Author: Mark Young
Date: 02:00:19 09/26/00
Go up one level in this thread
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. > > > > >>> >>> >>>> >>>>[d]5k2/2R5/8/5K2/3B4/8/8/4r3 w - - 0 1 >>>> >>>>1.Be5 #50/1 5 Rb1 #50/1 0 2.Rd7 #49/1 0 Rb5 #49/1 0 3.Ke6 #48/1 0 >>>>Rb6+ #48/1 0 4.Bd6+ #47/1 0 Kg8 #47/1 0 5.Kf6 #46/1 0 Rb2 #46/1 0 >>>>6.Rg7+ #45/1 0 Kh8 #45/1 0 7.Ra7 #44/1 0 Rb6 #44/1 0 8.Rd7 #43/1 0 >>>> Rb2 #43/1 0 9.Bc5 #42/1 0 Rc2 #42/1 0 10.Rd5 #41/1 0 Rc3 #41/1 0 >>>>11.Bd6 #40/1 0 Rc1 #40/1 0 12.Rh5+ #39/1 0 Kg8 #39/1 0 13.Be5 #38/1 >>>> 0 Rb1 #38/1 0 14.Rg5+ #37/1 0 Kh7 #37/1 0 15.Rg7+ #36/1 0 Kh8 >>>>#36/1 0 16.Ra7 #35/1 0 Rb6+ #35/1 0 17.Kf7+ #34/1 0 Kh7 #34/1 0 >>>>18.Bf4 #33/1 0 Rb5 #32/1 0 19.Kf6+ #32/1 0 Kg8 #32/1 0 20.Ra8+ >>>>#31/1 0 Kh7 #31/1 0 21.Be5 #30/1 0 Rb1 #30/1 0 22.Ra7+ #29/1 0 Kg8 >>>> #29/1 0 23.Bd4 #28/1 0 Rf1+ #28/1 0 24.Ke6 #27/1 0 Rf7 #27/1 0 >>>>25.Ra3 #26/1 0 Rf8 #26/1 0 26.Rh3 #25/1 0 Re8+ #25/1 0 27.Kf6 #24/1 >>>> 0 Re2 #23/1 0 28.Rg3+ #23/1 0 Kf8 #23/1 0 29.Be5 #22/1 0 Rf2+ >>>>#21/1 0 30.Ke6 #21/1 0 Ke8 #21/1 0 31.Rb3 #20/1 0 Rd2 #20/1 0 >>>>32.Rb7 #19/1 0 Rd1 #19/1 0 33.Rg7 #18/1 0 Rf1 #18/1 0 34.Bg3 #17/1 >>>>0 Rf3 #17/1 0 35.Bd6 #16/1 0 Re3+ #16/1 0 36.Be5 #15/1 0 Rf3 #15/1 >>>> 0 37.Re7+ #14/1 0 Kf8 #14/1 0 38.Rc7 #13/1 0 Kg8 #13/1 0 39.Rg7+ >>>>#12/1 0 Kf8 #12/1 0 40.Rg4 #11/1 0 Re3 #11/1 0 41.Rh4 #10/1 0 >>>>Rxe5+ #10/1 0 42.Kxe5 #9/1 0 Kf7 #9/1 0 43.Rg4 #8/1 0 Ke7 #8/1 0 >>>>44.Rg7+ #7/1 0 Ke8 #6/1 0 45.Ke6 #6/1 0 Kd8 #6/1 0 46.Rh7 #5/1 0 >>>>Kc8 #5/1 0 47.Kd6 #4/1 0 Kb8 #4/1 0 48.Kc6 #3/1 0 Ka8 #3/1 0 >>>>49.Kb6 #2/1 0 Kb8 #2/1 0 50.Rh8# #1/1 0 1-0
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