Author: Uri Blass
Date: 01:54:20 01/18/04
Go up one level in this thread
On January 18, 2004 at 04:44:59, martin fierz wrote: >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 It seems additional space prevented diagrams I hope that we can see diagrams now Uri
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