Author: Ed Schröder
Date: 13:25:28 03/07/01
Go up one level in this thread
On March 07, 2001 at 13:59:17, Sune Larsson wrote: > > [D]8/5pP1/1R6/7P/8/k7/p6r/K7 w - - 0 5 > > After Mozes,L 1975 > > This is a rook ending with 2 vs 2 pawns. White is in huge trouble. > True he has two alert passers but he is facing an acute mate threat > on the first rank. The draw is there with 1.Ra6+ Kb3 2.Rb6+ etc. but > is there way to play for win without committing suicide? > After 10 minutes Fritz shows 0.00. War or peace? > > > Test: 1) White to move and play for a win. Find the + evals! > > 2) According to Mr Mozes it's white to move and win. > Is this true? Some positions with KQ - KRP might > easily happen. This is for people who have all the 5 men TB:s. > The original solution further down. > > > Sune > Rebel 27 secs. No win score +1 only, no table bases also. Ed ------------------- Loading... Engine version : Rebel Century 3.1 Hash table size : 60 Mb 8/5pP1/1R6/7P/8/k7/p6r/K7 w - - 00:00:00 05.00 0.00 1.Ra6+ Kb3 2.Rb6 Ka3 [5325] 00:00:01 07.00 0.00 1.Ra6+ Kb3 2.Rb6+ Ka3 [10530] 00:00:02 10.00 0.00 1.Ra6+ Kb3 2.Rb6+ Ka3 [32679] 00:00:02 11.00 0.00 1.Ra6+ Kb3 2.Rb6 Ka3 [64436] 00:00:03 13.00 0.00 1.Ra6+ Kb3 2.Rb6 Ka3 [149518] 00:00:04 14.00 0.00 1.Ra6+ Kb3 2.Rb6 Ka3 [230011] 00:00:06 15.00 0.00 1.Ra6+ Kb3 2.Rb6 Ka3 [276580] 00:00:12 16.00 0.00 1.Ra6+ Kb3 2.Rb6+ Ka3 [351015] 00:00:27 16.02 0.00 1.Rb1 [430912] 00:00:43 16.02 0.79 1.Rb1 axb1=Q+ 2.Kxb1 Kb3 3.Kc1 Rg2 4.h6 [444316] 00:01:12 17.00 0.83 1.Rb1 axb1=Q+ 2.Kxb1 Kb3 3.Kc1 Rg2 4.h6 [448518] 00:02:08 18.00 1.04 1.Rb1 axb1=Q+ 2.Kxb1 Kb3 3.Kc1 Rg2 4.h6 [460860] >Mozes,L >1975 > >1.Rb1 axb1Q+ 2.Kxb1 Kb3 3.Kc1 Kc3 4.Kd1 Kd3 5.Ke1 Ke3 6.Kf1 Kf3 7.g8Q Rh1+ 8.Qg1 >Rxg1+ 9.Kxg1 Kg4 10.h6 1-0 > >What about all the 5 men endings if black takes the h-pawn somewhere? >Are they all won for white?
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