Author: Uri Blass
Date: 08:16:33 06/22/01
Go up one level in this thread
On June 22, 2001 at 10:50:01, Robert Hyatt wrote: >On June 22, 2001 at 10:37:18, Vincent Diepeveen wrote: > >>On June 22, 2001 at 10:35:10, Harald Faber wrote: >> >>>On June 22, 2001 at 08:28:01, Vincent Diepeveen wrote: >>> >>>>Hello, >>>> >>>>My dual has searched past few days at next position: >>>> >>>[D]2rr2k1/pp1qnppp/2n1p3/3p4/1bPP3P/1P2RNP1/PB3P2/1BRQ2K1 w - - 0 1 >>>>kasparov-deep blue 1996 bxh7!! >>>> >>>>Here is the result of the current diep version (threats on, recaptures >>>>on, checks on, SE on, etcetera on): >>>> >>>>dual PIII800 150mb hash >>>>01:39:58 0 0 415044900 (74138755) 14 0.468 a2-a3 Bb4-a5 b3-b4 Ba5-c7 Qd1-d3 Ne7- >>>>g6 h4-h5 Ng6-f8 h5-h6 g7-g6 b4-b5 Nc6-a5 c4xd5 >>>>++ b1-h7 >>>>04:59:23 0 0 1234506378 (199255362) 14 0.767 Bb1xh7 Kg8xh7 Nf3-g5 Kh7-g6 Qd1-d3 >>>>Ne7-f5 g3-g4 Kg6-f6 g4xf5 e6xf5 a2-a3 Bb4-e7 c4xd5 Qd7xd5 Re3-e1 Be7-d6 Qd3-f3 >>>> >>>>It is busy 42 hours now to get a new mainline for Bxh7 at 17 ply, >>>>so i guess it has seen more than 10 billion nodes now. >>>> >>>>Score is 0.828 for Bxh7 after 17 hours though and my expectation is that >>>>to get the next PV i need to wait another 40 hours at least, and that the >>>>score hasn't changed too much, and i need my dual now to do other things! >>> >>> >>>So you want to say that you just need a 50x faster machine (or 100x to be safe) >>>that your Diep plays like Kasparow (:-)))) and makes the move in a tournament >>>game? :-) >> >>Deep Blue's score of 0.00 was not correct. >> >>Note that a3 c5 b4 also wins chanceless for white, as proven by Kasparov >>and obvious for any chessplayer. >> >>Nevertheless Bxh7 is a cool shot for white. > >Note that DB's score was a hell of a lot more correct than yours. IE when it >played its last move, it _expected_ Bxh7 and had seen a repetition. Whether the >draw was forced or not, it saw it after a couple of minutes from the move before >where you are searching. How long did it take you to get an idea Bxh7 was >good? Just how well do you compare to DB? Back up one move and let your >program search until it sees Bxh7 for your _opponent_. Then you will begin to >see how deeply they could search. > >You are at the wrong position and it _still_ takes you forever to find Bxh7. It takes him a long time because Diep needs to see that Bxh7 gives an advantage for white and not only repetition. I believe that if you let Diep to search only Bxh7 it can see at least 0.00 at clearly smaller depth. Uri
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.