Author: enrico carrisco
Date: 23:42:11 11/20/05
Go up one level in this thread
On November 21, 2005 at 02:38:15, Uri Blass wrote: >On November 20, 2005 at 22:42:02, enrico carrisco wrote: > >>Let's take a simple KRK ending... >> >>[D]8/2k5/8/3R4/8/8/5K2/8 w - - 0 1 >> >>Now let's run it through some of our favorite new and old engines without using >>any egtb's... (i.e. engine's knowledge of the ending only.) >> >>8/2k5/8/3R4/8/8/5K2/8 w - - 0 1 > ><snipped> >>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 > >Something is wrong in your analysis > This is interesting. What size hash did you use? I assume your settings are default. I just re-checked it and I am getting the same analysis. -elc. >I ger the following analysis with fruit2.2.1 with no tablebases > >New game, >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: 2/4 00:00:00 >1.Ke3 Kc6 2.Ke4 > +- (5.45) Depth: 3/4 00:00:00 >1.Ke3 Kb6 2.Ke4 Kc6 > +- (5.67) Depth: 4/6 00:00:00 >1.Ke3 Kb7 2.Kd4 Kb6 3.Ke4 > +- (5.55) Depth: 5/8 00:00:00 >1.Ke3 Kb7 2.Kd4 Kc6 3.Ke4 Kb6 > +- (5.76) Depth: 6/10 00:00:00 9kN >1.Ke3 Kb7 2.Kd4 Kc6 3.Rc5+ Kd6 4.Re5 Kc6 > +- (5.67) Depth: 7/10 00:00:00 25kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Ke5 Kb6 4.Kd6 Ka6 > +- (5.75) Depth: 8/12 00:00:00 61kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Rc5+ Kd6 4.Rc3 Ke6 5.Rf3 Kd6 6.Rf6+ Kd7 > +- (5.67) Depth: 9/14 00:00:01 105kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Kc4 Kb6 4.Rc5 Kb7 5.Kb5 Kb8 > +- (5.79) Depth: 10/16 00:00:01 203kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Kc4 Kb6 4.Rd6+ Kc7 5.Kc5 Kb7 6.Rg6 Kc8 > +- (5.87) Depth: 11/16 00:00:01 302kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Kc4 Kb6 4.Rd6+ Kc7 5.Kc5 Kb8 6.Rd7 Kc8 7.Rg7 > +- (6.04) Depth: 12/18 00:00:01 418kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Kc4 Kb6 4.Rd6+ Kc7 5.Kc5 Kb7 6.Rd7+ Kc8 7.Kd6 Kb8 8.Ke5 > +- (6.23) Depth: 13/20 00:00:01 736kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Kc4 Kb6 4.Rd6+ Kb7 5.Kb5 Kc7 6.Kc5 Kb7 7.Rd7+ Kc8 8.Kc6 >Kb8 > +- (6.23) Depth: 14/20 00:00:01 975kN >1.Ke3 Kb6 2.Kd4 Kc6 3.Kc4 Kb6 4.Rc5 Ka7 5.Kb5 Kb7 6.Rc6 Ka7 7.Rc7+ Ka8 8.Rd7 Kb8 > +- (6.26) Depth: 15/22 00:00:01 1401kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Ke5 Kb7 5.Kd5 Kb6 6.Kd6 Kb7 7.Rc6 Kb8 8.Rc7 Ka8 > +- (6.55) Depth: 16/24 00:00:02 4852kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Ke5 Kb7 5.Kd5 Kb6 6.Kd6 Kb7 7.Rb5+ Ka6 8.Kc6 Ka7 >9.Ra5+ Kb8 10.Ra4 Kc8 11.Ra8# > +- (#11) Depth: 17/24 00:00:03 5509kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Ke5 Kb7 5.Kd5 Kb6 6.Kd6 Kb7 7.Rb5+ Ka6 8.Kc6 Ka7 >9.Ra5+ Kb8 10.Ra4 Kc8 11.Ra8# > +- (#11) Depth: 18/24 00:00:04 5858kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Ke5 Kb7 5.Kd5 Kb6 6.Kd6 Kb7 7.Rb5+ Ka6 8.Kc6 Ka7 >9.Ra5+ Kb8 10.Ra4 Kc8 11.Ra8# > +- (#11) Depth: 19/24 00:00:05 6374kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Ke5 Kb7 5.Kd5 Kb6 6.Kd6 Kb7 7.Rb5+ Ka6 8.Kc6 Ka7 >9.Ra5+ Kb8 10.Ra4 Kc8 11.Ra8# > +- (#11) Depth: 20/24 00:00:05 7177kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Kc4 Kb6 5.Kb4 Ka6 6.Rb5 Ka7 7.Ka5 Ka8 8.Kb6 Kb8 >9.Rc5 Ka8 10.Rc8# > +- (#10) Depth: 21/24 00:00:05 7840kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Kc4 Kb6 5.Kb4 Ka6 6.Rb5 Ka7 7.Ka5 Ka8 8.Kb6 Kb8 >9.Rc5 Ka8 10.Rc8# > +- (#10) Depth: 22/24 00:00:06 8658kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Kc4 Kb6 5.Kb4 Ka6 6.Rb5 Ka7 7.Ka5 Ka8 8.Kb6 Kb8 >9.Rc5 Ka8 10.Rc8# > +- (#10) Depth: 23/24 00:00:07 9594kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Kc4 Kb6 5.Kb4 Ka6 6.Rb5 Ka7 7.Ka5 Ka8 8.Kb6 Kb8 >9.Rc5 Ka8 10.Rc8# > +- (#10) Depth: 24/24 00:00:07 10573kN >1.Ke3 Kc6 2.Kd4 Kb6 3.Rc5 Ka6 4.Kc4 Kb6 5.Kb4 Ka6 6.Rb5 Ka7 7.Ka5 Ka8 8.Kb6 Kb8
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