Author: Dann Corbit
Date: 16:55:33 07/05/05
Go up one level in this thread
On July 05, 2005 at 19:26:39, Terry McCracken wrote: >On July 05, 2005 at 15:04:13, Eugene Nalimov wrote: > >>On July 05, 2005 at 14:41:42, Dieter Buerssner wrote: >> >>>On July 05, 2005 at 13:37:55, Terry McCracken wrote: >>> >>>>On July 05, 2005 at 13:01:07, Yar wrote: >>>> >>>>>8/7p/4k3/2B5/1P2K3/1r6/8/8 b - - >>>> >>>>Yes it appears to be a draw unless there is something hidden in the position? >>> >>>This is a 6-men position. As far as I know, this particular 6-men TB has never >>>been available from Robert Hyatt's ftp. But Marc Bourzutschky has created all >>>6-men TBs in the chessmaster format. He should be able to give a definite result >>>to this position. He might not read this thread. You should be able to find his >>>email adress by the CCC search engine. >>> >>>Regards, >>>Dieter >> >>C:\Crafty>wcrafty.exe >> >>Initializing multiple threads. >>System is SMP, not NUMA. >>unable to open book file [./book.bin]. >>book is disabled >>unable to open book file [./books.bin]. >> >>Crafty v19.18 (1 cpus) >> >>White(1): tbpath=k:\32;k:\21;k:\41;k:\31;k:\22;f:\33p >>6 piece tablebase files found >>93611kb of RAM used for TB indices and decompression tables >>White(1): 8/7p/4k3/2B5/1P2K3/1r6/8/8 b - - >>1. ... Rb1! 2. Kf4! Kd5! 3. Kg5 Ke4! 4. Kg4! Ra1 5. Bb6 Ra6 6. Bc5! >>Rg6+! 7. Kh3! Kf3! 8. Kh2! Rg2+ 9. Kh3! Rb2 10. Bf8 Rb1! 11. Kh2! >>Kg4! 12. Bg7 Rxb4! 13. Be5! Ra4 14. Bb8 Ra2+ 15. Kg1! Kh3 16. Bc7 >>Rg2+ 17. Kf1! Rg4 18. Kf2! Rg6 19. Bb8 Rg2+ 20. Kf1! Rg4! 21. Bc7 >>Kh4! 22. Bb8 Kg5 23. Kf2 Kf5 24. Bg3 h5! 25. Kf3! h4! 26. Bb8 Rb4 >>27. Ba7! Rb2 28. Bd4! Ra2 29. Bb6 h3! 30. Bc7! h2! 31. Bxh2! Rxh2! >>32. Ke3! Rh4 33. Kd3! Re4 34. Kc3 Kf4! 35. Kd3 Kf3! 36. Kd2 Re3! >>37. Kd1! Re2! 38. Kc1 Rf2 39. Kd1 Ke3! 40. Kc1! Kd3! 41. Kb1! Kc3! >>42. Ka1! Kb3! 43. Kb1 Rf1# >> puzzling over a move to ponder. >> depth time score variation (1) >>Black(1): Rb1 [pondering] >> clearing hash tables >> time surplus 0.00 time limit 30.00 (3:30) >> depth time score variation (1) >> time=0.02 cpu=0% mat=-2 n=113 fh=100% nps=10K >> ext-> chk=0 cap=0 pp=0 1rep=0 mate=0 >> predicted=0 nodes=113 evals=17 50move=0 >> endgame tablebase-> probes=15 hits=15 >> hashing-> 65%(raw) 65%(depth) 0%(sat) 94%(pawn) >> hashing-> 65%(exact) 0%(lower) 0%(upper) >> SMP-> split=0 stop=0 data=0/128 cpu=0.00 elap=0.02 > >A win for Black?! I think White is wrong with its K moves and Bg7?? dropping the >b pawn, after that its lost!? By 12.Bg7 white is definitely lost. Since there is no exclamation point by Bg7, there are several alternatives that are equally good/bad depending upon how you look at it (e.g. for 2.Kf4, that is clearly the best response but for other moves there may not be a single best reply.) >Are you sure there isn't a bug at work here?? Looks fine to me. Omniscient tablebase files often cause magically strange looking moves. I am guessing that analysis will show there is not a better response.
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.