Author: Tony Werten
Date: 08:45:41 04/27/01
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On April 27, 2001 at 11:14:04, Tony Werten wrote: >On April 27, 2001 at 10:40:58, James T. Walker wrote: > >>This position was reached DF/DJ the other day. The behavior of Deep Fritz is >>not unusual for programs with tablebases. That is trying to give away a piece >>to reach the won ending in tablebases. My question is, why do these programs >>think that the piece will be taken? Why would taking the piece be in the PV >>when it is obvious that taking it leads to mate and it is not the best move? If >>it is not expected to capture the piece then what would be the point of the >>move? I'm not talking about later when taking the piece was done because it >>leads to a longer mate than not taking the piece. Programmers? Anyone? > >I have the following pv >6/11 99,865 3s 41Kn/s 1.Rc6 Kb4 2.Rb3+ Ka4 3.Ra6+ Rxa6 > >This means it's a checkmate in 135 ply. If black doesn't take the rook he looses >even faster. At ply 9 it changes to Rc6 Kxc6 cm in 127(meaning Kb4 leads to a faster mate) ply 10: Rc3 Kd4 Kf4 Kxc3 cm in 125 ply ply 10: g4 Kc4 Rc6 Kxd3 cm in 121 ply I'll let it run for a while to see if it comes up with something shorter. > >Tony > >> >>[D]r7/8/5R2/2k5/8/3R1K2/6P1/8 w - - 0 70 >> >>Thanks, >>Jim
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