Author: Tony Werten
Date: 09:53:29 03/31/01
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On March 31, 2001 at 09:22:57, Ferdinand S. Mosca wrote: >Hi everyone, > >A position from an actual game which caught my interest while >playing an engine match at G60. > >[D]3r4/5k2/5p2/6pp/5p2/1p6/p2R4/K3R3 b - - 0 1 >Is there any program that can evaluate this simple ending logically. > >The trap here is the move ...Rxd2, this may not win but it only draws. >There is perpetual check and stalemate if black plays ...Rxd2. Many programs >probably find the perpetual coming, but at what time do your favorite programs >give a 0.0 or near 0.0 score? Are you sure ? Result of XiniX: (running in kind of debug so it's even slower than normal ) 18/34 35,825 565s 125 Kn/s 1. .. Rxd2 2.Re7+ Kg6 3.Rg7+ Kf5 4.Rxg5+ Ke6 5.Re5+ Kd6 6.Re6+ Kc7 7.Re7+ Rd7 8.Re1 f3 9.Kb2 f2 10.Rf1 Re7 Blacks 7th move seems to solve the crazy rook-stalemate problem. Tony > >If it finds the perpetual check, which it can find, would a program dare to play >the black side kr+pawns vs. krr? > >This position is actually not a draw but a win by black. >I think ...Rb8 will win or maybe other moves. > >[D]3r4/5k2/5p2/6pp/5p2/1p6/p2R4/K3R3 b - - 0 1 > >Regards, >Dinan
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