Author: Andreas Guettinger
Date: 06:04:22 11/21/05
Go up one level in this thread
On November 21, 2005 at 04:36:19, enrico carrisco wrote: >On November 21, 2005 at 04:34:26, Andreas Guettinger wrote: > >>On November 20, 2005 at 22:42:02, enrico carrisco wrote: >> >>>All find mate -- some do it instantly, but none take over 20 seconds... >>> >>>Now let's use Fruit 2.2.1 in the same conditions (no egtb): >>> >>>8/2k5/8/3R4/8/8/5K2/8 w - - 0 1 >>> >>>Analysis by Fruit 2.2.1: >>> >>>1.Ke3 >>> +- (5.45) Depth: 1/1 00:00:00 >>>1.Ke3 Kc6 >>> +- (5.57) Depth: 2/2 00:00:00 >>>1.Ke3 Kc6 2.Ke4 >>> +- (5.45) Depth: 3/4 00:00:00 >>>1.Kg3 Kb7 2.Kf4 >>> +- (5.55) Depth: 3/6 00:00:00 >>>1.Kg3 Kb7 2.Kf4 Kc6 >>> +- (5.58) Depth: 4/6 00:00:00 >>>1.Ke3 Kc6 2.Ke4 Kc7 >>> +- (5.76) Depth: 4/6 00:00:00 >>>1.Ke3 Kc6 2.Ke4 Kc7 3.Rc5+ Kd6 >>> +- (5.57) Depth: 5/8 00:00:00 >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Kb7 >>> +- (5.85) Depth: 6/10 00:00:00 13kN >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Rd6+ Kb5 4.Rg6 Kb4 5.Rb6+ Ka4 >>> +- (5.89) Depth: 7/11 00:00:00 58kN >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Rd6+ Kb5 4.Rg6 Kb4 5.Rb6+ Ka5 >>> +- (5.89) Depth: 8/13 00:00:01 238kN >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Rd7 Kb5 4.Rd6 Kb4 5.Rb6+ Ka5 >>> +- (5.89) Depth: 9/14 00:00:01 972kN >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Ke5 Kc7 4.Rc5+ Kd7 5.Rc1 Ke7 6.Rc7+ Kd8 >>> +- (6.25) Depth: 10/18 00:00:01 3671kN >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Ke5 Kc7 4.Rb5 Kd7 5.Rc5 Ke7 6.Rc7+ Kd8 >>> +- (6.25) Depth: 11/19 00:00:05 13571kN >>>1.Rh5 Kd6 2.Ke3 Ke6 3.Kd4 Kd6 4.Rh6+ Ke7 5.Rc6 Ke8 6.Rc7 Kd8 >>> +- (6.26) Depth: 11/20 00:00:18 48869kN >>>1.Rh5 Kd6 2.Ke2 Kd7 3.Kd3 Kc6 4.Rh6+ Kc7 5.Rg6 Kb8 6.Rg7 Kc8 7.Kd4 >>> +- (6.14) Depth: 12/20 00:00:28 77398kN >>>1.Ke3 Kc6 2.Ke4 Kc7 3.Ke5 Kc6 4.Ke6 Kc7 5.Rd6 Kc8 6.Rd7 Kb8 >>> +- (6.33) Depth: 12/20 00:00:30 83851kN >>>1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Kb7 4.Ke5 Ka7 5.Rc6 Kb8 6.Rc4 Ka8 7.Rc7 >>> +- (6.45) Depth: 13/22 00:01:43 279150kN >>> >>> >>>Analysis stopped after 10 minutes -- all analysis on an A64 @ 2.7GHz with 512MB >>>hash (except CT 14 due to hash size control limitations.) >>> >>>Please -- will the die-hard "EGTB files are a waste" believers please stand-up. >>> >>>Regards, >>> >>>Enrico. >> >>Deph 13 in 1:43 min in an endgame is indeed a bit hard to believe. >>Smells like bug. >> >>A similar behaviour has been reported previously. I think it seems to occur >>whether EGTB are on or off, if they are on the EGTB are suddenly not accessed >>anymore in a subsequent analysis with very slow search. >> >> >>regards >>Andy > > >Greetings. > >Yes, I missed that earlier thread (perhaps weeks ago?) and we discovered that >the hash wasn't clearing further below (at least that is the best guess to >explain it.) > >Regards, > >-elc. It was maybe 3-4 weeks ago. I wonder if somebody actually filed the bug to the Fruit team. There has too be more than the hash clearing, or how else can the 13 ply depth and the very slow search be explained? - Andy
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