Author: Dann Corbit
Date: 18:41:39 10/09/01
Go up one level in this thread
On October 09, 2001 at 21:07:50, Slater Wold wrote: >On October 09, 2001 at 13:01:13, Uri Blass wrote: > >>[D]8/1P6/8/5k2/2K4p/7r/1r4p1/6R1 b - - 0 61 > >PFGA: EPD record: 1 ID: Mate in 10 >end-game phase > clearing hash tables > time surplus 0.00 time limit 60:00 (60:00) > nss depth time score variation (1) >starting thread 1 > 8 0.30 -13.71 1. ... Rhb3 2. b8=Q Rxb8 3. Kd4 R8b4+ > 4. Kd3 h3 5. Kc3 Ke5 > 8-> 0.50 -13.71 1. ... Rhb3 2. b8=Q Rxb8 3. Kd4 R8b4+ > 4. Kd3 h3 5. Kc3 Ke5 > 9 0.56 ++ 1. ... Rhb3!! > 9 1.51 -21.26 1. ... Rxb7 2. Kc5 Rc3+ 3. Kd6 Rd7+ > 4. Kxd7 Rc1 5. Ke8 Rxg1 6. Kf8 h3 7. > Ke7 > 9 2.17 -25.54 1. ... Rc3+ 2. Kxc3 Rxb7 3. Ra1 g1=Q > 4. Ra5+ Qc5+ 5. Kd3 Qxa5 6. Kd4 Qd2+ > 7. Kc5 h3 > (3) 9-> 2.22 -25.54 1. ... Rc3+ 2. Kxc3 Rxb7 3. Ra1 g1=Q > 4. Ra5+ Qc5+ 5. Kd3 Qxa5 6. Kd4 Qd2+ > 7. Kc5 h3 > 10 2.28 ++ 1. ... Rc3+!! > (2) 10 2.76 -Mat29 1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1 > 4. Rxg2 <HT> > (4) 10-> 5.81 -Mat29 1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1 > 4. Rxg2 <HT> > (3) 11 6.94 -Mat29 1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1 > 4. Rxg2 <HT> > (4) 11-> 20.92 -Mat29 1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1 > 4. Rxg2 <HT> > (3) 12 22.80 -Mat28 1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 h3 > 4. Ra1 g1=Q 5. Ra5+ Qc5+ 6. Rxc5+ <HT> > 12 45.97 -Mat26 1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+ > 4. Kxc3 <HT> > 12-> 1:09 -Mat26 1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+ > 4. Kxc3 <HT> > 13 1:34 -Mat26 1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+ > 4. Kxc3 <HT> > (4) 13-> 3:34 -Mat26 1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+ > 4. Kxc3 <HT> > (3) 14 4:10 -Mat26 1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+ > 4. Kxc3 <HT> > time=60:01 cpu=201% mat=-6 n=1997089692 fh=99% nps=554k > ext-> chk=982088492 cap=1699772 pp=7904550 1rep=95009627 mate=2916 >26 > predicted=0 nodes=1997089692 evals=35885390 > endgame tablebase-> probes done=630737 successful=155980 > hashing-> trans/ref=56% pawn=99% used=-70% > SMP-> split=1410 stop=156 data=10/32 cpu=121:12 elap=60:01 >Black(1): > >6+ billion nodes. And nothing. > >It sat from 4:10 to 60:01 looking at Rg3. This is a really interesting position for that reason. We could call it "the ugly mate spawning factory" because the pretty ten move mate is a real tussle to find, and the ugly ones fall out like virulent pustules of contamination. ;-) In 5 years, this great horror will go away. That's because wonder engines like Chest will be fast enough to solve problems like this on one of the free cpu chips from the cluster on the wafer in your computer. For now, we'll just have to suffer it, unless Paul tells us his secret. ;-)
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