Stockfish won this one. I am not quite clear where Black went wrong. 19. Ng5 is interesting but not winning. Stockfish scores went up a lot after 20. Rh7+ but still Black may have a defense. However by 22. Rxe7! White is ahead for sure - this move may have been missed by Rybka.
--Jon
[Event "Rybka_Rising_From_The_Ashes"]
[Site "Norway"]
[Date "2010.05.28"]
[Round "1.2"]
[White "Stockfish 1.7.1 x64 4CPU"]
[Black "Deep Rybka 4 x64 4CPU"]
[Result "1-0"]
[ECO "D85"]
[Annotator "0.08;-0.07"]
[PlyCount "63"]
[EventDate "2010.05.27"]
[EventType "tourn"]
[Source "Thoresen"]
[TimeControl "40/1020:0/0:0/0"]
{Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz 3906 MHz W=23.5 plies; 7
825kN/s; Modern SGM v3.ctg B=16.4 plies; 663kN/s; Modern SGM v3.ctg} 1. d4 {
B 0} Nf6 {B 0} 2. Nf3 {B 0} g6 {B 0} 3. c4 {B 0} Bg7 {B 0} 4. Nc3 {B 0} d5 {B 0
} 5. cxd5 {B 0} Nxd5 {B 0} 6. e4 {B 0} Nxc3 {B 0} 7. bxc3 {B 0} c5 {B 0} 8. Rb1
{B 0} O-O {B 0} 9. Be3 {0.08/23 74} Qa5 {-0.07/18 31} 10. Qd2 {0.16/25 30} b6 {
-0.11/18 24} 11. h4 {0.08/24 56 (Rb5)} Rd8 {-0.18/18 45 (Bg4)} 12. Rc1 {0.04/
22 40} Nc6 {-0.18/18 56 (Bb7)} 13. d5 {0.12/25 28} e6 {0.00/17 16 (Qa4)} 14. h5
{0.84/23 25} exd5 {0.00/17 18} 15. hxg6 {0.16/23 28} hxg6 {0.00/18 32 (fxg6)}
16. Bh6 {0.24/23 24} Re8 {0.00/18 32} 17. Bxg7 {0.28/24 27} Rxe4+ {0.00/17 7}
18. Be2 {0.24/24 27} Kxg7 {0.00/17 8} 19. Ng5 {0.36/24 26 (Qxd5)} Re7 {0.16/16
37 (Rxe2+)} 20. Rh7+ {2.30/22 32} Kg8 {0.16/17 6} 21. Rxf7 {2.66/25 24} Qa4 {
1.38/16 52} 22. Rxe7 {2.98/25 23} Nxe7 {1.38/17 3} 23. Qe3 {2.82/27 29} Qd7 {
1.41/17 21} 24. Kd2 {2.98/26 31} Qd6 {1.55/17 23 (Nf5)} 25. Rh1 {3.71/25 22
(Qf3)} Qf6 {2.30/15 10} 26. Nh7 {3.71/25 28 (g4)} Qd6 {1.90/16 12} 27. g4 {4.
04/25 29 (Qf3)} c4 {2.38/17 45 (a6)} 28. g5 {7.95/23 21 (Qf3)} d4 {4.53/14 26
(Kf7)} 29. Qf3 {12.44/23 28} dxc3+ {4.53/13 7} 30. Ke1 {14.38/24 31} Qd2+ {10.
08/14 87} 31. Kf1 {5.49/6 0} Qc1+ {10.08/13 116} 32. Bd1 {15.79/26 64 (Kg2)}
1-0
interesting Stockfish-Rybka 4 game
Moderators: hgm, Rebel, chrisw
-
jdart
- Posts: 4367
- Joined: Fri Mar 10, 2006 5:23 am
- Location: http://www.arasanchess.org
-
Dr.Ex
- Posts: 194
- Joined: Sun Jul 08, 2007 4:10 am
Re: interesting Stockfish-Rybka 4 game
19...Re7? is a decisive mistake.
-
yanquis1972
- Posts: 1766
- Joined: Wed Jun 03, 2009 12:14 am
Re: interesting Stockfish-Rybka 4 game
from the position after 19...Re7 we can see that it takes rybka 4 single core until d17 to find 22.Rxe7, so given no SMP luck DR4 was at least 2 ply short of avoiding that move.
[D]r1b5/p3rpk1/1pn3p1/q1pp2N1/8/2P5/P2QBPP1/2R1K2R w K - 0 1
Analysis by Rybka 4 x64:
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 f6 25.Rd1
= (0.02 ++) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 f6 25.Rd1
= (0.17 ++) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 Qf5 25.Re1
= (0.19) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Bf5 22.Qd2 Re8+ 23.Kf1 f6 24.Qxd5 Qa3 25.Qd2 Rd8
= (-0.10) Depth: 7 00:00:00 17kN
20.Nh7 Rxe2+ 21.Qxe2 Bf5 22.Qd2 Re8+ 23.Kf1 f6 24.Qxd5 Qa3 25.Qd2 Rd8
= (-0.10) Depth: 8 00:00:00 18kN
20.Rh7+ Kg8[] 21.Rxf7 Qa3 22.Rf6 Ne5 23.Kf1 Kg7 24.Rd6 Bf5 25.Rxd5 Rae8 26.Bb5
= (0.02 ++) Depth: 9 00:00:00 65kN
20.Rh7+ Kg8[] 21.Rxf7 Qa3 22.Rf6 Ne5 23.Kf1 Kg7 24.Rd6 Bf5 25.Rxd5 Rae8 26.Bb5
= (0.17 ++) Depth: 9 00:00:00 71kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Ke2 Ne7 30.Bc4+ Kg7 31.Rh1 Nd5 32.Bxd5 Rxd5 33.c4 Re5+
= (0.10) Depth: 9 00:00:01 108kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Ke2 Ne7 30.Bc4+ Kg7 31.Rh1 Nd5 32.Bxd5 Rxd5 33.c4 Re5+
= (0.17) Depth: 10 00:00:01 160kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.Bc4 Rh8 30.Rd6+ Kf5 31.Rd7 Nc6
= (0.22) Depth: 11 00:00:02 257kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Kc2 Ne5 30.f4 Ng4 31.Re1 Kf6 32.a3 Kf5 33.g3
= (0.20) Depth: 12 00:00:03 397kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nc6 31.Rd5+ Kf4 32.g3+ Kf3 33.Rd3+ Kg4 34.Be6+ Kg5
= (0.20) Depth: 13 00:00:06 707kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nf5 31.Rd5+ Kf6 32.Rd7 Re8+ 33.Kd2 Re7 34.Rxe7 Nxe7 35.Ke3
= (0.21) Depth: 14 00:00:11 1355kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Nf5 30.Ke2 Ke5 31.Rd7 Ke6 32.Rc7 a6 33.Bd7+ Kd6 34.Rb7 Ne7 35.Kd3
= (0.20) Depth: 15 00:00:20 2566kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nf5 31.Rd7 a5 32.Kd2 Rh8 33.g4 Nh6 34.Be2 Kf4
= (0.23) Depth: 16 00:00:41 5168kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7 Nxe7 23.Qe3 Nf5 24.Qe5 Qd7 25.Kd2
+/= (0.35 ++) Depth: 17 00:01:50 13298kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7 Nxe7 23.Qe3
+/= (0.50 ++) Depth: 17 00:02:16 15778kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7[] Nxe7 23.Qe3
+/- (0.90 ++) Depth: 17 00:03:36 24101kN, tb=1
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7[] Nxe7 23.Qe3
+- (1.70 ++) Depth: 17 00:08:26 55021kN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 17 00:17:21 113mN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 18 00:18:41 123mN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 19 00:21:32 143mN, tb=6
[D]r1b5/p3rpk1/1pn3p1/q1pp2N1/8/2P5/P2QBPP1/2R1K2R w K - 0 1
Analysis by Rybka 4 x64:
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 f6 25.Rd1
= (0.02 ++) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 f6 25.Rd1
= (0.17 ++) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 Qf5 25.Re1
= (0.19) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Bf5 22.Qd2 Re8+ 23.Kf1 f6 24.Qxd5 Qa3 25.Qd2 Rd8
= (-0.10) Depth: 7 00:00:00 17kN
20.Nh7 Rxe2+ 21.Qxe2 Bf5 22.Qd2 Re8+ 23.Kf1 f6 24.Qxd5 Qa3 25.Qd2 Rd8
= (-0.10) Depth: 8 00:00:00 18kN
20.Rh7+ Kg8[] 21.Rxf7 Qa3 22.Rf6 Ne5 23.Kf1 Kg7 24.Rd6 Bf5 25.Rxd5 Rae8 26.Bb5
= (0.02 ++) Depth: 9 00:00:00 65kN
20.Rh7+ Kg8[] 21.Rxf7 Qa3 22.Rf6 Ne5 23.Kf1 Kg7 24.Rd6 Bf5 25.Rxd5 Rae8 26.Bb5
= (0.17 ++) Depth: 9 00:00:00 71kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Ke2 Ne7 30.Bc4+ Kg7 31.Rh1 Nd5 32.Bxd5 Rxd5 33.c4 Re5+
= (0.10) Depth: 9 00:00:01 108kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Ke2 Ne7 30.Bc4+ Kg7 31.Rh1 Nd5 32.Bxd5 Rxd5 33.c4 Re5+
= (0.17) Depth: 10 00:00:01 160kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.Bc4 Rh8 30.Rd6+ Kf5 31.Rd7 Nc6
= (0.22) Depth: 11 00:00:02 257kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Kc2 Ne5 30.f4 Ng4 31.Re1 Kf6 32.a3 Kf5 33.g3
= (0.20) Depth: 12 00:00:03 397kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nc6 31.Rd5+ Kf4 32.g3+ Kf3 33.Rd3+ Kg4 34.Be6+ Kg5
= (0.20) Depth: 13 00:00:06 707kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nf5 31.Rd5+ Kf6 32.Rd7 Re8+ 33.Kd2 Re7 34.Rxe7 Nxe7 35.Ke3
= (0.21) Depth: 14 00:00:11 1355kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Nf5 30.Ke2 Ke5 31.Rd7 Ke6 32.Rc7 a6 33.Bd7+ Kd6 34.Rb7 Ne7 35.Kd3
= (0.20) Depth: 15 00:00:20 2566kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nf5 31.Rd7 a5 32.Kd2 Rh8 33.g4 Nh6 34.Be2 Kf4
= (0.23) Depth: 16 00:00:41 5168kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7 Nxe7 23.Qe3 Nf5 24.Qe5 Qd7 25.Kd2
+/= (0.35 ++) Depth: 17 00:01:50 13298kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7 Nxe7 23.Qe3
+/= (0.50 ++) Depth: 17 00:02:16 15778kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7[] Nxe7 23.Qe3
+/- (0.90 ++) Depth: 17 00:03:36 24101kN, tb=1
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7[] Nxe7 23.Qe3
+- (1.70 ++) Depth: 17 00:08:26 55021kN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 17 00:17:21 113mN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 18 00:18:41 123mN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 19 00:21:32 143mN, tb=6
-
Robert Flesher
- Posts: 1280
- Joined: Tue Aug 18, 2009 3:06 am
Re: interesting Stockfish-Rybka 4 game
jdart wrote:Stockfish won this one. I am not quite clear where Black went wrong. 19. Ng5 is interesting but not winning. Stockfish scores went up a lot after 20. Rh7+ but still Black may have a defense. However by 22. Rxe7! White is ahead for sure - this move may have been missed by Rybka.
--Jon
[Event "Rybka_Rising_From_The_Ashes"]
[Site "Norway"]
[Date "2010.05.28"]
[Round "1.2"]
[White "Stockfish 1.7.1 x64 4CPU"]
[Black "Deep Rybka 4 x64 4CPU"]
[Result "1-0"]
[ECO "D85"]
[Annotator "0.08;-0.07"]
[PlyCount "63"]
[EventDate "2010.05.27"]
[EventType "tourn"]
[Source "Thoresen"]
[TimeControl "40/1020:0/0:0/0"]
{Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz 3906 MHz W=23.5 plies; 7
825kN/s; Modern SGM v3.ctg B=16.4 plies; 663kN/s; Modern SGM v3.ctg} 1. d4 {
B 0} Nf6 {B 0} 2. Nf3 {B 0} g6 {B 0} 3. c4 {B 0} Bg7 {B 0} 4. Nc3 {B 0} d5 {B 0
} 5. cxd5 {B 0} Nxd5 {B 0} 6. e4 {B 0} Nxc3 {B 0} 7. bxc3 {B 0} c5 {B 0} 8. Rb1
{B 0} O-O {B 0} 9. Be3 {0.08/23 74} Qa5 {-0.07/18 31} 10. Qd2 {0.16/25 30} b6 {
-0.11/18 24} 11. h4 {0.08/24 56 (Rb5)} Rd8 {-0.18/18 45 (Bg4)} 12. Rc1 {0.04/
22 40} Nc6 {-0.18/18 56 (Bb7)} 13. d5 {0.12/25 28} e6 {0.00/17 16 (Qa4)} 14. h5
{0.84/23 25} exd5 {0.00/17 18} 15. hxg6 {0.16/23 28} hxg6 {0.00/18 32 (fxg6)}
16. Bh6 {0.24/23 24} Re8 {0.00/18 32} 17. Bxg7 {0.28/24 27} Rxe4+ {0.00/17 7}
18. Be2 {0.24/24 27} Kxg7 {0.00/17 8} 19. Ng5 {0.36/24 26 (Qxd5)} Re7 {0.16/16
37 (Rxe2+)} 20. Rh7+ {2.30/22 32} Kg8 {0.16/17 6} 21. Rxf7 {2.66/25 24} Qa4 {
1.38/16 52} 22. Rxe7 {2.98/25 23} Nxe7 {1.38/17 3} 23. Qe3 {2.82/27 29} Qd7 {
1.41/17 21} 24. Kd2 {2.98/26 31} Qd6 {1.55/17 23 (Nf5)} 25. Rh1 {3.71/25 22
(Qf3)} Qf6 {2.30/15 10} 26. Nh7 {3.71/25 28 (g4)} Qd6 {1.90/16 12} 27. g4 {4.
04/25 29 (Qf3)} c4 {2.38/17 45 (a6)} 28. g5 {7.95/23 21 (Qf3)} d4 {4.53/14 26
(Kf7)} 29. Qf3 {12.44/23 28} dxc3+ {4.53/13 7} 30. Ke1 {14.38/24 31} Qd2+ {10.
08/14 87} 31. Kf1 {5.49/6 0} Qc1+ {10.08/13 116} 32. Bd1 {15.79/26 64 (Kg2)}
1-0
It looks to me like white had a ready made attack. I know I would not liked to have played black in that game. However, that being said, it does look like Rybka was unable to find a defense. I thought Rxe2 may have been better, but it appears to suffer the same fate. Nice game by Stockfish !
-
Robert Flesher
- Posts: 1280
- Joined: Tue Aug 18, 2009 3:06 am
Re: interesting Stockfish-Rybka 4 game
yanquis1972 wrote:from the position after 19...Re7 we can see that it takes rybka 4 single core until d17 to find 22.Rxe7, so given no SMP luck DR4 was at least 2 ply short of avoiding that move.
[D]r1b5/p3rpk1/1pn3p1/q1pp2N1/8/2P5/P2QBPP1/2R1K2R w K - 0 1
Analysis by Rybka 4 x64:
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 f6 25.Rd1
= (0.02 ++) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 f6 25.Rd1
= (0.17 ++) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Qa4 22.Qd2 Qe4+ 23.Kf1 Ba6+ 24.Kg1 Qf5 25.Re1
= (0.19) Depth: 6 00:00:00 3kN
20.Nh7 Rxe2+ 21.Qxe2 Bf5 22.Qd2 Re8+ 23.Kf1 f6 24.Qxd5 Qa3 25.Qd2 Rd8
= (-0.10) Depth: 7 00:00:00 17kN
20.Nh7 Rxe2+ 21.Qxe2 Bf5 22.Qd2 Re8+ 23.Kf1 f6 24.Qxd5 Qa3 25.Qd2 Rd8
= (-0.10) Depth: 8 00:00:00 18kN
20.Rh7+ Kg8[] 21.Rxf7 Qa3 22.Rf6 Ne5 23.Kf1 Kg7 24.Rd6 Bf5 25.Rxd5 Rae8 26.Bb5
= (0.02 ++) Depth: 9 00:00:00 65kN
20.Rh7+ Kg8[] 21.Rxf7 Qa3 22.Rf6 Ne5 23.Kf1 Kg7 24.Rd6 Bf5 25.Rxd5 Rae8 26.Bb5
= (0.17 ++) Depth: 9 00:00:00 71kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Ke2 Ne7 30.Bc4+ Kg7 31.Rh1 Nd5 32.Bxd5 Rxd5 33.c4 Re5+
= (0.10) Depth: 9 00:00:01 108kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Ke2 Ne7 30.Bc4+ Kg7 31.Rh1 Nd5 32.Bxd5 Rxd5 33.c4 Re5+
= (0.17) Depth: 10 00:00:01 160kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.Bc4 Rh8 30.Rd6+ Kf5 31.Rd7 Nc6
= (0.22) Depth: 11 00:00:02 257kN
20.Rh7+ Kg8 21.Rxf7 Qa4 22.Qxd5 Be6 23.Nxe6 Rxf7 24.Ng5 Qf4 25.Qxf7+ Qxf7 26.Nxf7 Kxf7 27.Bb5 Re8+ 28.Kd2 Rd8+ 29.Kc2 Ne5 30.f4 Ng4 31.Re1 Kf6 32.a3 Kf5 33.g3
= (0.20) Depth: 12 00:00:03 397kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nc6 31.Rd5+ Kf4 32.g3+ Kf3 33.Rd3+ Kg4 34.Be6+ Kg5
= (0.20) Depth: 13 00:00:06 707kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nf5 31.Rd5+ Kf6 32.Rd7 Re8+ 33.Kd2 Re7 34.Rxe7 Nxe7 35.Ke3
= (0.21) Depth: 14 00:00:11 1355kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Nf5 30.Ke2 Ke5 31.Rd7 Ke6 32.Rc7 a6 33.Bd7+ Kd6 34.Rb7 Ne7 35.Kd3
= (0.20) Depth: 15 00:00:20 2566kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Qxd5 Be6[] 23.Nxe6 Rxf7[] 24.Ng5 Qf4[] 25.Qxf7+[] Qxf7 26.Nxf7 Kxf7 27.Bb5 Ne7 28.Rd1 Kf6 29.a4 Ke5 30.Bc4 Nf5 31.Rd7 a5 32.Kd2 Rh8 33.g4 Nh6 34.Be2 Kf4
= (0.23) Depth: 16 00:00:41 5168kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7 Nxe7 23.Qe3 Nf5 24.Qe5 Qd7 25.Kd2
+/= (0.35 ++) Depth: 17 00:01:50 13298kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7 Nxe7 23.Qe3
+/= (0.50 ++) Depth: 17 00:02:16 15778kN
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7[] Nxe7 23.Qe3
+/- (0.90 ++) Depth: 17 00:03:36 24101kN, tb=1
20.Rh7+ Kg8[] 21.Rxf7[] Qa4 22.Rxe7[] Nxe7 23.Qe3
+- (1.70 ++) Depth: 17 00:08:26 55021kN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 17 00:17:21 113mN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 18 00:18:41 123mN, tb=6
20.Rh7+ Kg8 21.Rxf7[] Qa3 22.Rxe7[] Nxe7 23.Qf4 Bf5 24.g4 Rf8 25.gxf5 Nxf5 26.Qd2[] Rd8 27.Kf1 Qa4 28.Re1 Qh4 29.Kg1 Rd7 30.Kg2 Qa4 31.Bd1 Qc4 32.Re8+ Kg7 33.Qe1
+- (2.12) Depth: 19 00:21:32 143mN, tb=6
It seems Rybka 4.0 SSE42 x64 does see a different main PV than Rybka x64. Perhaps this is because my hardware is faster. I reached 19 ply search in 2min compared to your 20 min. However, I'd like to here from Vas or the beta testers if there is any other differences between the two engines other than SSE42 being optimized for Core I7.
New game, Blitz:5' Microsoft
r1b5/p3rpk1/1pn3p1/q1pp2N1/8/2P5/P2QBPP1/2R1K2R w K - 0 1
Analysis by Deep Rybka 4 SSE42 x64:
1.Qxd5 Nd4 2.Qxa8 Nxe2 3.Rh7+
= (0.00) Depth: 1 00:00:00
1.Qxd5 Ba6
³ (-0.49) Depth: 1 00:00:00
1.Qxd5 Ba6 2.Ne4 Rae8 3.Bf3 Bb5
µ (-0.77) Depth: 2 00:00:00
1.Rh7+ Kg8 2.Qxd5 Qb5
³ (-0.65) Depth: 3 00:00:00
1.Rh7+ Kg8 2.Qxd5 Qb5
³ (-0.50) Depth: 3 00:00:00
1.Rh7+ Kg8 2.Rxf7 Ba6 3.Rxe7 Nxe7 4.Kf1 Re8
³ (-0.38) Depth: 3 00:00:00
1.Rh7+ Kg8 2.Rxf7 Ba6 3.Rxe7 Nxe7 4.Qe3
³ (-0.38) Depth: 4 00:00:00
1.Rh7+ Kg8 2.Rxf7 c4 3.Rf6 Ne5 4.Kf1
³ (-0.26) Depth: 5 00:00:00
1.Rh7+ Kg8 2.Rxf7 c4 3.Rf6 Ne5 4.Kf1
³ (-0.29) Depth: 5 00:00:00
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Rf6 Ne5 4.Kf1 Kg7 5.Rd6 Ba6 6.Ne6+
= (-0.17) Depth: 6 00:00:00 13kN
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Rf6 Ne5 4.Kf1 Kg7 5.Rd6 Ba6 6.Ne6+
= (-0.20) Depth: 6 00:00:00 13kN
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Rf6 Ne5 4.Kf1 Bf5 5.Rd6 Rae8 6.Rxd5 c4 7.Kg1 Nd3
³ (-0.34) Depth: 7 00:00:00 44kN
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Qf4 Bf5 4.Rxe7 Nxe7 5.g4
= (-0.22) Depth: 8 00:00:00 59kN
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Qf4 Bf5 4.Rxe7 Nxe7 5.g4
= (-0.07) Depth: 8 00:00:00 69kN
1.Rh7+ Kg8 2.Rxf7 Qa4 3.Qxd5 Be6 4.Nxe6 Rxf7 5.Ng5 Qf4 6.Qxf7+ Qxf7 7.Nxf7 Kxf7 8.Bb5 Ne5 9.f4 Ng4 10.Rd1 Nf6 11.Ke2 Rh8 12.Bc4+
= (0.14) Depth: 8 00:00:00 100kN
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Qf4 Rxe2+ 4.Kxe2 Bf5 5.Kf1 Ne5 6.Rg7+ Kxg7 7.Qxe5+ Kh6 8.Nf7+ Kh7 9.Ng5+ Kh6 10.Nf7+ Kh7 11.Ng5+ Kh6 12.Nf7+ Kh7 13.Ng5+ Kh6 14.Nf7+ Kh7 15.Ng5+ Kh6 16.Nf7+
= (0.00) Depth: 9 00:00:00 153kN
1.Rh7+ Kg8 2.Rxf7 Qa3 3.Qf4 Rxe2+ 4.Kxe2 Bf5 5.Qc7 Re8+ 6.Kf3 Ne5+ 7.Kg3
= (0.12) Depth: 10 00:00:00 262kN
1.Rh7+ Kg8 2.Rxf7 Qa4 3.Qxd5 Be6 4.Nxe6 Rxf7 5.Ng5 Qf4 6.Qxf7+ Qxf7 7.Nxf7 Kxf7 8.Bb5 Re8+ 9.Kd2 Rd8+ 10.Kc2 Ne7 11.Rh1 Ke6 12.Rh7 a5 13.a3 Nf5 14.Kb3
= (0.22) Depth: 10 00:00:00 305kN
1.Rh7+ Kg8 2.Rxf7 Qa4 3.Qxd5 Be6 4.Nxe6 Rxf7 5.Ng5 Qf4 6.Qxf7+ Qxf7 7.Nxf7 Kxf7 8.Bb5 Re8+ 9.Kd2 Rd8+ 10.Kc2 Ne7 11.Rh1 Kg7 12.a4 Kf6 13.Ba6 Nc6 14.Rh7 Ke5
= (0.20) Depth: 11 00:00:01 400kN
1.Rh7+ Kg8 2.Rxf7 Qa4 3.Qxd5 Be6 4.Nxe6 Rxf7 5.Ng5 Qf4 6.Qxf7+ Qxf7 7.Nxf7 Kxf7 8.Bb5 Re8+ 9.Kd2 Rd8+ 10.Kc2 Ne7 11.Rh1 Kg7 12.a4 Kf6 13.Ba6 Nc6 14.Rh7 Ke5
= (0.18) Depth: 12 00:00:02 578kN
1.Rh7+ Kg8 2.Rxf7 Qa4 3.Qxd5 Be6 4.Nxe6 Rxf7 5.Ng5 Qf4 6.Qxf7+ Qxf7 7.Nxf7 Kxf7 8.Bb5 Re8+ 9.Kd2 Rd8+ 10.Kc2 Ne7 11.Rh1 Kg7 12.a4 Kf6 13.Ba6 Kg7 14.Bc4 Nf5 15.Re1 Kf6 16.Re6+
= (0.19) Depth: 13 00:00:02 895kN
1.Rh7+ Kg8 2.Rxf7 Qa4 3.Qxd5 Be6 4.Nxe6 Rxf7 5.Ng5 Qf4 6.Qxf7+ Qxf7 7.Nxf7 Kxf7 8.Bb5 Re8+ 9.Kd2 Rd8+ 10.Kc2 Ne7 11.Rh1 Kg7 12.a4 Nf5 13.Bc4 Nd6 14.Rd1 Kf6 15.Kb3 Kf5 16.Bd3+
= (0.14) Depth: 14 00:00:03 1453kN
1.Nh7 Rxe2+ 2.Qxe2 Bf5 3.Qe3 f6 4.g4 Bxg4 5.Qh6+ Kf7 6.Qh4 Re8+ 7.Kf1 Be2+ 8.Kg1 Re6 9.Qh6 Re8 10.Qf4 f5 11.Qd6 Bh5 12.Qxc6 Qa3 13.Qd7+ Re7 14.Ng5+ Kf6 15.Qd6+
² (0.31) Depth: 14 00:00:05 2272kN
1.Nh7 Rxe2+ 2.Qxe2 Bf5 3.Qe3
² (0.46) Depth: 14 00:00:06 2409kN
1.Nh7 Rxe2+ 2.Qxe2 Bf5 3.Qe3
± (0.86) Depth: 14 00:00:08 3043kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Bf3 Qxa2 10.Rd1 a5 11.Rxd5 Ka6 12.0-0 Rf7 13.Rd8 Rxf3 14.Qe4 Rb8 15.Qxf3 Bb7
+- (1.46) Depth: 14 00:00:19 6962kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Bf3 Ka6 10.Bxd5 Qa3 11.Rd1 Rxd5 12.Qxd5 Qxc3+ 13.Kf1 Bb7 14.Qb3 Qxb3 15.axb3 Kb5 16.Rd7
+- (1.58) Depth: 15 00:00:28 10204kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Bf3 Ka6 10.Bxd5 Qa3 11.Rd1 Rxd5 12.Qxd5 Qxc3+ 13.Kf1 Bb7 14.Qb3 Qxb3 15.axb3 Be4 16.Rd2
+- (1.58) Depth: 15 00:00:30 11358kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Bf3 Ka6 10.Bxd5 Qa3 11.Rd1 Rxd5 12.Qxd5 Qxc3+ 13.Kf1 Bb7 14.Qb3 Qxb3 15.axb3 Be4 16.Rd2
+- (1.55) Depth: 16 00:00:34 12751kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Bf3 Ka6 10.Bxd5 Qa3 11.Rd1 Rxd5 12.Qxd5 Qxc3+ 13.Kf1 Qc2 14.Qb3 Bf5 15.Qxc2 Bxc2 16.Rd7
+- (1.54) Depth: 17 00:00:49 18773kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Bf3 Ka6 10.Bxd5 Qa3 11.Rd1 Rxd5 12.Qxd5 Qxc3+ 13.Kf1 Bb7 14.Qb3 Qxb3 15.axb3 Be4 16.Rd2
+- (1.55) Depth: 18 00:01:17 30107kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Rd1 Qa3 10.Rxd5 Qxa2 11.Rxd7+ Bxd7 12.Qe4+ Kc7 13.Qf4+ Kb7 14.Qf3+ Kc7 15.Qxa8 Qa1+ 16.Kd2
+- (1.67) Depth: 19 00:02:49 63871kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Rd7 7.Ne5 Nxe5 8.Qxe5+ Kb7 9.Rd1 c4 10.Bg4 Rf7 11.Rxd5 Qa3 12.Qe4 Qxc3+ 13.Rd2+ Ka6 14.Be2 Rb7 15.Bxc4+
+- (1.82) Depth: 19 00:04:15 90569kN
1.Nh7 f6 2.Qh6+ Kf7 3.Qf8+ Ke6 4.Qxf6+ Kd7 5.Nf8+ Kc7 6.Nxg6 Re4 7.Nf4 Bd7 8.Nxd5+ Kb7 9.Qd6 Rxe2+ 10.Kxe2 Qb5+ 11.Ke1 Re8+ 12.Ne3 Bg4 13.Rh7+ Ka6 14.c4 Qb2 15.Qd2 Qd4 16.Rc7
+- (1.97) Depth: 19 00:07:40 167251kN
(, Microsoft 03.06.2010)
-
M ANSARI
- Posts: 3707
- Joined: Thu Mar 16, 2006 7:10 pm
Re: interesting Stockfish-Rybka 4 game
The difference is very small performance increase by using the SSE42 instructions. You can see exactly the difference by using one thread and testing both SSE42 and the default on a certain position. Since single thread search is deterministic you will get an accurate picture of how much performance to expect.