Author: Uri Blass
Date: 04:18:47 08/21/03
Go up one level in this thread
On August 21, 2003 at 07:06:20, Omid David Tabibi wrote: >On August 21, 2003 at 06:12:12, Jouni Uski wrote: > >>[D]8/1p6/1Pp2N1q/p1Ppk2p/P3p3/3PPpPp/3K1P1P/1R6 w - - >> >>From CSS forum: Machine should, within a million hours, be able to find the draw >>in this position (with Ng4+). But Shredder 7.04 found it in one second!! >> > >It is not a draw. The black queen will penetrate into the white cvamp via a6. >For the past year I've been working on endgame blockage detection. I noticed >that Shredder has some very limited form of blockage detection, but it is very >inaccurate, and in many positions I tried, that inaccurate blockage detection >wreaked havoc to the search tree. Wrong It is a draw I also believed that it is not a draw but trying to win it against shredder I got the following game [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "8/1p6/1Pp2N1q/p1Ppk2p/P3p3/3PPpPp/3K1P1P/1R6 w - - 0 1"] [PlyCount "11"] 1. Ng4+ hxg4 2. d4+ Ke6 3. Rh1 Qf8 4. Ke1 Qa8 5. Kf1 Qa6+ 6. Kg1 and black cannot make progress Uri
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