc3 17.Rxe6+ Kf7
+- (2.98 ++) Depth: 32/75 00:09:09 2526mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qb6 31.Bxc8 Rxc8 32.Qa3 Kb7 33.Qe7+ Qc7 34.Qb4+ Qb6 35.Qe4+ Qc6 36.Re1 Re8 37.Kc2 Qxe4+ 38.Rxe4 Kb6 39.b3 g5 40.a4 Kc5 41.a5
+- (3.03) Depth: 32/75 00:11:16 3121mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qd6 31.Bxc8 Rxc8 32.Qa7+ Kc6 33.Qa4+ Kb6 34.Qb3+ Ka7 35.Rd1 Qc5 36.Qa4+ Kb8 37.Qa6 e4
+- (3.11 ++) Depth: 33/75 00:13:42 3821mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.a4 b4 20.Ne2 Rae8 21.Nf4 Na5 22.Nd3 Nxd3+ 23.Bxd3 Nc6 24.Be4 Rf7 25.Rd6 Na5 26.Bxb7 Nxb7 27.Rxa6 Nc5
+- (2.94 --) Depth: 33/75 00:17:50 4981mN
14.Nxe6 fxe6 15.Bd3
+- (3.19 ++) Depth: 33/75 00:18:32 5178mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8
+- (2.82 --) Depth: 33/96 00:21:08 5946mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5
+- (2.55 --) Depth: 33/96 00:22:49 6405mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qb6 31.Bxc8 Rxc8 32.Qa3 Kb7 33.Qe7+ Qc7 34.Qb4+ Qb6 35.Qe4+ Qc6 36.Qxe5 Qxg2 37.Qb5+ Ka7 38.Qd7+ Qb7 39.Rd1 Rc7 40.Qd4+ Qb6 41.Kc2 Rf7 42.Qxb6+ Kxb6 43.a4 Ra7 44.b3 Kc6 45.Rd8 Kc7 46.Rf8
+- (3.27) Depth: 33/96 00:24:50 6968mN
14.Nxe6 fxe6 15.Bd3 Bg7
+- (3.19 --) Depth: 34/96 00:30:55 8722mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.a4 Rf7 20.Qh3 b4 21.Ne2 Re8 22.Qh4 a5
+- (3.11 --) Depth: 34/96 00:32:50 9258mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Nbc6 19.a4 Rf7 20.Qh3 b4 21.Ne2 Re8 22.Nf4 Bc8 23.g3 Rd7 24.Rxd7 Bxd7 25.b3
+- (2.98 --) Depth: 34/96 00:35:00 9855mN
14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 0-0 17.Rxe5 Nxe5 18.Be4 Bxe4 19.Nxe4 Nbc6 20.Nc5
+- (3.35 ++) Depth: 34/96 00:37:06 10437mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5
+- (2.80 --) Depth: 34/96 00:42:28 11968mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Raf8 24.Qe3 Kd8 25.Qb6+ Qc7 26.Qe6 Qd7 27.Qxe5 Qc7 28.Qe6 Qf4+ 29.Kb1 Qf6 30.Qe2 Re8 31.Be6 Qxe6 32.Qxe6 Rxe6 33.Rxe6 Rf8 34.b4 Rf4 35.a3 a5 36.bxa5 Kd7 37.Rb6 Kc7 38.Ra6 Rf2 39.Ra7+ Kc6
+- (3.07) Depth: 34/96 00:44:13 12468mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 Qf7 17.Qh3 Nc5 18.Bxb5+ Nc6 19.Nd5 axb5 20.Nf6+ Ke7 21.Qc3
+- (3.15 ++) Depth: 35/96 00:55:49 15796mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7
+- (2.98 --) Depth: 35/96 01:00:36 17141mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Raf8
+- (2.86 --) Depth: 35/96 01:05:11 18425mN
14.Nxe6 fxe6
+- (2.68 --) Depth: 35/96 01:10:32 19969mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Raf8 24.Qg3 Kd8 25.Rd1 Qc7 26.Qh4+ Ke8 27.g3 Rf2 28.Bb3 Qb6 29.Ba4+ Kf8 30.Qh6+ Kg8 31.Bb3+ Rf7 32.Bxf7+ Kxf7
+- (3.23 ++) Depth: 35/96 01:17:01 21856mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.c3 Qb6 31.Bxc8 Rxc8 32.Qa3 Kb7 33.Re1 Rc7 34.Qb4 Qxb4 35.cxb4 Rf7 36.Rxe5 Rf2 37.Re7+ Kb6
+- (3.03) Depth: 35/96 01:24:20 24059mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8
+- (3.11 ++) Depth: 36/96 01:30:52 26035mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 Kf7 17.Be4 Bxe4 18.Qxe4 Qe5 19.Qxe5 Nxe5
+- (3.19 ++) Depth: 36/96 01:35:43 27468mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7
+- (2.94 --) Depth: 36/96 01:46:04 30422mN
14.Nxe6 fxe6 15.Bd3 Qg7
+- (2.76 --) Depth: 36/96 01:54:05 32687mN
14.Nxe6 fxe6 15.Bd3 Qg7
+- (2.49 --) Depth: 36/96 01:59:42 34253mN
14.Nxe6 fxe6 15.Bd3 Be7 16.Bxe7 Qh5 17.Qb4 Bxg2 18.Rhe1 Nc6
+- (3.31 ++) Depth: 36/96 02:05:22 35940mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.Bxc8 Rxc8 31.a4 Kb8 32.Qb5+ Ka7 33.Rf1 Qc4 34.Qxc4 Rxc4 35.b3 Rh4 36.h3 Kb6 37.Kb2 Kc5 38.Kc3 Re4 39.Kd3 Rd4+ 40.Ke3 Rd7 41.c3
+- (3.43) Depth: 36/96 02:26:31 42241mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7
+- (3.51 ++) Depth: 37/96 02:43:42 47417mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7
+- (3.35 --) Depth: 37/96 03:01:07 52420mN
14.Nxe6 fxe6 15.Bd3 Qg7
+- (3.23 --) Depth: 37/96 03:15:12 56447mN
14.Nxe6 fxe6 15.Bd3 Qg7
+- (3.05 --) Depth: 37/96 03:22:22 58485mN
14.Nxe6 fxe6 15.Bd3 Qc5 16.Rhe1 Kf7 17.Be4 Bxe4 18.Nxe4 Qc8 19.Qh3 Qe8 20.Nd6+
+- (3.59 ++) Depth: 37/96 03:36:05 62657mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Raf8 24.Qe3 Kd8 25.Qb6+ Qc7 26.Qe6 Qc8 27.Qd6+ Qd7 28.Qxa6 Qxd5 29.Rd1 Qxd1+ 30.Kxd1 Ke7 31.b4 Rb8 32.Ke2 Rhd8 33.Qa7+ Ke6 34.Qxh7 Rxb4 35.Qxg6+ Ke7
+- (3.27) Depth: 37/96 04:05:52 71461mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7
+- (3.35 ++) Depth: 38/96 04:17:27 74935mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7
+- (3.19 --) Depth: 38/96 04:48:31 84438mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Bxg5+ 19.Qxg5 Nxd7
+- (3.43 ++) Depth: 38/96 04:54:17 86130mN
14.Nxe6 f6 15.Re1
+- (3.61 ++) Depth: 38/96 05:13:32 92193mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.Bxc8 Rxc8 31.a4 Qb6 32.Qe2 Qe6 33.Re1 Re8 34.Qb5 Qc6 35.Qa5+ Qb6 36.Rxe5
+- (3.31) Depth: 38/96 05:35:27 98687mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5
+- (3.39 ++) Depth: 39/96 05:51:17 103367mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5
+- (3.23 --) Depth: 39/96 07:02:11 124544mN
14.Nxe6 fxe6
+- (3.11 --) Depth: 39/96 08:06:29 142923mN
14.Nxe6 Qxe6 15.Bxb5 axb5 16.Nxb5 Na6 17.Rhe1
+- (3.47 ++) Depth: 39/96 08:33:23 150927mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.Bxc8 Rxc8 31.a4 Qb6
+- (3.55) Depth: 39/100 09:31:43 168857mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1
+- (3.63 ++) Depth: 40/100 10:55:37 196068mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7
+- (3.47 --) Depth: 40/100 12:17:59 221255mN
14.Nxe6 fxe6
+- (3.35 --) Depth: 40/100 13:05:27 235105mN
14.Nxe6 fxe6
+- (3.17 --) Depth: 40/100 14:54:45 269656mN
14.Nxe6 fxe6
+- (2.89 --) Depth: 40/100 16:06:51 290695mN
14.Nxe6 fxe6
+- (2.48 --) Depth: 40/100 17:34:40 316261mN

(Doc Holiday, Columbus, Ohio 24.01.2012)


I should add that I don't know for sure if this move has ever been tried before, so if someone finds it in a database please let me know
Top
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Cooking The Opening Book with Stockfish

Post by zullil »

acase wrote:It looks like Stockfish has found an improvement in a rarely played line in the B96 Najdorf Sicilian.

In the following positon the "book" moves are 14.Bxb5 or 14.Re1, however in a virtuoso tactical display Stockfish 2.2.2 uncorked the nice 14.Nxe6!!


[D]rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 14
Critter finds it at depth 20 in less than a minute. I'll let the search continue a bit.

Code: Select all

Critter v1.4 64-bit SSE4, by Richard Vida
setboard rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 14
info string Opening book: "book.cbk" - 57853 entries [native]
info string GTB Init OK (5 piece set)
info string Using 8 thread(s), 2048 MB hash
go infinite
 2/ 2  00:00       169       0  -0.30 Nf3 Bxf3 gxf3 Nc6
 2/ 2  00:00       284       0  -0.02 Kb1 Nc6
 2/ 3  00:00       524       0  +0.04 Bf4 Qf6
 3/ 4  00:00       804  804000  -0.14 Bf4 Qf6 Qxf6 Nxf6 Kb1
 3/ 4  00:00      1073 1073000  +0.08 Kb1 Nc6 Nf3
 4/ 4  00:00      1905 1905000  +0.06 Kb1 Nc6 Bf4 Qf6
 5/ 6  00:00      3208 1604000  +0.02 Kb1 Nc6 Nf3 Qf5 Bh6 Bxh6 Qxh6
 5/ 7  00:00      4812 1203000  +0.07 Nf3 Bxf3 gxf3 Nc6 Kb1 Qf5
 6/ 8  00:00      6869 1373800  +0.11 Nf3 Bxf3 gxf3 Nc6 Kb1 f6 Bf4
 6/ 8  00:00      8822 1260285  +0.12 Kb1 b4 Re1 Qc7 Bf4 e5
 7/ 8  00:00     12439 1243900  +0.13 Kb1 b4 Re1 Qc7 Ne4 Nc6 Qf2 Nxd4 Qxd4
 8/12  00:00     15994 1230307  +0.13 Kb1 b4 Re1 Qc7 Ne4 Nc6 Qf2 Nxd4 Qxd4
 9/16- 00:00     53055 1360384  +0.05 Kb1 b4 Re1 Qc7 Ne4 Nc6 Qf2 Nxd4 Qxd4
 9/17- 00:00     75834 1430830  -0.03 Kb1 b4 Re1 Qc7 Ne4 Nc6 Qf2 Nxd4 Qxd4
 9/18  00:00    121074 1441357  +0.05 Nf3 Bxf3 gxf3 Nc6 Ne4 Qf5 Bf6 Qxf3 Bg2 Qxg2 Bxh8 Nb4
10/18  00:00    132879 1509988  +0.09 Nf3 Bxf3 gxf3 h6 Bf4 Qf6 Qxf6 Nxf6 a4 bxa4 Nxa4 Nc6 Nb6
11/20+ 00:00    198168 1693743  +0.17 Nf3 Bxf3 gxf3 h6 Bf4 Qf6 Qxf6 Nxf6 a4 bxa4 Nxa4 Nbd7 Nc3 Bb4 Ne4 Nd5
11/20  00:00    233656 1770121  +0.12 Nf3 Bxf3 gxf3 Bg7 Bg2 Qc7 Ne4 O-O Kb1 Nc6 Nd6 Nc5 c3
12/22+ 00:00    386048 2193454  +0.20 Nf3 Bxf3 gxf3 Bg7 Bg2 Qc7 Ne4 O-O Kb1 Nc6 Nd6 Nc5 c3
12/22  00:00    428461 2243251  +0.17 Nf3 Bxf3 gxf3 Bg7 Kb1 Nc6 Bf4 Qf6 Qg3 Nc5 Bg5 Qe5 f4 Qf5 Qe3
13/36+ 00:00   2028216 4409165  +0.26 Re1 Qg7 Qf4 e5 Ne4 f5 Bf6 exf4 Bxg7 Bxg7 Nd6+ Kd8 Ne6+ Ke7 Nxb7 Be5
13/36+ 00:00   2546379 4777446  +0.35 Re1 Qg7 Qf4 e5 Ne4 f5 Qe3 fxe4 Ne6
13/40  00:00   4122275 5312210  +0.29 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Qc5 Nf3 Rc7 Kb1 Nc6 g4 Qb4 Qd3 f6
14/40  00:00   4895837 5403793  +0.29 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Qc5 Nf3 Rc7 Kb1 Nc6 g4 Qb4 Qd3 f6
15/40- 00:01  11893906 6545903  +0.20 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Qc5 Nf3 Rc7 Kb1 Nc6 g4 Qb4 Qd3 f6
15/40+ 00:01  12217223 6533274  +0.37 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Qc5 Nf3 Rc7 Kb1 Nc6 g4 Qb4 Qd3 f6 Be3 Qxg4
15/40- 00:02  16766542 6677236  +0.12 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Qc5 Nf3 Rc7 Kb1 Nc6 g4 Qb4 Qd3 f6 Be3 Qxg4
15/40  00:02  17533146 6503392  +0.12 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Be7 Bh6 Nf6 Qf3 Nd5 Kb1 Nd7 Bg7 Rg8 Bh6 Ne5 Qf2 Rd7 g3
16/40+ 00:02  18078109 6509942  +0.20 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Be7 Bh6 Nf6 Qf3 Nd5 Kb1 Nd7 Bg7 Rg8 Bh6 Ne5 Qf2 Rd7 g3
16/40+ 00:02  18460782 6518637  +0.29 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Rd1 Be7 Bh6 Nf6 Qf3 Nd5 Kb1 Nd7 Bg7 Rg8 Bh6 Ne5 Qf2 Rd7 g3
16/40  00:03  19639104 6518122  +0.23 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Bf4 Qb6 Be3 Qb7 Nc6 Ra8 Qd4 f6 Na5 Qc7 Qe4 Qxa5 Qxe6+ Kd8 Bf4 Kc8 Rd1 Qb6
17/40+ 00:04  31338112 7185992  +0.32 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Bf4 Qb6 Be3 Qb7 Nc6 Ra8 Qd4 f6 Na5 Qc7 Qe4 Qxa5 Qxe6+ Kd8 Bf4 Kc8 Rd1 Qb6
17/40+ 00:04  34925751 7262580  +0.41 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Bf4 Qb6 Be3 Qb7 Nc6 Ra8 Qd4 f6 Na5 Qc7 Qe4 Qxa5 Qxe6+ Kd8 Bf4 Kc8 Rd1 Qb6
17/40+ 00:05  38720783 7271508  +0.53 Re1 Qd6 Ne4 Bxe4 Qxe4 Ra7 Bf4 Qb6 Be3 Qb7 Nc6 Ra8 Qd4 f6 Na5 Qc7 Qe4 Qxa5 Qxe6+ Kd8 Bf4 Kc8 Rd1 Qb6
17/48  00:06  50217167 7376199  +0.59 Re1 Qd6 Bxb5 Be7 Nxe6 fxe6 Bxe7 Qxe7 Rxe6 Qxe6 Re1 Qxe1+ Qxe1+ Kd8 Qh4+ Kc7 Qf4+ Kd8 Nd5 Bxd5 Qg5+ Kc7 Qxd5 axb5 Qxa8 Rf8 Qa5+ Kc6 a4 bxa4 Qxa4+ Kb6 Qb4+ Kc7 Qa5+ Kc6 b4 Rf5 Qa7 Kb5 Qb7+ Kc4
18/48  00:09  72882083 7915082  +0.59 Re1 Qd6 Bxb5 Be7 Nxe6 fxe6 Bxe7 Qxe7 Rxe6 Qxe6 Re1 Qxe1+ Qxe1+ Kd8 Qh4+ Kc7 Qf4+ Kd8 Nd5 Bxd5 Qg5+ Kc7 Qxd5 axb5 Qxa8 Rf8 Qa5+ Kc6 a4 bxa4 Qxa4+ Kb6 Qb4+ Kc7 Qa5+ Kc6 b4 Rf5 Qa7 Kb5 Qb7+ Kc4
19/48  00:12 105602826 8298194  +0.59 Re1 Qd6 Bxb5 Be7 Nxe6 fxe6 Bxe7 Qxe7 Rxe6 Qxe6 Re1 Qxe1+ Qxe1+ Kd8 Qh4+ Kc7 Qf4+ Kd8 Nd5 Bxd5 Qg5+ Kc7 Qxd5 axb5 Qxa8 Rf8 Qa5+ Kc6 a4 bxa4 Qxa4+ Kb6 Qb4+ Kc7 Qa5+ Kc6 b4 Rf5 Qa7 Kb5 Qb7+ Kc4
20/48  00:26 246531150 9172569  +0.57 Re1 Qd6 Bxb5 Be7 Nxe6 fxe6 Bxe7 Qxe7 Rxe6 Qxe6 Re1 Qxe1+ Qxe1+ Kd8 Qh4+ Kc7 Qf4+ Kd8 Nd5 Bxd5 Qg5+ Kc7 Qxd5 axb5 Qxa8 Rf8 Qa5+ Kc6 a4 bxa4 Qxa4+ Kb6 Qb4+ Kc7 Qa5+ Kc6 Qe1 Kb7 Qe7 Rf1+ Kd2 Rf2+ Kd3
20/48+ 00:55 520866747 9461531  +0.68 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 axb5 Nxb5 Na6 Qc4 Ndc5 Nd6+ Bxd6 Rxd6 Bxg2 Red1 Nd7 Qe6+ Kf8 Rxd7
20/48+ 01:01 577298913 9428367  +0.76 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 axb5 Nxb5 Na6 Qc4 Ndc5 Nd6+ Bxd6 Rxd6 Bxg2 Red1 Nd7 Qe6+ Kf8 Rxd7
20/48+ 01:09 648210348 9350446  +0.89 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 axb5 Nxb5 Na6 Qc4 Ndc5 Nd6+ Bxd6 Rxd6 Bxg2 Red1 Nd7 Qe6+ Kf8 Rxd7
20/48+ 01:22 771641874 9312822  +1.08 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 axb5 Nxb5 Na6 Qc4 Ndc5 Nd6+ Bxd6 Rxd6 Bxg2 Red1 Nd7 Qe6+ Kf8 Rxd7
20/55+ 01:52 1048828240 9336860  +1.37 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 axb5 Nxb5 Na6 Qc4 Ndc5 Nd6+ Bxd6 Rxd6 Bxg2 Red1 Nd7 Qe6+ Kf8 Rxd7
20/64  02:34 1442432852 9319727  +1.78 Nxe6 fxe6 Bd3 Be7 Bxe7 Qh5 Qxh5 gxh5 Bg5 O-O Be4 Bxe4 Nxe4 e5 Bh6 Re8 Rhf1 Re6 Be3 Re7 Rd6 Rg7 g3 Rg4 Ng5 a5 Ne6 Rc4
21/64  02:56 1652736136 9346997  +1.73 Nxe6 fxe6 Bd3 Be7 Bxe7 Qh5 Qxh5 gxh5 Bg5 O-O Be4 Bxe4 Nxe4 a5 Bh6 Rf5 Rd3 h4 Rhd1 Re5 Re3 Rd5 Rxd5 exd5 Nd6 Nc6 Nxb5 Rb8 Nd6 Nce5 Bf4
22/64  03:50 2189289484 9507158  +1.76 Nxe6 fxe6 Bd3 Be7 Bxe7 Qh5 Qxh5 gxh5 Bg5 O-O Be4 Bxe4 Nxe4 Rf5 Rd3 Ne5 Rd8+ Rf8 Rxf8+ Kxf8 Rf1+ Kg8 Rf6 Nbd7 Rxe6 Rf8 Bf6 Ng4 Bd4 Nxh2 Rxa6 Ng4 Nd6 Rf1+ Kd2
23/74+ 07:21 4289865009 9707992  +1.87 Nxe6 fxe6 Bd3 Be7 Bxe7 Qh5 Qxh5 gxh5 Bg5 O-O Be4 Bxe4 Nxe4 Rf5 Rd3 Ne5 Rd8+ Rf8 Rxf8+ Kxf8 Rf1+ Kg8 Rf6 Nbc6 Rxe6 Rc8 h3 Nf7 Nf6+ Kh8 Be3 h4 c3 Kg7 Kc2
23/74+ 11:23 6753727522 9888066  +1.98 Nxe6 fxe6 Bd3 Be7 Bxe7 Qh5 Qxh5 gxh5 Bg5 O-O Be4 Bxe4 Nxe4 Rf5 Rd3 Ne5 Rd8+ Rf8 Rxf8+ Kxf8 Rf1+ Kg8 Rf6 Nbc6 Rxe6 Rc8 h3 Nf7 Nf6+ Kh8 Be3 h4 c3 Kg7 Kc2
23/74+ 15:34 9233995694 9883806  +2.14 Nxe6 fxe6 Bd3 Be7 Bxe7 Qh5 Qxh5 gxh5 Bg5 O-O Be4 Bxe4 Nxe4 Rf5 Rd3 Ne5 Rd8+ Rf8 Rxf8+ Kxf8 Rf1+ Kg8 Rf6 Nbc6 Rxe6 Rc8 h3 Nf7 Nf6+ Kh8 Be3 h4 c3 Kg7 Kc2
23/74  19:48 11839875084 9963574  +2.09 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb7 Qe7+ Qc7 Qh4 Qc6 Re1 Qxg2 Rxe5 Qf1+ Re1 Qd3+ Ka1 Rc7 Qb4+ Ka7 Qf4
24/74  23:15 14071220945 10080393  +2.09 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb7 Qe7+ Qc7 Qh4 Qc6 Re1 Qxg2 Rxe5 Qf1+ Re1 Qd3+ Ka1 Rc7 Qb4+ Ka7 Qf4
25/74  33:45 21043620376 10388376  +2.05 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qc4+ Qc6 Qh4 Qxg2 Re1 Re8 Qxh7+ Kb8 Qd7 Rh8 h4 Qb7 Qd6+ Qc7
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AdminX
Posts: 6342
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Re: Cooking The Opening Book with Stockfish

Post by AdminX »

Very nice find! :wink:
"Good decisions come from experience, and experience comes from bad decisions."
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Ted Summers
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zullil
Posts: 6442
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Full name: Louis Zulli

Re: Cooking The Opening Book with Stockfish

Post by zullil »

More from Critter. The evaluation is dropping a bit:

Code: Select all

26/74- 55:53 36771122966 10966260  +1.92 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qc4+ Qc6 Qh4 Qxg2 Re1 Re8 Qxh7+ Kb8 Qd7 Rh8 h4 Qb7 Qd6+ Qc7
26/74  79:49 51723421457 10799331  +2.09 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb7 Qe7+ Qc7 Qh4 Qc6 Re1 Qxg2 Rxe5 Qf1+ Re1 Qd3+ Ka1 Rc7 Qb4+ Ka7 Qf4
27/74- 111:06 74516509209 11177405  +1.96 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb7 Qe7+ Qc7 Qh4 Qc6 Re1 Qxg2 Rxe5 Qf1+ Re1 Qd3+ Ka1 Rc7 Qb4+ Ka7 Qf4
27/82  144:03 96732893938 11190840  +1.94 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb8 Rd1 Rd8 Rxd8+ Qxd8 Qb4+ Ka7 Qc5+ Kb7 Qb5+ Ka7 Qa4+ Kb8 Qb3+ Ka7 Qf7+ Kb6 Kc2 Qg5 g3 Qe3 Qf6+ Ka7 Qe7+ Kb6 Qd6+ Kb7 Qd7+ Kb6
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acase
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Full name: Andrew R Case

Re: Cooking The Opening Book with Stockfish

Post by acase »

I think we may have a novelty.I'll let it run for 24 hours, but eval is climbing back up with Stockfish:



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

Analysis by Stockfish 2.2.2 JA 64bit:

+- (2.48 --) Depth: 40/100 17:34:40 316261mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7 18.Rxd7 Nxd7 19.Bxd7+ Kd8 20.Be6 Bxg5+ 21.Qxg5+ Kc7 22.Nd5+ Bxd5 23.Bxd5 Rac8 24.Qe3 Qf6 25.Qa7+ Kd8 26.Bb7 Qf4+ 27.Kb1 Qd2 28.Rc1 Qd4 29.Qxa6 Kc7 30.Bxc8 Rxc8 31.a4 Rb8 32.b3 Rb6 33.Qa7+ Rb7 34.Qxd4 exd4 35.Rd1 Rb4 36.Kb2 Kc6 37.c3 dxc3+ 38.Kxc3
+- (3.55) Depth: 40/100 19:54:23 360299mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Bxb5 Be7
+- (3.63 ++) Depth: 41/100 21:19:03 387225mN

(Holiday, Columbus, Ohio 24.01.2012)
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rodolfoleoni
Posts: 263
Joined: Mon Nov 29, 2010 9:16 pm

Re: Cooking The Opening Book with Stockfish

Post by rodolfoleoni »

I think there could be a wider approach, thanks to top engines which use persistent hashes. One could group all B96 games into a pgn, and give them to Critter 1.4, persistent hashes enabled, first 25-30 moves only, for backward analysys from last move to the root ECO code position. I'm sure it'd find many novelties, and it'd store them into its session file. Providing a proper session file size is created, Critter would have a lot of knowledge and it would be almost unbeatable.

An inconenience: all novelties would be stored in the session file, and they wuold be unreadable by the user. The only remedy would be to use the session file without the help of a book in many bullet games against all top engines+their books. It could be interesting...

But, maybe, Richard Vida is already thinking at a solution like that. With the net facilities, and 500 testers (one per ECO code) Critter could achieve a deep knowlegde of the full range of openings. For a pratical use, session file names could be the ECO code names, so to have 500 different session file names. After opening, the right session file would be loaded.
Rodolfo (The Baron Team)
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Don
Posts: 5106
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Re: Cooking The Opening Book with Stockfish

Post by Don »

acase wrote:It looks like Stockfish has found an improvement in a rarely played line in the B96 Najdorf Sicilian.

In the following positon the "book" moves are 14.Bxb5 or 14.Re1, however in a virtuoso tactical display Stockfish 2.2.2 uncorked the nice 14.Nxe6!!


[D]rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 14
My current development version of Komodo finds it on an early core 2 duo desktop in about 4 1/2 minutes, not as fast as Critter or Stockfish of course:

info depth 20 time 107891 nodes 70459946 score cp 10 nps 653066 pv d1e1 e5d6
info depth 20 time 173460 nodes 105580908 score cp 15 nps 608675 pv d1e1 e5d6 c3e4 b7e4 h4e4 a8a7 g5f4 d6b6 d4b3 b8c6 g2g4 a7a8 c1b1 a8c8 c2c3 f8e7 h2h4 e8g8 g4g5 d7c5 b3c5 b6c5 f1g2 f8d8 h1f1 e7d6 f4e3
info depth 20 time 174264 nodes 105987376 score cp 15 nps 608200 pv d1e1 e5d6 c3e4 b7e4 h4e4 a8a7 g5f4 d6b6 d4b3 b8c6 g2g4 a7a8 c1b1 a8c8 c2c3 f8e7 h2h4 e8g8 g4g5 d7c5 b3c5 b6c5 f1g2 f8d8 h1f1 e7d6 f4e3
info depth 21 time 212422 nodes 125313072 score cp 12 nps 589925 pv d1e1 e5d6 c3e4 b7e4 h4e4 a8a7 g5f4 d6b6 f4e3 b6b7 e4g4 e6e5 d4e6 f8e7 e3a7 b7a7 e6g5 b8c6 c1b1 f7f5 g4g3 e7g5 g3g5 e8g8 g5d2 d7f6 d2d6 a7f2
info depth 21 time 260143 nodes 149872817 score cp 31 nps 576117 pv d4e6
info depth 21 time 293975 nodes 166575742 score cp 78 nps 566632 pv d4e6
info depth 21 time 326000 nodes 182151385 score cp 77 nps 558746 pv d4e6 f7e6
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royb
Posts: 537
Joined: Thu Mar 09, 2006 12:53 am

Re: Cooking The Opening Book with Stockfish

Post by royb »

Don wrote:
acase wrote:It looks like Stockfish has found an improvement in a rarely played line in the B96 Najdorf Sicilian.

In the following positon the "book" moves are 14.Bxb5 or 14.Re1, however in a virtuoso tactical display Stockfish 2.2.2 uncorked the nice 14.Nxe6!!


[D]rn2kb1r/1b1n1p1p/p3p1p1/1p2q1B1/3N3Q/2N5/PPP3PP/2KR1B1R w kq - 0 14
My current development version of Komodo finds it on an early core 2 duo desktop in about 4 1/2 minutes, not as fast as Critter or Stockfish of course:

info depth 20 time 107891 nodes 70459946 score cp 10 nps 653066 pv d1e1 e5d6
info depth 20 time 173460 nodes 105580908 score cp 15 nps 608675 pv d1e1 e5d6 c3e4 b7e4 h4e4 a8a7 g5f4 d6b6 d4b3 b8c6 g2g4 a7a8 c1b1 a8c8 c2c3 f8e7 h2h4 e8g8 g4g5 d7c5 b3c5 b6c5 f1g2 f8d8 h1f1 e7d6 f4e3
info depth 20 time 174264 nodes 105987376 score cp 15 nps 608200 pv d1e1 e5d6 c3e4 b7e4 h4e4 a8a7 g5f4 d6b6 d4b3 b8c6 g2g4 a7a8 c1b1 a8c8 c2c3 f8e7 h2h4 e8g8 g4g5 d7c5 b3c5 b6c5 f1g2 f8d8 h1f1 e7d6 f4e3
info depth 21 time 212422 nodes 125313072 score cp 12 nps 589925 pv d1e1 e5d6 c3e4 b7e4 h4e4 a8a7 g5f4 d6b6 f4e3 b6b7 e4g4 e6e5 d4e6 f8e7 e3a7 b7a7 e6g5 b8c6 c1b1 f7f5 g4g3 e7g5 g3g5 e8g8 g5d2 d7f6 d2d6 a7f2
info depth 21 time 260143 nodes 149872817 score cp 31 nps 576117 pv d4e6
info depth 21 time 293975 nodes 166575742 score cp 78 nps 566632 pv d4e6
info depth 21 time 326000 nodes 182151385 score cp 77 nps 558746 pv d4e6 f7e6
And here is Komodo 4 on my MacBook Pro with 2.3 GHz Core i7 processor (just under 2 minutes to spot Nxe6 as best move):

1 +8.33 14.Bf4 (0.00)
2 -0.17 14.Re1 Qd6 (0.00)
3 -0.13 14.Re1 Qc5 15.Bf6 (0.00)
4 -0.05 14.Re1 Qc5 15.Bf6 Nxf6 16.Qxf6 (0.00)
5 +0.11 14.Re1 (0.00)
5 +0.10 14.Re1 Qd6 (0.01)
5 -0.09 14.Re1 Qd6 15.Ne4 Bxe4 16.Rxe4 Nc6 17.Kb1 (0.01)
6 -0.11 14.Re1 Qd6 15.Ne4 Bxe4 16.Rxe4 Nc6 17.Bf4 (0.01)
6 +0.07 14.Kb1 (0.01)
6 +0.06 14.Kb1 Bg7 (0.01)
6 -0.12 14.Kb1 Bg7 15.Bf4 Qh5 16.Qe1 Nc6 17.Nf3 (0.01)
7 -0.07 14.Kb1 Bg7 15.a3 O-O 16.Nf3 Bxf3 17.gxf3 Qf5 (0.01)
8 +0.02 14.Kb1 Bg7 15.a4 b4 16.Bf4 Qc5 17.Nb3 Qf5 18.Bd3 (0.03)
8 +0.09 14.Re1 (0.03)
8 +0.32 14.Re1 Qc5 15.Nb3 Qb4 16.Ne4 Bxe4 17.Rxe4 Qd6 18.Rd4 (0.04)
9 +0.12 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Kb1 Be7 18.Bf4 e5 19.Bxe5 Nxe5 (0.05)
10 +0.35 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Be3 Nc5 18.Qf3 Bg7 19.Nb3 Nxb3+ 20.axb3 Rd7 21.Kb1 (0.10)
11 +0.35 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Be3 Nc5 18.Qf3 Bg7 19.Nb3 Nxb3+ 20.axb3 Rd7 21.Kb1 (0.17)
12 +0.19 14.Re1 Qd6 (0.26)
12 +0.20 14.Re1 (0.40)
12 +0.15 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Nf3 Bg7 18.Bf4 Qc6 19.Qe3 Rb7 20.Bd3 Qc5 21.Be4 (0.57)
13 +0.01 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Nf3 Bg7 18.Be3 Nc5 19.Qh4 Nc6 20.Rd1 Bxb2+ 21.Kxb2 Na4+ 22.Qxa4 Qxd1 (0.77)
14 +0.07 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Be3 Nc5 18.Qf3 Rd7 19.Rd1 Qd5 20.Qxd5 Rxd5 21.Be2 Rd7 22.Rhf1 Ne4 23.Bf4 (1.36)
15 +0.23 14.Re1 (2.34)
15 +0.22 14.Re1 Qd6 (2.56)
15 +0.24 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Nc6 Nxc6 20.Bxa7 Nc5 21.Bxc5 Bxc5 22.Kb1 O-O 23.c3 Rd8 24.Bd3 Qd7 25.Rd1 f5 26.Qf4 (3.31)
16 +0.08 14.Re1 Qd6 (4.50)
16 +0.09 14.Re1 (6.43)
16 +0.18 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qb6 18.Be3 Qb7 19.Qg4 e5 20.Nf3 Ra8 21.Bf4 f5 22.Qg3 e4 23.Be5 (7.18)
17 +0.34 14.Re1 (8.13)
17 +0.33 14.Re1 Qd6 (8.60)
17 +0.10 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qe7 18.Qe3 Bg7 19.c3 Rb7 20.Kb1 O-O 21.g4 e5 22.Bg2 Rc7 23.Bg5 Qc5 24.Nb3 Qxe3 25.Bxe3 (11.32)
18 +0.04 14.Re1 Qd6 15.Ne4 Bxe4 16.Qxe4 Ra7 17.Bf4 Qe7 18.Qe3 Bg7 19.c3 Rb7 20.g3 O-O 21.Bg2 Rb6 22.Kb1 e5 23.Bg5 Qd6 24.Nc2 Nc6 25.Rd1 (14.86)
19 +0.20 14.Re1 (21.10)
19 +0.38 14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.Kb1 O-O 21.c3 Qc5 22.g4 Rfd8 23.h4 Qd5 24.h5 Qxe4+ 25.Rxe4 Rd5 26.hxg6 hxg6 27.Kc2 Nd7 (34.42)
20 +0.40 14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Be2 O-O 20.Rhf1 Nf6 21.Qf3 Nd5 22.Kb1 Rd8 23.Rd1 Rad7 24.c4 Nb4 25.a3 Rxd4 26.axb4 f5 27.Rxd4 Rxd4 (52.10)
21 +0.29 14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Be2 O-O 20.Rhf1 Nf6 21.Qf3 Nd5 22.Kb1 Rd8 23.c3 e5 24.Bc4 Qc5 25.Bxd5 Qxd5 26.Qxd5 Rxd5 27.Nc2 Nc6 28.Rf6 Rc7 (80.90)
21 +0.58 14.Nxe6 (114.31)
21 +0.57 14.Nxe6 fxe6 (119.63)
21 +0.34 14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Nc6 17.Rhe1 Nc5 18.Kb1 Be7 19.Bxe7 Nxe7 20.Bxb7 Nxb7 21.Qe4 O-O 22.Qxb7 Nd5 23.Qxg7+ Kxg7 24.Ne4 Rad8 25.c3 Rfe8 26.Nc5 Rd6 27.g4 e5 28.g5 Re7 29.Rd2 Rc7 30.Ne4 (133.50)
22 +0.50 14.Nxe6 (154.23)
22 +0.49 14.Nxe6 fxe6 (163.85)
22 +0.48 14.Nxe6 fxe6 15.Bd3 Qg7 16.Be4 Nc6 17.Rhe1 Nc5 18.Kb1 Be7 19.Bxe7 Nxe7 20.Bxb7 Nxb7 21.Qe4 O-O 22.Qxb7 Nd5 23.Qxg7+ Kxg7 24.Ne4 Rad8 25.Nc5 Rfe8 26.Nxa6 e5 27.Nc5 Nf4 28.Rxd8 Rxd8 29.g3 Ng2 30.Rf1 Ne3 31.Ne6+ Kh6 (205.52)
23 +0.64 14.Nxe6 (256.85)
23 +1.11 14.Nxe6 (300.71)
23 +1.82 14.Nxe6 (410.52)
23 +1.81 14.Nxe6 fxe6 (425.36)
23 +1.60 14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 O-O 17.Rxe5 Nxe5 18.Bh6 Bxh6+ 19.Qxh6 b4 20.Ne4 Bd5 21.Qh4 Nbc6 22.b3 Rf7 23.Kb2 Raf8 24.Ng5 Nxd3+ 25.Rxd3 Re7 26.Ne4 Ref7 27.Rh3 h5 28.Rg3 Ne5 29.Nc5 Ng4 30.Nxa6 (544.96)
24 +1.76 14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 O-O 17.Rxe5 Nxe5 18.Bh6 Bxh6+ 19.Qxh6 b4 20.Ne4 Bd5 21.Qh4 Nbc6 22.b3 Rf7 23.Kb2 Raf8 24.Ng5 Nxd3+ 25.Rxd3 Re7 26.Ne4 Rf5 27.Rd2 Ref7 28.Nd6 Rf4 29.Qg3 Rf8 30.Qd3 Rf2 (646.56)
25 +1.71 14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 O-O 17.Rxe5 Nxe5 18.Bh6 Bxh6+ 19.Qxh6 b4 20.Ne4 Bd5 21.Qh4 Nbc6 22.b3 Rf7 23.Kb2 Raf8 24.Ng5 Nxd3+ 25.Rxd3 Re7 26.Ne4 Kg7 27.Nc5 a5 28.Rd2 Kg8 29.Qg5 Rd8 30.Rf2 e5 31.Rf6 (776.79)
26 +1.70 14.Nxe6 fxe6 15.Bd3 Bg7 16.Rhe1 O-O 17.Rxe5 Nxe5 18.Bh6 Bxh6+ 19.Qxh6 b4 20.Ne4 Bd5 21.Qh4 Nbc6 22.b3 Rf7 23.Kb2 Raf8 24.Ng5 Nxd3+ 25.Rxd3 Re7 26.Ne4 Kg7 27.Nc5 a5 28.Rd2 Kg8 29.Qe1 Rf5 30.Qe3 Rf1 31.Qe2 (1072.56)
27 +1.86 14.Nxe6 (1593.40)
27 +1.85 14.Nxe6 fxe6 (1725.34)
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Albert Silver
Posts: 3019
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Re: Cooking The Opening Book with Stockfish

Post by Albert Silver »

zullil wrote:More from Critter. The evaluation is dropping a bit:

Code: Select all

26/74- 55:53 36771122966 10966260  +1.92 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qc4+ Qc6 Qh4 Qxg2 Re1 Re8 Qxh7+ Kb8 Qd7 Rh8 h4 Qb7 Qd6+ Qc7
26/74  79:49 51723421457 10799331  +2.09 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb7 Qe7+ Qc7 Qh4 Qc6 Re1 Qxg2 Rxe5 Qf1+ Re1 Qd3+ Ka1 Rc7 Qb4+ Ka7 Qf4
27/74- 111:06 74516509209 11177405  +1.96 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb7 Qe7+ Qc7 Qh4 Qc6 Re1 Qxg2 Rxe5 Qf1+ Re1 Qd3+ Ka1 Rc7 Qb4+ Ka7 Qf4
27/82  144:03 96732893938 11190840  +1.94 Nxe6 fxe6 Bd3 Qg7 Rhe1 e5 Bxb5 Be7 Rxd7 Nxd7 Bxd7+ Kd8 Be6 Bxg5+ Qxg5+ Kc7 Nd5+ Bxd5 Bxd5 Rac8 Qe3 Qf6 Qa7+ Kd8 Bb7 Qf4+ Kb1 Qd2 Rc1 Qd4 Qxa6 Kc7 c3 Qb6 Bxc8 Rxc8 Qa3 Kb8 Rd1 Rd8 Rxd8+ Qxd8 Qb4+ Ka7 Qc5+ Kb7 Qb5+ Ka7 Qa4+ Kb8 Qb3+ Ka7 Qf7+ Kb6 Kc2 Qg5 g3 Qe3 Qf6+ Ka7 Qe7+ Kb6 Qd6+ Kb7 Qd7+ Kb6
Critter is a beast.

Analysis by Critter 1.4 64-bit SSE4 TB:

14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Be2 Rc7 20.Kb1 0-0 21.Rd1 Nf6 22.Qe5 Rfc8 23.c4 Nbd7 24.Qe3 e5 25.Rhf1 Nc5 26.Nb3 Nce4 27.Nd2 Nd6
= (0.21 ++) Depth: 16/50 00:00:07 36692kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.h4 0-0 21.h5 Rfd8 22.Nf3 g5 23.Kb1 Qc5 24.b4 Qd5 25.Ne5 f5
+/= (0.33) Depth: 16/50 00:00:07 39995kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.h4 0-0 21.h5 Rfd8 22.Nf3 g5 23.Kb1 Qc5 24.b4 Qd5 25.Ne5 f5
= (0.25 --) Depth: 17/50 00:00:10 67977kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.h4 0-0 21.h5 Rfd8 22.Nf3 g5 23.Kb1 Qc5 24.b4 Qd5 25.Ne5 f5
= (0.16 --) Depth: 17/50 00:00:12 87812kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.h4 0-0 21.c3 Rd6 22.h5 Nd7 23.hxg6 Qg5+ 24.Kb1 Qxg6 25.Qxg6+ hxg6 26.Rd1 Rd8 27.Kc2 Ne5 28.b3
= (0.17) Depth: 17/50 00:00:12 89606kN
14.Re1 Qd6 15.Bxb5 Be7 16.Ne4 Bxe4 17.Bxe7 Qxe7 18.Qxe4 Ra7 19.Bxd7+ Rxd7 20.h4 0-0 21.c3 Rd6 22.h5 Nd7 23.hxg6 Qg5+ 24.Kb1 Qxg6 25.Qxg6+ hxg6 26.Rd1 Rd8 27.Kc2 Ne5 28.b3
= (0.17) Depth: 18/50 00:00:13 94417kN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Qxc3 17.Rxe6+ Kf7 18.bxa3 Qxa3+ 19.Kb1 Kxe6 20.Qh3+ Kf7 21.Rf1+ Nf6 22.Bxf6 Qb4+ 23.Kc1 Qa3+ 24.Kd1 Qxa2 25.Bxh8+ Kg8 26.Bc3 Qd5 27.Qh6 Qh5+ 28.Qxh5 gxh5 29.Bf5
= (0.26 ++) Depth: 18/50 00:00:18 144mN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Qxc3 17.Rxe6+ Kf7 18.bxa3 Qxa3+ 19.Kb1 Kxe6 20.Qh3+ Kf7 21.Rf1+ Nf6 22.Bxf6 Qb4+ 23.Kc1 Qa3+ 24.Kd1 Qxa2 25.Bxh8+ Kg8 26.Bc3 Qd5 27.Qh6 Qh5+ 28.Qxh5 gxh5 29.Rf5 Nd7 30.Rxh5
+/= (0.35 ++) Depth: 18/50 00:00:19 154mN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Qxc3 17.Rxe6+ Kf7 18.bxa3 Qxa3+ 19.Kb1 Kxe6 20.Qh3+ Kf7 21.Rf1+ Nf6 22.Bxf6 Qb4+ 23.Kc1 Qa3+ 24.Kd1 Qxa2 25.Bxh8+ Kg8 26.Qh6 Qb1+ 27.Kd2
+/= (0.48 ++) Depth: 18/50 00:00:20 166mN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Qxc3 17.Rxe6+ Kf7 18.bxa3 Qxa3+ 19.Kb1 Kxe6 20.Qh3+ Kf7 21.Rf1+ Nf6 22.Bxf6 Qb4+ 23.Kc1 Qa3+ 24.Kd1 Qxa2 25.Bxh8+ Kg8 26.Qh6 Qb1+ 27.Kd2
+/= (0.67 ++) Depth: 18/50 00:00:23 192mN
14.Nxe6 fxe6 15.Bd3 Ba3 16.Rhe1 Qxc3 17.Rxe6+ Kf7 18.bxa3 Qxa3+ 19.Kb1 Bd5 20.Re7+ Kg8 21.Rg7+ Kxg7 22.Qd4+ Nf6 23.Bxf6+ Kf7 24.Qxd5+ Kxf6 25.Qd4+ Kg5 26.Qe3+ Kf6 27.Rf1+ Kg7 28.Qd4+ Kh6 29.Rf7 Qa4 30.Qg7+ Kh5 31.Qxh8 Qb4+ 32.Ka1
+/- (0.95 ++) Depth: 18/54 00:00:27 234mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Ra7 18.Qh3 Be7 19.Bh6 Qf7 20.Rf1 Qc4 21.b3 Qc8 22.Bg7 Rf8 23.Bxb7 Qxb7 24.Bxf8 Nxf8 25.Nd5 Nc6 26.Kb1 Bg5 27.Qg4 Bd8 28.h4 h5 29.Qh3 e4 30.Rde1
+/- (0.78) Depth: 18/55 00:00:33 284mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Ra7 18.Qh3 Be7 19.Bh6 Qf7 20.Rf1 Qc4 21.b3 Qc8 22.Bg7 Rf8 23.Bxb7 Qxb7 24.Bxf8 Nxf8 25.Nd5 Nc6 26.Kb1 Bg5 27.Qg4 Bd8 28.Kb2 h5 29.Qe4 Qg7 30.Nf6+ Bxf6 31.Qxc6+ Kf7 32.Rd6
+/- (0.86 ++) Depth: 19/55 00:00:35 301mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Ra7 18.Qh3 Be7 19.Bh6 Qf7 20.Rf1 Qc4 21.b3 Qc8 22.Bg7 Rf8 23.Bxb7 Qxb7 24.Bxf8 Nxf8 25.Nd5 Nc6 26.Kb1 Bg5 27.Qg4 Bd8 28.Kb2 h5 29.Qe4 Qg7 30.Nf6+ Bxf6 31.Qxc6+ Kf7 32.Rd6
+/- (0.95 ++) Depth: 19/55 00:00:37 320mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Ra7 18.Qh3 Be7 19.Bh6 Qf7 20.Rf1 Qc4 21.b3 Qc8 22.Bg7 Rf8 23.Bxb7 Qxb7 24.Bxf8 Nxf8 25.Nd5 Nc6 26.Kb2 Bg5 27.Qg4 Bd8 28.c3 Nd4 29.Qe4 Nc6 30.Nf6+ Bxf6 31.Rxf6
+/- (1.08 ++) Depth: 19/55 00:00:42 376mN
14.Nxe6 fxe6 15.Bd3 Qg7 16.Rhe1 e5 17.Be4 Ra7 18.Qh3 Be7 19.Bh6 Qf7 20.Rf1 Qc4 21.b3 Qc8 22.Bg7 Rf8 23.Bxb7 Qxb7 24.Bxf8 Nxf8 25.Nd5 Nc6 26.Kb2 Bg5 27.Qg4 Bd8 28.c3 Nd4 29.Qe4 Nc6 30.Nf6+ Bxf6 31.Rxf6
+/- (1.27 ++) Depth: 19/55 00:00:48 424mN
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Cooking The Opening Book with Stockfish

Post by zullil »

Albert Silver wrote: Critter is a beast.
True, but I think you were very lucky to find it so quickly. Can you do it again? :wink:
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