Author: Uri Blass
Date: 00:12:49 10/06/05
Go up one level in this thread
On October 06, 2005 at 02:37:34, Uri Blass wrote: >On October 06, 2005 at 02:13:50, Lance Perkins wrote: > >>On October 05, 2005 at 21:03:11, Will Singleton wrote: >> >>>A comp played this move against my comp on ICC today, took less than 30 secs. >>>Can any program find it as fast? >>> >>>[d]3rn1k1/2qbrp1p/1p1ppnpQ/p5NP/1PP1P3/P1N4R/4BPP1/3R2K1 w - - bm Rdd3 >> >>Need 42 secs... >> >>Thinker 5.0c on a 2.4ghz AMD >> 8 99 145 1347078 h5g6 f7g6 d1d2 >> 8 105 186 1649244 h3h4 d7c6 e2g4 c7c8 >> 9 108 848 7140678 f2f4 a5b4 a3b4 d7c6 e2g4 >>10 96 1787 14663556 h5g6 f7g6 h3h4 d7c6 e2d3 >>10 99 2037 16294503 h3h4 d7c6 d1d2 a5b4 h5g6 >>10 162 4246 29903901 d1d3 d6d5 c4d5 > >congratulations. > >42*2.4/2=50.4 seconds > >50.4*32=1608.3 > >Thinker is more than 32 times faster than Fruit2.2 that still does not find it >after more than 35 minutes on my A3000(2ghz) after searching more than 1,300,000 >Knodes > >If you can only be more than 32 times faster than Fruit2.2 in every position >then thinker may be more than 200 elo better than Fruit2.2 > >Note that Fruit2.2's behaviour is interesring. >At depth 15 it seems to be hypnotized by Rd3 >It cannot be convinced to play it but also cannot leave analyzing this move. > >Here is Fruit2.2's output(after 35 minutes of analysis) > >New game, >3rn1k1/2qbrp1p/1p1ppnpQ/p5NP/1PP1P3/P1N4R/4BPP1/3R2K1 w - - 0 1 > >Analysis by Fruit 2.2: > >1.hxg6 hxg6 > +- (1.96) Depth: 1/8 00:00:00 >1.hxg6 fxg6 2.bxa5 > +- (1.68) Depth: 2/15 00:00:00 >1.hxg6 fxg6 2.Rd2 axb4 3.axb4 > +- (1.68) Depth: 3/15 00:00:00 >1.hxg6 fxg6 2.Rd2 Bc6 3.bxa5 > +- (1.48) Depth: 4/15 00:00:00 >1.bxa5 bxa5 2.hxg6 fxg6 3.Nb5 Bxb5 4.cxb5 > +- (1.57) Depth: 4/16 00:00:00 >1.Rd2 axb4 2.axb4 gxh5 3.Bxh5 Qxc4 > +- (1.63) Depth: 4/17 00:00:00 >1.Rd2 Bc6 2.hxg6 fxg6 3.b5 Bb7 > +- (1.59) Depth: 5/23 00:00:00 >1.Rd2 Bc6 2.Bd1 axb4 3.axb4 Ng7 4.hxg6 hxg6 > +- (1.46) Depth: 6/24 00:00:00 69kN >1.Rh4 Bc6 2.Bg4 axb4 3.axb4 Ng7 4.hxg6 hxg6 > +- (1.53) Depth: 6/26 00:00:00 156kN >1.b5 Ra8 2.Rdd3 gxh5 3.Rd2 e5 > +- (1.58) Depth: 6/26 00:00:00 219kN >1.b5 Rc8 2.hxg6 fxg6 3.Rd2 e5 4.Rh4 Qb7 > +- (1.48) Depth: 7/26 00:00:01 329kN >1.b5 Rc8 2.Rh4 Qb7 3.Rd2 e5 4.Nd5 Nxd5 5.Qxh7+ Kf8 6.Rxd5 > +- (1.45) Depth: 8/30 00:00:01 683kN >1.Rh4 Qa7 2.b5 Rc8 3.Rd2 e5 4.Nd5 Nxd5 5.Qxh7+ Kf8 6.Rxd5 > +- (1.49) Depth: 8/30 00:00:01 921kN >1.Rh4 Qa7 2.b5 Rc8 3.Rd2 Qb7 4.hxg6 fxg6 5.Rh3 e5 > +- (1.49) Depth: 9/32 00:00:03 1859kN >1.Rh4 Qa7 2.b5 Rc8 3.Rd2 Qb7 4.a4 e5 5.Nd5 Nxd5 6.Qxh7+ Kf8 7.Rxd5 > +- (1.45) Depth: 10/40 00:00:06 3295kN >1.Rh4 Qa7 2.b5 Rc8 3.Rd2 Qb7 4.a4 Rc5 5.hxg6 fxg6 6.Rh3 e5 > +- (1.41) Depth: 11/40 00:00:12 7239kN >1.Bd3 axb4 2.axb4 Bc6 3.Bc2 Qc8 4.Bb3 Nc7 5.Rf3 Nce8 6.Ra1 Rc7 > +- (1.57) Depth: 11/40 00:00:30 17310kN >1.Bd3 axb4 2.axb4 Bc6 3.Bc2 Qc8 4.Bb3 Nc7 5.Rf3 Nce8 6.Ra1 Rc7 7.hxg6 hxg6 > +- (1.57) Depth: 12/42 00:00:34 20005kN >1.Bd3 axb4 2.axb4 Bc6 3.Bc2 Bb7 4.e5 dxe5 5.Rxd8 Qxd8 6.Nxh7 Nxh7 7.hxg6 fxg6 >8.Qxg6+ Rg7 9.Qxe6+ Kf8 10.Rxh7 Rxg2+ 11.Kf1 > +- (1.81) Depth: 13/46 00:00:52 31002kN >1.Bd3 axb4 2.axb4 Bc6 3.Bc2 Bb7 4.e5 dxe5 5.Rxd8 Qxd8 6.Nxh7 Nxh7 7.hxg6 fxg6 >8.Qxg6+ Rg7 9.Qxe6+ Kf8 10.Rxh7 Rxg2+ 11.Kf1 > +- (1.81) Depth: 14/50 00:01:10 42884kN >1.Bd3 axb4 2.axb4 Bc6 3.Bc2 Bb7 4.e5 dxe5 5.Rxd8 Qxd8 6.Nxh7 Nxh7 7.hxg6 fxg6 >8.Qxg6+ Rg7 9.Qxe6+ Kf8 10.Rxh7 Rxg2+ 11.Kf1 > +- (1.81) Depth: 15/52 00:01:48 67203kN > >(, 06.10.2005) > > >Uri finally Fruit found it: +- (4.07) Depth: 15/62 00:52:23 2008025kN 1.Rdd3 d5 2.Nxh7 Nxh7 3.hxg6 fxg6 4.Rdg3 Rg7 5.Rxg6 Nhf6 6.Rxg7+ Nxg7 7.Qxf6 Re8 8.Rg3 Bc6 9.cxd5 exd5 10.exd5 axb4 11.axb4 +- (4.29) Depth: 16/62 00:57:34 2192092kN A very bad branching factore at depth 15. Now I test with history threshold=50 It seems to be hypnotized by Rd3 at depth 14. I suspect that it may find it now at depth 14 and faster but we are going to see if I am right Uri
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