Cluster move

[kgburcham]

Just in case anyone missed this move and is interested in running this through their setup----here it is.
Rybka 3 takes 23 minutes with my hardware, Q6600.

Zappa is just a little faster than Rybka 3, but both will play this move if given enough time.

I got the Deep Blue guys to run this through their system and it took Deep Blue about 2.5 minutes to play 19.Nd5.


[Event "Olympiad"]
[Site "Pamplona"]
[Date "2009.05.13"]
[Round "6"]
[White "Rybka"]
[Black "Shredder"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Qe2 Ng5
6. Nxg5 Qxg5 7. d4 Qe7 8. dxe5 Nd4 9. Qd3 Qxe5 10. Nc3 Bc5
11. Qd1 Ne6 12. Re1 Qd4 13. Qf3 O-O 14. Re4 Qd6 15. Rh4 Qe5
16. Bd2 f5 17. Re1 Qf6 18. Qh3 Qg6 19. Nd5 c6 (19... h6
20. Bxh6 gxh6 21. Rxh6 Qg7 22. Qh5 c6 23. Rg6 cxd5
24. Rxg7+ Kxg7 25. Bd3 a5 26. Bxf5) 20. Rxe6 Qxe6
(20... dxe6 21. Nf4) 21. Nf4 Qxa2 22. Rxh7 cxb5 23. g3 Rf6
24. Bc3 Kf7 25. Qh4 Qa1+ 26. Kg2 Qa6 27. Bxf6 Qxf6 28. Qh5+
1-0




[d] r1b2rk1/pppp2pp/4n1q1/1Bb2p2/7R/2N4Q/PPPB1PPP/4R1K1 w - -



Zappa Mexico II
Hash 1024

19/57 20:51 +1.16 19.Nd5 c6 20.Rxe6 Qxe6 21.Nf4 Qxa2 22.Bf1 h6 23.Qc3 d5 24.Qxc5 Qxb2 25.Bc3 Qxc2 26.Qd4 Rf7 27.Rxh6 Qxc3 28.Qxc3 gxh6 29.Qe5 Bd7 (2.600.701.898) 2078
19/57 21:46 +1.16 19.Nd5 c6 20.Rxe6 Qxe6 21.Nf4 Qxa2 22.Bf1 h6 23.Qc3 d5 24.Qxc5 Qxb2 25.Bc3 Qxc2 26.Qd4 Rf7 27.Rxh6 Qxc3 28.Qxc3 gxh6 29.Qe5 Bd7 (2.718.501.926) 2079



Rybka 3
hash 1024

20.18 23:04 +0.31++ 19.Nd5 (287.358.892) 212
20.01 25:50 +0.51++ 19.Nd5 (313.364.232) 206
20.01 33:19 +0.91++ 19.Nd5 (402.357.831) 206
20.01 89:45 +1.71++ 19.Nd5 (1.149.577.445) 218
20.01 131:20 +1.85 19.Nd5 h6 20.Bxh6 (1.671.450.622) 217
21.01 187:29 +2.05++ 19.Nd5 (2.343.484.959) 213
21.01 243:34 +2.12 19.Nd5 Bd6 20.Bf4 Bc5 (2.977.416.016) 208
22.01 352:17 +2.16 19.Nd5 h6 20.Bxh6 gxh6 21.Rxh6 Qg7 22.Qh5 c6 23.Rg6 cxd5 24.Rxg7+ Kxg7 25.Bd3 Rf6 26.Bxf5 Kf8 27.Qh8+ Ke7 28.Qg7+ Rf7 29.Qe5 b6 30.Qxd5 Rb8 31.Rd1 Nc7 32.Qe4+ (4.335.805.457) 210
23.01 479:46 +2.16 19.Nd5 h6 20.Bxh6 gxh6 21.Rxh6 Qg7 22.Qh5 c6 23.Rg6 cxd5 24.Rxg7+ Kxg7 25.Bd3 Rf6 26.Bxf5 Kf8 27.Qh8+ Ke7 28.Qg7+ Rf7 29.Qe5 (5.919.747.377) 210
24.01 955:33 +2.36++ 19.Nd5 (11.470.349.611) 204
best move: Nc3-d5 time: 1023:07.938 min n/s: 204.631 nodes: 12.267.456.102

[George Tsavdaris]

Just in case anyone missed this move and is interested in running this through their setup----here it is.
Rybka 3 takes 23 minutes with my hardware, Q6600.

Zappa is just a little faster than Rybka 3, but both will play this move if given enough time.

I got the Deep Blue guys to run this through their system and it took Deep Blue about 2.5 minutes to play 19.Nd5.

What Deep Blue are you talking about?
Deep Blue has been dismantled before many many years, so it can't play Chess right now, so i don't have any idea of what you are saying here.

[Spock]

Hiarcs 12.1 on my Quad Core Opteron (somewhat slower than the Q6600) finds it 10 mins:


10/25 0:00 +0.05 1.Bd3 c6 2.Re5 d5 3.Rxf5 Rxf5 4.Qxf5 Qxf5 (476.018) 550
11/25 0:01 +0.30++ 1.Bd3 (1.288.322) 652
11/32 0:02 +0.30 1.Bd3 c6 2.b4 Be7 (1.373.915) 670
12/32 0:03 +0.06 1.Bd3 c6 2.Na4 d6 (2.689.962) 812
13/35 0:07 +0.29 1.Bd3 h6 2.Re5 d6 3.Rxf5 (7.296.018) 937
14/37 0:15 +0.14 1.Bd3 c6 2.Na4 d6 3.b4 Bb6 4.Rh5 Nc7 5.c4 Bd4 6.Re7 Ne8 7.Qf3 Kh8 8.c5 d5 (15.332.990) 1012
15/37 0:29 +0.11 1.Bd3 c6 2.b4 Bb6 3.Rh5 d5 4.Rxf5 Rxf5 5.Qxf5 Qxf5 6.Bxf5 Kf7 7.Na4 g6 (31.574.520) 1055
16/37 0:51 +0.05 1.Bd3 c6 2.Ne2 d5 3.Rh5 Bd7 4.Ng3 Rae8 5.Rxf5 Rxf5 6.Nxf5 Nf4 (55.574.642) 1086
16/38 1:08 +0.06 1.b4 (74.825.571) 1091
16/38 1:17 +0.35 1.b4 Be7 2.Rh5 c6 3.Bd3 (83.765.834) 1087
17/43 1:56 +0.10-- 1.b4 Be7 (127.988.317) 1096
17/49 2:29 -0.26 1.b4 Be7 2.Rh5 Qg4 3.Nd5 Bd8 4.Nf4 Bg5 (164.196.916) 1099
17/49 2:32 -0.25 1.Bd3 (167.160.444) 1098
17/49 2:56 +0.03 1.Bd3 c6 2.b4 Bb6 3.Rh5 d5 4.Rxf5 Rxf5 5.Qxf5 Qxf5 6.Bxf5 Kf7 7.h4 g6 8.Bd3 Bd7 9.h5 Rf8 10.hxg6+ hxg6 11.Na4 Bd4 12.c3 Bf6 13.c4 Rh8 (192.827.593) 1092
18/49 4:55 +0.28++ 1.Bd3 (320.780.525) 1083
18/51 5:11 +0.28 1.Bd3 c6 2.Na4 d6 3.b4 Bb6 4.Rh5 d5 (337.226.728) 1081
19/51 7:00 +0.03-- 1.Bd3 c6 (450.324.242) 1071
19/51 7:44 +0.03 1.Bd3 c6 2.Na4 d6 3.b4 Bb6 4.Rh5 d5 5.Rxf5 Rxf5 6.Qxf5 Qxf5 7.Bxf5 Kf7 8.c4 (498.112.240) 1071
19/51 10:20 +0.03 1.Nd5 (665.621.761) 1072
19/56 17:26 +0.52 1.Nd5 c6 2.Rxe6 Qxe6 3.Nf4 Qxa2 4.Rxh7 (1.162.785.683) 1111
20/56 28:42 +0.77++ 1.Nd5 (1.896.752.412) 1101
20/60 45:13 +1.00 1.Nd5 c6 2.Rxe6 Qxe6 3.Nf4 Qxa2 4.Rxh7 cxb5 5.Rh8+ Kf7 6.Qxf5+ Ke8 7.Qe5+ Kd8 8.Nd3 Qe6 9.Qg5+ Ke8 10.Nxc5 Qe7 11.Qh5+ Qf7 12.Nxb7 Qxh5 13.Nd6+ Ke7 14.Rxh5 (3.081.517.896) 1135
best move: Nc3-d5 time: 59:16.495 min n/s: 1.172.079 nodes: 4.168.514.567

[kgburcham]

[d] r1b2rk1/pppp2pp/4n1q1/1Bb2p2/7R/2N4Q/PPPB1PPP/4R1K1 w - -


Not sure what the time control was in this game, but we can see that Rybka will play 19.Nd5 with small Quad in a long game. Seems it was not just the depth of the cluster.


Rybka 3
hash 2048


3 minutes per move

18.00 0:40 +0.17 19.Bd3 c6 20.Na4 d6 21.b4 Bd4 22.Rxe6 Bxf2+ 23.Kxf2 Bxe6 24.Nc3 Rae8 25.a3 h6 26.Qg3 Qxg3+ (6.891.249) 175
19.01 3:40 +0.22 19.Bd3 c6 20.Na4 d6 21.b4 Bd4 22.Rxe6 Bxf2+ 23.Kxf2 Bxe6 24.Nc3 Rae8 25.a3 h6 26.Qg3 Qxg3+ 27.Kxg3 Rf7 28.Rd4 d5 29.h4 Rfe7 30.Ne2 Bf7 31.Nc1 (40.674.338) 188
19.13 6:35 +0.37++ 19.Nd5 (74.699.613) 193
19.01 8:22 +0.57++ 19.Nd5 (93.617.338) 190


5 minutes per move

19.00 0:00 +0.18 19.Bd3 c6 20.Na4 d6 21.b4 Bb6 22.Rh5 Rf6 23.Nxb6 axb6 24.Bxf5 Rxf5 25.Qxf5 Qxf5 26.Rxf5 Rxa2 27.Rf3 Rxc2 28.Rd3 d5 29.Be3 Rb2 30.Ra3 Kf7 31.Ra8 Bd7 32.Ra7 (37.028) 219
19.45 2:58 +0.38++ 19.Nd5 (37.054.999) 212
19.01 4:02 +0.58++ 19.Nd5 (46.697.772) 197

[M ANSARI]

In MPV mode Rybka 3 will find the move in about 40 seconds on my Octa, so my guess is that Rybka Cluster finds the move in less than a minute.