Author: Francis Monkman
Date: 06:36:38 05/21/99
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On May 21, 1999 at 02:28:16, pete wrote: >Here the winboard engine crashed but it was clear from the previous move lgg >intended c4 which is a clear win. But if you check the lines with lgg you will >see : from move 3 to 6 for example lgg judges the position as completely even; >then it buries its rook on a8 and for many moves has no idea to form a winning >plan; in fact it was a much closer match than I expected :) > >Pete Buries a rook?? Musta been dead anyway... You say: "for many moves has no idea to form a winning plan", and this in a sense proves my point "Computers, however strong, are not really playing chess", which is essentially about planning. I'm not surprised that Hiarcs, on playing the pos, finds the harder way to die (this line is given in Smyslov's notes, although he has 4. (really 22.) ...Ke7 Rxh7 [which is better after 4. ...Ke6 as well, and then, really, Black has no 'useful moves' to make -- FM] Ke6 Rf8+- (Sm). At this point computers show only a slight advantage to White. (I'm quite unsurprised that LGG 2.0 fares no better (maybe worse) than other machines in this kind of endgame position.) Whereas I'm quite sure that GMs would see the position even before Nxf6! as 'won for White'. PS If Bob comes along and says "Ah, but LGG 2.0 chose the move Nxf6! for the 'wrong reason'", I'd point him to the other guy (sorry, can't remember who!), who said "short of mate, there can never be a right reason", with which I tend to agree. Also fair to say that LGG 2.0 predicted the text line for as long as I watched it, but as I say, Smyslov has foreseen all eventualities... PPS Bob, Crafty 16.6 did *exactly* what you were talking about, the very next time I powered it up. It chose a move I played 'because I liked it' (while there was an objectively stronger move to be played) and clung to it (with !!) for 10 minutes -- which has endeared it to me greatly! (I'll send you the pos, if you'd like, you'll have to laugh...) Francis
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