Author: Eelco de Groot
Date: 00:56:10 02/15/01
Go up one level in this thread
On February 14, 2001 at 01:39:23, Jeremiah Penery wrote: >On February 13, 2001 at 20:43:07, Joshua Lee wrote: > >>No i am just showing that this isn't tough compared to the others and i think >>there should be a new suite with problems not solved under 1hour but some >>positions are solve in 30minutes with one program and 5 with another.... > >I think it would be really neat if someone created a new set of positions to >perhaps replace the Nolot ones. It's known that a couple of the Nolot solutions >are at least slightly dubious (#9 being foremost, #3 and #6 might also be, and >it can be argued that the solution to #8 may not be the "best" move). Also >nowadays, at least #11 is too easy for computers to be in a suite of "unsolvable >by computer" problems. > >Maybe if I have the time I'll look for some positions where the solution is >really the best move, provide/find analysis for them, and make sure they're >really hard for computers. > >One position that comes to mind already is Shirov's 47. ...Bh3!! against >Topalov, Linares 1998: >(I hope the diagram is correct.) >[D]8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - > >Computers find this extremely difficult, at the least. :) Are you sure this is the correct position, Jeremiah? Q5T personality for Rebel Century 2.0, only 512Kb transposition tables and 5 more engines in background, me typing and connecting to Internet: 00:00 07.01 3.27 1..Be4 00:02 08.02 3.23 1..Kd6 2.Bxf6 Kc5 3.Kf2 a3 4.Ke3 Be4 5.g4 00:03 09.00 3.25 1..Kd6 2.Kf2 Kc5 3.Bxf6 Kc4 4.Bb2+ Kb3 5.Bd4 Kc4 00:04 09.02 3.59 1..Bh3 2.g3 a3 3.Kf2 Bf5 4.Kf3 Be4+ 5.Ke3 Kd6 00:06 10.00 3.58 1..Bh3 2.g3 Kd6 3.Bd4 a3 4.Kf2 Bf5 5.h5 gxh5 00:11 11.00 2.93 1..Bh3 2.gxh3 Kf5 3.Kf2 a3 4.Ke3 Ke6 5.h5 gxh5 6.Kf4 00:18 11.01 3.49 1..Kd6 2.Bd4 Be4 3.g4 Bf3 00:37 12.00 3.57 1..Kd6 2.Bd4 Be4 3.g4 f5 4.gxf5 00:41 12.01 3.61 1..Bh3 2.Bb2 Kf5 3.g3 Ke4 4.Kf2 Bd7 01:02 13.00 2.91 1..Bh3 2.gxh3 Kf5 3.Kf2 a3 4.Ke3 Ke6 5.h5 01:35 13.01 3.42 1..Kd6 2.Bd4 Bd7 3.Kf2 f5 4.Ke3 03:05 14.00 3.61 1..Kd6 2.Bd4 Be4 3.g4 Bf3 03:09 14.01 3.61 1..Bh3 03:17 14.01 3.93 1..Bh3 2.Kh2 Bxg2 3.Kxg2 f5 4.Kf3 Kd6 5.Kf4+ Kc5 04:07 15.00 4.07 1..Bh3 2.Kh2 Bxg2 3.Kxg2 Kf5 4.Bb4 Ke4 5.Bc5+ 13:31 16.00 4.25 1..Bh3 2.gxh3 Kf5 3.Kf2 Ke4 4.Bb2 The Nolot position No.11 it has a lot more problems with finding the best move!
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