Author: Uri Blass
Date: 02:31:47 09/26/00
Go up one level in this thread
On September 26, 2000 at 05:00:19, Mark Young wrote: >On September 25, 2000 at 22:28:03, Robert Hyatt wrote: > >>On September 25, 2000 at 15:40:20, Mark Young wrote: >> >>>On September 25, 2000 at 13:48:30, Robert Hyatt wrote: >>> >>>>On September 25, 2000 at 13:21:34, Mark Young wrote: >>>> >>>>>On September 25, 2000 at 09:01:19, Antonio Dieguez wrote: >>>>> >>>>>>hello! >>>>>> >>>>>>I come to ask two things, please... >>>>>> >>>>>>What are the results of the basics endgames KRB vs KR and KRN vs KR, both draws? >>>>>> if it is, there is some exceptions except the obvius? >>>>>> >>>>>>And can someone post some of these mate in n positions with n very very very >>>>>>high? >>>>>> >>>>>>Thanks! >>>>> >>>>>Easy position to win!! >>>> >>>> >>>>This is wrong. _most_ KRB vs KR and KRN vs KR are _drawn_. There are some >>>>wins for the stronger side, and even a couple of wins for the side without >>>>the B/N, but in general these are dead draws. >>> >>>You must not have had your coffee yet today, but the above is known as sarcasm. >>> >>>Thank you for the info on KRB vs KR endings I did not know that. >> >> >>Sorry... I apparently missed the sarcasm. :) >> >>It is amazing that an extra piece can't force a win. And it is more amazing >>that because of this, many programs will evaluate a KRB vs KRPP as winning for >>the KRB, when in reality, the RPP wins or it is a draw, the RB has _no_ winning >>chances. > >:) I thought you would have understood, the point being that even though the >position is a win for the stronger side in this case, what human could win this, >as one minor slip brings the position back to a draw again. The win is so >complex if you look at the mating line, a player would have to calculate all the >move to mate, as positional judgement just fails in positions like this. The distance to conversion is clearly smaller than 100 plies so some small mistakes are not going to prevent white to do the mate. It is clearly that white have to calculate but positional judgement can also help(if you learned winning positions before it can help because you know target positions to go for). It is possible that GM's who learned KRB vs KR can mate at tournament time control against programs with tablebases from this position and I do not know. Uri
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