beram wrote:How long to find best move 19. Rf6 ?
[d] r4rk1/2q1bpp1/p3b2p/3pP3/1p1Q4/3BB3/PPP3PP/1K1R1R2 w - - 0 1
From a recent Nunn2 match FireBird 1.0 beta w32 - Rybka 3 32-bit,
(Centrino DualCore T8300, 2100 Mhz, 40m/40+20m/40+20m)
You can see difference in time between FB1.0 beta and Rybka 3
Actually in the game FB played this after 1:39 min:sec
Analysis by Rybka 3 32-bit 2CPU (Centrino DualCore T8300, 2100 Mhz)
19.Rf3 Rfc8 20.Rg3 Bc5 21.Qf4 Bxe3 22.Qxe3 Kh8 23.Rf1 Qc5 24.h3 Qxe3 25.Rxe3 Rc5 26.Rf4 a5
= (0.15) Depth: 14 00:00:38 2615kN
19.Rf6
+/= (0.42 !) Depth: 14 00:02:19 8908kN
19.Rf6 Rfc8 20.Rxe6 fxe6[] 21.Qg4[] Qxe5 22.Bd4 h5 23.Qg6 Qxd4 24.Qh7+[] Kf8 25.Qh8+[] Kf7[] 26.Qxh5+[] Kf8[] 27.Bg6 Qxd1+ 28.Qxd1 Bc5 29.Qg4 Ke7 30.Bh5 Rf8 31.Qxg7+ Kd6 32.Bf7 Ke7[]
+/= (0.39) Depth: 14 00:02:24 9301kN
Firebird 1.0 beta 32-bit 2CPU
19.Rf3 Rfc8 20.Rg3 Bc5 21.Qf4 Bxe3 22.Qxe3 Kh8 23.Rf1 Qc5 24.h3 Qxe3 25.Rxe3 Ra7 26.Ref3 a5 27.Rf4 Kg8 28.Rd4 Re7 29.Be2
= (0.16) Depth: 19 00:00:34 49296kN
19.Rf6
= (0.24) Depth: 19 00:01:35 144mN
19.Rf6
+/= (0.32) Depth: 19 00:02:05 188mN
grts Bram

I get slightly different times, and not just in speed. Did you clear the hash when running this?
Analysis by Rybka 3:
1.h4 Kh8 2.Rf4 Rac8 3.Qa7 Qxa7 4.Bxa7 a5 5.Bb6
= (0.23) Depth: 11 00:00:02 321kN
1.h4 Rac8 2.Qf4 a5 3.Qg3 Kh8 4.Rf3 Qc6 5.Rf4
= (0.12) Depth: 12 00:00:07 931kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Kh8 4.Rf1 Bxe3
= (0.23) Depth: 12 00:00:08 1057kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.h3 Qxe3 7.Rxe3 Kg8
+/= (0.26) Depth: 13 00:00:12 1636kN
1.Rf3 Rfc8 2.Qf4 Qa5 3.Bd2 Rab8 4.h4 Kh8 5.Rg3 Bf8 6.a3
= (0.22) Depth: 14 00:00:17 2215kN
1.Rf6 Rfc8 2.Rxe6 fxe6 3.Qg4 Qxe5 4.Bd4 h5 5.Qg6 Qxd4 6.Qh7+ Kf8 7.Qh8+
+/= (0.42) Depth: 14 00:00:45 5401kN
1.Rf6 h5 2.Rdf1 Rac8 3.R6f3 a5 4.Rg3 h4 5.Rgf3 Rfe8 6.R1f2 Qc5 7.Qf4
+/= (0.33) Depth: 15 00:01:17 9033kN
1.Rf6 h5 2.Rdf1 Rac8 3.R6f3 a5 4.Rg3 h4 5.Rgf3 Rfe8 6.Bf2 g5 7.g3 Qb8
+/= (0.30) Depth: 16 00:01:44 12527kN
Analysis by FireBird 1.0 beta x64:
1.Rf3 Kh8 2.Rg3 Rfe8 3.Rf1 Bf8 4.h4 Be7 5.Qf4 Rac8 6.Bd4 Qa5 7.Ka1
+/= (0.27) Depth: 11 00:00:00 408kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Qd4 Re8 6.Rf1 Rac8 7.h3
= (0.25) Depth: 12 00:00:00 764kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Qd4 Re8 6.Rf1 Rac8 7.h3
= (0.25) Depth: 12 00:00:00 861kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Qd4 Re8 6.Rf1 Rac8 7.h4 Qa5
= (0.23) Depth: 13 00:00:00 991kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Qd4 Re8 6.Rf1 Rac8 7.h4 Qa5
= (0.23) Depth: 13 00:00:00 1348kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Qd4 Re8 6.Rf1 Rac8 7.h4 Qa5 8.Ka1 Qc5
= (0.23) Depth: 14 00:00:00 1510kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Qd4 Re8 6.Rf1 Rac8 7.h4 Qa5 8.Ka1 Qc5
= (0.23) Depth: 14 00:00:01 1956kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qa5 6.Qd4 Rc6 7.h4 Re8 8.h5 Qc7 9.Ka1
= (0.19) Depth: 15 00:00:01 2904kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qa5 6.Qd4 Rc6 7.h4 Re8 8.h5 Qc7 9.Ka1
= (0.19) Depth: 15 00:00:02 4511kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.h4 Qxe3 7.Rxe3 a5 8.Ref3 Kg8 9.Rg3 Rc7 10.Rf6
= (0.21) Depth: 16 00:00:02 5069kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.h4 Qxe3 7.Rxe3 a5 8.Ref3 Kg8 9.Rg3 Rc7 10.Rf6
= (0.21) Depth: 16 00:00:02 6827kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.h4 Rab8 7.h5 Qxe3 8.Rxe3 Rc6 9.Ref3 Kg8 10.Rg3 d4
= (0.20) Depth: 17 00:00:03 8224kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.h4 Rab8 7.h5 Qxe3 8.Rxe3 Rc6 9.Ref3 Kg8 10.Rg3 d4
= (0.20) Depth: 17 00:00:05 12615kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.Rf4 Qxe3 7.Rxe3 a5 8.Re1 Kg8 9.Ref1 Rc7 10.Rd4 Re8 11.h3 h5
= (0.17) Depth: 18 00:00:06 15710kN
1.Rf3 Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.Rf4 Qxe3 7.Rxe3 a5 8.Re1 Kg8 9.Ref1 Rc7 10.Rd4 Re8 11.h3 h5
= (0.17) Depth: 18 00:00:09 24956kN
1.Rf3! Rfc8 2.Rg3 Bc5 3.Qf4 Bxe3 4.Qxe3 Kh8 5.Rf1 Qc5 6.Rf4 Qxe3 7.Rxe3 a5 8.Re1 Kg8 9.Ref1 Rc7 10.Rd4 Re8 11.h3 h5 12.Bb5
= (0.25) Depth: 19 00:00:15 40855kN
1.Rf3 Rfc8 2.Rdf1 Bc5 3.Qf4 Bxe3 4.Rxe3 Qe7 5.Rg3 Kh8 6.Qd4 a5 7.Rf4 Qc7 8.Qe3 Qc5 9.Qxc5 Rxc5 10.Rd4 Rac8 11.Rf3 Kg8
= (0.17) Depth: 19 00:00:15 42207kN
1.Rf6!
+/= (0.33) Depth: 19 00:00:51 146mN
1.Rf6 h5 2.Rdf1 a5 3.Qh4 Bg4 4.Qg5 Rac8 5.h3 Be2 6.Bb6 Qxb6 7.Rxb6 Bxg5 8.Bxe2 Rce8 9.Bxh5 Rxe5 10.Rb5 Bf6 11.Bf3 d4 12.Rxe5 Bxe5 13.Bd5 Bf6 14.Re1 Rd8 15.Bb3 Rc8 16.g3
+/= (0.28) Depth: 19 00:01:19 224mN
1.Rf6 h5 2.Rdf1 a5 3.Qh4 Bg4 4.Qg5 Rac8 5.h3 Be2 6.Bb6 Qxb6 7.Rxb6 Bxg5 8.Bxe2 Rce8 9.Bxh5 Rxe5 10.Rb5 Bf6 11.Bf3 d4 12.Rxe5 Bxe5 13.Bd5 Bf6 14.Re1 Rd8 15.Bb3 Rc8 16.g3
+/= (0.28) Depth: 19 00:01:19 225mN
1.Rf6 h5 2.Rdf1 a5 3.Qh4 Bg4 4.Qg5 Rac8 5.h3 Be2 6.Bb6 Qxb6 7.Rxb6 Bxg5 8.Bxe2 Rce8 9.Bxh5 Rxe5 10.Rb5 Bf6 11.Bf3 d4 12.Rxe5 Bxe5 13.Bd5 Bf6 14.Re1 Rd8 15.Bb3 Rc8 16.g3
+/= (0.28) Depth: 20 00:01:27 248mN
1.Rf6 h5 2.Rdf1 a5 3.Qh4 Bg4 4.Qg5 Rac8 5.h3 Be2 6.Bb6 Qxb6 7.Rxb6 Bxg5 8.Bxe2 Rce8 9.Bxh5 Rxe5 10.Rb5 Bf6 11.Bf3 d4 12.Rxe5 Bxe5 13.Bd5 Bf6 14.Re1 Rd8 15.Bb3 Rc8 16.g3
+/= (0.28) Depth: 20 00:01:31 257mN
1.Rf6 h5 2.Rdf1 a5 3.Qh4 Bg4 4.Qg5 Rac8 5.h3 Be2 6.Bb6 Qxb6 7.Rxb6 Bxg5 8.Bxe2 Rce8 9.Bxh5 Rxe5 10.Rb5 Bf6 11.Bf3 d4 12.Rxe5 Bxe5 13.Bd5 Bf6 14.Re1 Rd8 15.Bb3 Rc8 16.g3 Bg5
+/= (0.28) Depth: 21 00:01:45 296mN
1.Rf6 h5 2.Rdf1 a5 3.Qh4 Bg4 4.Qg5 Rac8 5.h3 Be2 6.Bb6 Qxb6 7.Rxb6 Bxg5 8.Bxe2 Rce8 9.Bxh5 Rxe5 10.Rb5 Bf6 11.Bf3 d4 12.Rxe5 Bxe5 13.Bd5 Bf6 14.Re1 Rd8 15.Bb3 Rc8 16.g3 Bg5
+/= (0.28) Depth: 21 00:01:52 317mN