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Shirov's Bh3, Houdini solves it
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Robert Houdart



Joined: 15 Mar 2010
Posts: 1251
PostPost subject: Re: Shirov's Bh3, Houdini solves it    Posted: Tue Jul 03, 2012 11:05 pm Reply to topic Reply with quote
Vinvin wrote:
On Intel 3 cores @ 3.1 Ghz

FEN: 8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - 0 1

Houdini_15_w32:
...
30/56 14:11 2.726.080.589 3.202.000 +1,41 Ff5-e4 Rg1-f2
f6-f5 Fc3-d4 Re6-d7 g2-g3 Rd7-c6 Rf2-e3 Rc6-b5 Fd4-b2 Rb5-c4 Re3-d2
d5-d4 Rd2-e2 d4-d3+ Re2-d2 Rc4-b3 Fb2-d4 a4-a3 Rd2-c1 Rb3-c4 Fd4-e5
a3-a2 Fe5-a1 Fe4-c6 Fa1-b2 Rc4-b3 Fb2-a1 Rb3-b4 Rc1-d2 Rb4-c4 Fa1-f6
Fc6-a4 Ff6-a1 Fa4-c2 Fa1-c3 Rc4-b3 Fc3-d4 Rb3-b4
30/67+ 24:59 4.913.246.933 3.277.000 +1,49 Ff5-h3
30/78+ 1:36:56 21.150.955.106 3.636.000 +5,54 Ff5-h3
30/87 5:12:05 75.495.674.421 4.031.000 +5,37 Ff5-h3
Rg1-f2 Re6-f5 g2-g3 Rf5-e4 Fc3-b2 Re4-d3 Rf2-f3 Fh3-f1 Rf3-f2 Ff1-e2
Rf2-e1 f6-f5 Fb2-a3 Rd3-c2 Fa3-c5 Fe2-g4 Fc5-e3 Fg4-h5 Re1-f2 Rc2-c3
Rf2-e1 d5-d4 Fe3xd4+ Rc3xd4 Re1-d2 a4-a3 Rd2-c2 a3-a2
31/87 5:31:41 80.019.827.765 4.020.000 +5,37 Ff5-h3
Rg1-f2 Re6-f5 g2-g3 Rf5-e4 Fc3-b2 Re4-d3 Rf2-f3 Fh3-f1 Rf3-f2 Ff1-e2
Rf2-g2 Fe2-h5 Rg2-f1 Fh5-g4 Rf1-g1 d5-d4 Rg1-f2 f6-f5 Rf2-f1 Rd3-c2
Fb2xd4 a4-a3 Rf1-f2 a3-a2 Fd4-e5 Rc2-b1 Rf2-e3 a2-a1D Fe5xa1 Rb1xa1
Re3-f2 Ra1-b2 Rf2-e1 Rb2-c3
32/87 6:06:50 87.684.517.651 3.983.000 +5,49 Ff5-h3
Rg1-f2 Re6-f5 g2-g3 Rf5-e4 Fc3-b2 Re4-d3 Rf2-f3 Fh3-f1 Rf3-f2 Ff1-e2
Rf2-g2 Fe2-h5 Rg2-f2 f6-f5 Rf2-g2 Fh5-g4 Rg2-f2 Fg4-e2 Rf2-g1 Fe2-f3
Rg1-f1 Ff3-h5 Rf1-e1 Fh5-e2 Fb2-a3 Fe2-f3 Re1-f2 Ff3-g4 Fa3-b2 Fg4-e2
33/87+ 7:26:21 105.294.949.142 3.931.000 +5,72 Ff5-h3
33/87 7:49:08 110.308.795.417 3.918.000 +5,71 Ff5-h3
Rg1-f2 Re6-f5 g2-g3 Rf5-e4 Fc3-b2 Re4-d3 Rf2-f3 Fh3-f1 Rf3-f2 Ff1-e2
Rf2-g2 Fe2-h5 Rg2-f2 f6-f5 Rf2-f1 Fh5-e2+ Rf1-e1 Fe2-f3 Re1-f1 Ff3-h5
Rf1-f2 Fh5-g4 Rf2-e1 Fg4-f3 Re1-f1

24m59s to find the move but 1h12m more to solve the fail-high.
Robert, is the latest Houdini faster to resolve the fail-high ?

Yes, the fail-high trick works very well here: fail high after 2:33 (1.1 billion nodes), complete PV after 3:35 (1.5 billion nodes).
Below the analysis with the current Houdini dev on 3 cores of a standard core i5-750, with 2048 MB of hash:
Code:
8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - -

Engine: Houdini DEV 3T EGTB (2048 MB)
by Robert Houdart

28/50  0:56   -1.37    1...Be4 2.g3 f5 3.Kf2 Kd6 4.Bb4+ Kc6
                       5.Ke2 Kb5 6.Bf8 Kc4 7.Kd2 d4 8.Bd6 d3
                       9.Be7 Kb3 10.Bf6 a3 11.Kc1 Bh1
                       12.Bd4 Ka2 13.Be3 Bb7 14.Bf4 Bf3 (380.899.736) 6771 TB:480

29/50  1:23   -1.37    1...Be4 2.g3 f5 3.Kf2 Kd6 4.Bb4+ Kc6
                       5.Ke2 Kb5 6.Bf8 Kc4 7.Kd2 d4 8.Bd6 d3
                       9.Be7 Kb3 10.Bf6 a3 11.Kc1 Bh1
                       12.Bd4 Ka2 13.Be3 Bb7 14.Bf4 Bf3 (569.305.857) 6780
                       TB:1.996

29/66  2:33   -1.45++  1...Bh3 (1.067.275.340) 6930
                       TB:8.194

29/66  2:47   -1.61++  1...Bh3 (1.168.173.148) 6975
                       TB:8.765

26/66  2:52   -1.97++  1...Bh3 (1.204.615.635) 6985
                       TB:8.829

26/66  3:05   -2.92++  1...Bh3 (1.298.645.183) 7010
                       TB:8.938

26/66  3:35   -3.96    1...Bh3 2.g3 Kf5 3.Kf2 Ke4 4.Ke2 a3
                       5.Bb4 a2 6.Bc3 d4 7.Ba1 Be6 8.Kd2 Bg4
                       9.Bb2 f5 10.Ba1 d3 11.Bc3 Bh5 12.Bg7 Be2
                       13.Ba1 Kf3 14.Be5 Bf1 (1.522.155.628) 7063
                       TB:9.589

27/66  3:47   -3.77--  1...Bh3 2.g3 (1.609.053.638) 7083
                       TB:10.469

27/66  3:50   -3.40--  1...Bh3 2.g3 (1.630.813.610) 7083
                       TB:11.215

27/67  4:00   -4.12++  1...Bh3 (1.710.238.541) 7105
                       TB:11.626

27/67  4:02   -4.10    1...Bh3 2.Kf2 Kf5 3.Ke3 Bxg2 4.Bb2 Be4
                       5.Kf2 Ke6 6.Kg3 f5 7.Bd4 a3 8.Kf4 a2
                       9.Kg5 Kd6 10.Kf4 Bc2 11.Ba1 Ke6
                       12.h5 gxh5 13.Kg3 Kd6 14.Bb2 Bb1 (1.723.909.906) 7103
                       TB:12.051

28/67  4:17   -4.27++  1...Bh3 (1.838.851.021) 7143
                       TB:12.780

28/67  4:33   -4.61++  1...Bh3 (1.965.514.862) 7179
                       TB:13.432

28/67  4:56   -5.51++  1...Bh3 (2.135.543.862) 7209
                       TB:14.422

28/68  5:38   -7.63    1...Bh3 2.Kf2 Kf5 3.Ke3 Bxg2 4.Bb2 Be4
                       5.Kf2 Ke6 6.Kg3 f5 7.Bd4 a3 8.Kf4 a2
                       9.Kg5 Kd6 10.Kf4 Kc6 11.Ba1 Kc5
                       12.Ke3 Kc4 13.Bb2 d4+ 14.Bxd4 f4+ (2.459.980.802) 7273
                       TB:17.413
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Display posts from previous:   
Subject Author Date/Time
Shirov's Bh3, Houdini solves it Vincent Lejeune Tue Jul 03, 2012 11:57 am
      Re: Shirov's Bh3, Houdini solve it Louis Zulli Tue Jul 03, 2012 12:00 pm
            Re: Shirov's Bh3, Houdini solve it Louis Zulli Tue Jul 03, 2012 12:20 pm
      Re: Shirov's Bh3, Houdini solves it Don Dailey Tue Jul 03, 2012 12:30 pm
            Re: Shirov's Bh3, Houdini solves it Ted Summers Tue Jul 03, 2012 1:15 pm
                  Re: Shirov's Bh3, Houdini solves it Marek Kwiatkowski Tue Jul 03, 2012 3:55 pm
                        Re: Shirov's Bh3, Houdini solves it Ernest Bonnem Tue Jul 03, 2012 9:12 pm
                              Re: Shirov's Bh3, Houdini solves it Marek Kwiatkowski Tue Jul 03, 2012 9:42 pm
                  Re: Shirov's Bh3, Houdini solves it Vincent Lejeune Thu Jul 05, 2012 12:43 am
                        Re: Shirov's Bh3, Houdini solves it Marc Halstern Thu Jul 05, 2012 2:15 am
      Re: Shirov's Bh3, Houdini solves it Herbert L Tue Jul 03, 2012 10:08 pm
      Re: Shirov's Bh3, Houdini solves it Robert Houdart Tue Jul 03, 2012 11:05 pm
            Re: Shirov's Bh3, Houdini solves it kgburcham Wed Jul 04, 2012 5:17 pm
      Re: Shirov's Bh3, Houdini solves it fernando Wed Jul 04, 2012 7:15 pm
            Re: Shirov's Bh3, Houdini solves it kgburcham Wed Jul 04, 2012 9:28 pm
                  Re: Shirov's Bh3, Houdini solves it fernando Wed Jul 04, 2012 9:53 pm
                        Re: Shirov's Bh3, Houdini solves it Vincent Lejeune Wed Jul 04, 2012 11:05 pm
                              Re: Shirov's Bh3, Houdini solves it fernando Wed Jul 04, 2012 11:06 pm
                                    Re: Shirov's Bh3, Houdini solves it Vincent Lejeune Wed Jul 04, 2012 11:35 pm
                                          Re: Shirov's Bh3, Houdini solves it fernando Wed Jul 04, 2012 11:38 pm
                                          Re: Shirov's Bh3, Houdini solves it Marek Kwiatkowski Thu Jul 05, 2012 4:10 am
            Re: Shirov's Bh3, Houdini solves it George Speight Thu Jul 05, 2012 7:13 am
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