Author: John Merlino
Date: 22:31:29 12/12/02
Go up one level in this thread
On December 13, 2002 at 00:58:37, Uri Blass wrote: >On December 12, 2002 at 22:09:48, John Merlino wrote: > >>On December 12, 2002 at 21:05:54, Art Basham wrote: >> >>>Yes, I know all the moves are checks... >>>therfore it should be "very easy" to solve..; >>>but why is it that some of the chess programs and engines >>>that I have tested show only 1. Re4+ >>>and that leads to no mate at all...?! >>> >>>Of course, the correct move is Rg4+...etc. >>>regards >>>Art.... >> >>Bugs? >> >>Well, perhaps not. White is 8 points behind in material, and Re4+ leads to an >>obvious draw by repetition. Programs that do not see the mate see this draw as a >>very good outcome given the difference in material. >> >>Rg4+ leads to a long mate (31 plies). Re4+ leads to an easy short draw. All >>other moves lose. Programs that cannot see that far ahead are definitely going >>to choose the draw. >> >>jm > >Not exactly. >programs may choose Rg4+ for material reasons > >Movei can see material advantage with Rg4+ before seeing mate > >3340350 <first : 8 1 121 194761 g7g4 >3340400 <first : 8 30 121 195056 g7g4 >3341010 <first : 8 533 187 300545 g7g4 a4b5 g4b4 b5a5 b4e4 a5b5 f3d4 b5a4 d4e2 >a4b5 e2c3 b5a5 c3a2 a5b5 a2c3 b5a5 c3e2 a5b5 e2d4 b5a4 d4f3 a4b5 e4b4 b5a5 b4h4 >a5b5 h4h1 >3341010 <first : 8 533 187 306401 g7g4 a4b5 g4b4 b5a5 b4e4 a5b5 f3d4 b5a4 d4e2 >a4b5 e2c3 b5a5 c3a2 a5b5 a2c3 b5a5 c3e2 a5b5 e2d4 b5a4 d4f3 a4b5 e4b4 b5a5 b4h4 >a5b5 h4h1 >3341500 <first : 9 533 236 392421 g7g4 a4b5 g4b4 b5a5 b4e4 a5b5 f3d4 b5a4 d4e2 >a4b5 e2c3 b5a5 c3a2 a5b5 a2c3 b5a5 c3e2 a5b5 e2d4 b5a4 d4f3 a4b5 e4b4 b5a5 b4h4 >a5b5 h4h1 >3343100 <first : 9 533 396 662512 g7g4 a4b5 g4b4 b5a5 b4e4 a5b5 f3d4 b5a4 d4e2 >a4b5 e2c3 b5a5 c3a2 a5b5 a2c3 b5a5 c3e2 a5b5 e2d4 b5a4 d4f3 a4b5 e4b4 b5a5 b4h4 >a5b5 h4h1 >3344740 <first : 10 9969 560 962845 g7g4 a4b5 g4b4 b5a5 b4e4 a5b5 f3d4 b5a4 d4e2 >a4b5 e2c3 b5a5 c3a2 a5b5 a2c3 b5a5 c3e2 a5b5 e2d4 b5a4 d4f3 a4b5 e4b4 b5a5 b4b3 >a5a4 b3b4 a4a5 b4b2 a5a4 >3348750 <first : 10 9969 961 1646625 g7g4 a4b5 g4b4 b5a5 b4e4 a5b5 f3d4 b5a4 >d4e2 a4b5 e2c3 b5a5 c3a2 a5b5 a2c3 b5a5 c3e2 a5b5 e2d4 b5a4 d4f3 a4b5 e4b4 b5a5 >b4b3 a5a4 b3b4 a4a5 b4b2 a5a4 > >Uri Is it truly a material advantage that Movei is seeing? Because even after the full mating sequence, White is still down 3 points of material. jm
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.