Author: martin fierz
Date: 01:44:59 01/18/04
Go up one level in this thread
On January 18, 2004 at 02:27:35, Kurt Utzinger wrote: >On January 18, 2004 at 01:25:52, Kurt Utzinger wrote: > >>[D]8/8/5pk1/5b2/7K/3R3p/7P/8 w - - 0 1 > >How on earth should White win this position? I see no way >to do this. Some reasons for my assumption: > >1.) >If White at some time takes the h3-pawn with the rook, >the pawn ending is a draw. > >2) >The only try would be to win Black's f6-pawn. But >this can't be done. > >3) >But even in the case that due to some Zugzwang >White wins the f6-pawn, the position still looks >drawn. > >Any counter arguments. >Kurt hi kurt, uri, this is an interesting position. the first thing to note are a couple of theroetically known endgames: -> if white succeeds in winning both black pawns, he wins [D]8/8/6k1/5b2/7K/3R4/7P/8 w - - 0 1 -> however, if he is careless then, he only draws [D]7k/R7/7P/6K1/8/3b4/8/8 w - - 0 1 these two endings are just interesting so i posted them anyway. but they are irrelevant. the relevant ending is if white wins the f-pawn: [D] 8/8/6k1/5b2/7K/3R3p/7P/8 w - - 0 1 this is supposed to be a win in endgame theory AFAIK, and that is the counter-argument to kurt's argument #3 - if white succeeds in winning f6, he will in fact win the game. in addition, the wins of this type of endgame usually are very very deep, so even searching this position to 30 or 40 ply might not be enough to see the win of the h-pawn. if somebody has the KRPKBP tablebase and time to spend he could run the original position over night and se what happens... cheers martin
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.