Author: Vincent Diepeveen
Date: 18:24:10 09/19/03
Go up one level in this thread
On September 19, 2003 at 16:58:05, Peter Berger wrote: >On September 19, 2003 at 14:58:53, Vincent Diepeveen wrote: > >>On September 19, 2003 at 11:35:32, Peter Berger wrote: >> >>>On September 19, 2003 at 11:14:29, Vincent Diepeveen wrote: >>> >>>>I'm looking for positions to search very deep with a cpu or 500 which are >>>>interesting to search deep. >>> >>>Why not try the Nolot positions? http://www.seanet.com/~brucemo/nolot/nolot.htm >>>has a survey with results, including the ones of Deep Thought, that still look >>>very impressive. >> >>most of them too easy and they are just tactical. All you need is a beancounter >>for most of the pos. > >Of course, but even with an impressive eval you should be able to solve some of >them on 500 CPUs I suppose. There would be the great additional advantage that >there are other results to compair with. it's a beancounter testset period which is just busy putting opponent mate. all you need is a beancounter with big search depth, mating extensions and some more extensions :) >And positions that take Ferret 93 hours are certainly not trivial. >Another idea would be to use the CSS "Weltmeister-Test" hosted at >http://computerschach.de/test/index.htm. The positions seem to be mostly correct >but they are too easy for hours of search. But a test run at 20min/move should >be possible - and it would allow to compair results with other programs. 20 minutes a move is not what i was after at all. >The problem with the terribly difficult non-tactical ones is that proving they >are even correct is near impossible. I'm not even looking for positions which have a known solution :) >[D]6k1/7p/4r3/R7/3P1bb1/2P3N1/1P3K1P/8 b - - 0 1 Duh another endgame derived from Spanish opening (ruy lopez), Marshall if i may guess :) Though i love the endgame myself i'm sure majority of persons on earth hate endgames. Duh compared to all these boring endgamepositions pasted here with 1 exception that is, helping in 2001 someone into the FIDE world champs with DIEP was a much more interesting task. I have seen near perfect games in those qualifications and that at 25 10 :) >I believe that in this position ..Kf7 and only ..Kf7 wins. Analyzing it I can >prove +6 with Yace after many hours. But to prove that it is the solution and Why was this so relevant for you if i may ask? 2 bishops against a poor knight. Even diep agrees after a few minutes that black is winning. It says at 12 ply here black up 0.279 and that despite it loving passers and white having 3 pawns versus piece so that says enough. >the only one is near impossible - and a program might very well choose it for >the wrong reasons anyway. But I _do_ believe it is correct :). So perhaps i should take some positions from one of the books of one of my friends. Those guys know at least how to keep the attention of readers in contradiction to CCC here :) >Peter >Peter
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