Author: Vincent Lejeune
Date: 17:03:24 12/04/03
Go up one level in this thread
On December 04, 2003 at 19:35:52, Jeremiah Penery wrote: >On December 04, 2003 at 18:07:37, Dann Corbit wrote: > >>On December 03, 2003 at 23:50:42, Robert Hyatt wrote: >> >>>On December 03, 2003 at 20:42:57, Jeremiah Penery wrote: >>> >>>>On December 03, 2003 at 19:54:49, Robert Hyatt wrote: >>>> >>>>>On December 03, 2003 at 19:37:13, Jeremiah Penery wrote: >>>>> >>>>>>On December 03, 2003 at 16:22:27, Robert Hyatt wrote: >>>>>> >>>>>>>On December 03, 2003 at 15:54:45, Tord Romstad wrote: >>>>>>> >>>>>>>>On December 03, 2003 at 14:59:03, Robert Hyatt wrote: >>>>>>>> >>>>>>>>>=====================10 seconds per position======================== >>>>>>>>>test results summary: >>>>>>>>> >>>>>>>>>total positions searched.......... 300 >>>>>>>>>number right...................... 299 >>>>>>>> >>>>>>>>That's really impressive, even considering the fast hardware. The last >>>>>>>>time I tried, I got 289/300 at 1 second/position, 293/300 at 3 seconds, >>>>>>>>294/300 at 5 seconds, 295/300 at 10 seconds, and 298/300 at 20 seconds. >>>>>>>> >>>>>>>>The remaining two positions, number 100 and 230, are *never* solved. >>>>>>>>I can let my program analyse for hours, but it still doesn't find >>>>>>>>the solutions. In both positions, it thinks it is winning, but >>>>>>>>never finds the right moves. >>>>>>> >>>>>>>I have gotten 230 in the past, but when I made some passed pawn changes of >>>>>>>some sort, it went away. But even back then it took several minutes to choose >>>>>>>the rook toss... >>>>>> >>>>>>If you compile with the #define DETECTDRAW it will find almost instantly that >>>>>>any move other than Rb4 is a blocked position draw. :) >>>>> >>>>>Have you tried it already? I'll give it a whirl tonight when I get home.. >>>>> >>>>>Although the opteron seems to be down right now. They were installing a >>>>>firewall, so I might be dead until tomorrow. >>>> >>>>Yes, I wrote that code, remember? :) >>> >>>Yes I remembered. :) I was specifically talking about it with respect to >>>WAC 230. I remembered some results from some of those stupid positions >>>with the pawn locked where one side offers a rook that should not be >>>taken. :) >>> >>>I didn't know it also worked on wac 230. >> >>It detects the potential draw, but does not help to solve WAC.230: > >It works fine for me: > >Crafty v19.6 > >White(1): easy >pondering disabled. >White(1): epdlrec wac.epd 230 >Black(1): analyze >Analyze Mode: type "exit" to terminate. > clearing hash tables > time surplus 0.00 time limit 22.50 (3:30) > depth time score variation (1) > 1 0.00 -2.91 1. ... a4 > 1-> 0.00 -2.91 1. ... a47 > 2 0.00 -- 1. ... a4 > 2 0.00 -0.01 1. ... a4 2. Ba3 > 2-> 0.00 -0.01 1. ... a4 2. Ba3 > 3 0.01 -0.01 1. ... a4 2. Ba3 Bd7 > 3-> 0.01 -0.01 1. ... a4 2. Ba3 Bd7 > 4 0.01 -0.01 1. ... a4 2. Ba3 Bd7 3. Rb1 > 4 0.01 ++ 1. ... Kb5!! > 4 0.01 -2.06 1. ... Kb5 2. Ba3 Ka4 3. Bc5 > 4-> 0.01 -2.06 1. ... Kb5 2. Ba3 Ka4 3. Bc5 > 5 0.02 -2.16 1. ... Kb5 2. Kf4 Rf7+ 3. Ke3 Rf5 4. > Be7 > 5-> 0.02 -2.16 1. ... Kb5 2. Kf4 Rf7+ 3. Ke3 Rf5 4. > Be7 > 6 0.02 -2.03 1. ... Kb5 2. Ba3 Ka4 3. Bc5 Rf7 4. > f3 > 6-> 0.03 -2.03 1. ... Kb5 2. Ba3 Ka4 3. Bc5 Rf7 4. > f3 > 7 0.04 -2.17 1. ... Kb5 2. Kf4 Rh7 3. f3 Rh4+ 4. > Kg3 Rh5 5. Kf4 > 7-> 0.05 -2.17 1. ... Kb5 2. Kf4 Rh7 3. f3 Rh4+ 4. > Kg3 Rh5 5. Kf4 > 8 0.09 -2.20 1. ... Kb5 2. f3 Rf7 3. Ba3 Ka4 4. > Bd6 Bd7 5. Bc5 > 8 0.16 -2.32 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4. > Ba3 Ka4 5. Bb2 > 8-> 0.17 -2.32 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4. > Ba3 Ka4 5. Bb2 > 9 0.21 -2.38 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4. > Rb2 Ka4 5. Kf4 Rh2 > 9-> 0.22 -2.38 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4. > Rb2 Ka4 5. Kf4 Rh2 > 10 0.29 -- 1. ... Rh7 > 10 0.33 -2.21 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Kb5 4. > Ba3 Bd7 5. Kf4 Ka4 6. Bb2 > 10 0.53 -2.25 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Bd7 4. > Rb2 Ka4 5. Bc5 Bc6 6. f3 > 10-> 0.54 -2.25 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Bd7 4. > Rb2 Ka4 5. Bc5 Bc6 6. f3 > 11 0.71 -2.27 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > Kg4 Rxf2 5. Rb2 Ka4 6. Kg3 Kxa3 7. > Rxf2 > 11-> 0.81 -2.27 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > Kg4 Rxf2 5. Rb2 Ka4 6. Kg3 Kxa3 7. > Rxf2 > 12 1.04 -1.99 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7. > Kf4 > 12-> 1.24 -1.99 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7. > Kf4 > 13 1.62 -2.16 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7. > Kf4 Bd7 > 13-> 1.96 -2.16 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > Kg4 Rxf2 5. Rb2 Ka4 6. Rxf2 Kxa3 7. > Kf4 Bd7 > 14 2.45 -- 1. ... Kb5 > 14 2.73 -0.01 1. ... Kb5 2. Rb1 Rf7 3. Ba3 Rf5 4. > f4 Ka4 5. Bb2 Bd7 6. Ra1+ Kb5 7. Kg4 > a4 8. Kh4 Rxf4+ 9. Kh3 a3 > 14 11.86 -1.18 1. ... Rb4 2. cxb4 a4 3. Rb1 c3 4. > Rc1 b2 5. b5+ Kxb5 6. Ba3 bxc1=Q 7. > Bxc1 Kc4 8. Be3 a3 9. Kf4 Kb3 > 14-> 12.04 -1.18 1. ... Rb4 2. cxb4 a4 3. Rb1 c3 4. > Rc1 b2 5. b5+ Kxb5 6. Ba3 bxc1=Q 7. > Bxc1 Kc4 8. Be3 a3 9. Kf4 Kb3 3.Rb1 seems very bad ! how crafty can think it's the best line ? Hiarcs 9, 2 best moves after 2 min : 2b5/8/2kBp1p1/3pP1P1/pP1P4/1pp3K1/5P2/1R6 w - - 0 1 Analysis by Hiarcs 9: 1. -+ (-1.70): 4.b5+ Rxb5 5.Fa3 Rc4 6.Tc1 Rxd4 7.Rf4 Rd3 8.Td1+ Rc4 2. -+ (-2.50): 4.Tc1 b2 5.Txc3+ Rd7 6.Tc7+ Rd8 7.Th7 b1D 8.Th8+ Rd7 9.Th7+ Rc6 10.Tc7+ Rb6 11.Txc8 a3 12.Tb8+ Ra7 13.Te8 Dg1+ 14.Rf3 a2 15.Fc5+ Rb7 16.Te7+ Rc8 17.Te8+ Rc7 > 15 15.01 1/16? 1. ... Rb4 > >It performs identically in game mode.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.