Author: Uri Blass
Date: 22:08:27 11/24/02
Go up one level in this thread
On November 24, 2002 at 13:22:46, Terry McCracken wrote: >On November 24, 2002 at 10:23:38, Robert Hyatt wrote: > >>On November 23, 2002 at 19:16:23, Jay Hysenbeg wrote: >> >>>On November 23, 2002 at 08:17:02, Terry McCracken wrote: >>> >>>>On November 23, 2002 at 00:32:08, Robert Hyatt wrote: >>>> >>>>>On November 23, 2002 at 00:13:32, Terry McCracken wrote: >>>>> >>>>>>On November 22, 2002 at 23:45:01, Jay Hysenbeg wrote: >>>>>> >>>>>>>[D]8/4p3/4Q3/8/8/k1p3PP/1q3P1K/8 w - - 0 1 >>>>>>>wKh2,Qe6,Pf2,g3,h3/bKa3,Qb2,Pc3,e7 >>>>>>> >>>>>>>is this a problem with my deepfritz7 or does this happen with your df7 too. mine >>>>>>>fails to see that Qxe7 is a loosing line >>>>> >>>>> >>>>>Is it certain Qe7 loses? All I can see is a long series of checks and I don't >>>>>see how black can find a safe haven from them to promote the pawn... >>>>> >>>>>I let Crafty run a while and it says 0.00... >>>> >>>> >>>>Bob White can't lose, I just inserted the [D] to look at the position. >>>> >>>>It looked totally uninteresting. >>>> >>>>Terry >>>chesstiger 15/14 and gambit tiger both see that Qxe7 is losing for white score >>>jumps by 5 pawns >> >> >>Would you post the "losing" line? I don't see how black can ever escape the >>checks. > >Bob I looked at it again and it appears I really underestimated the position! > >After 1.Qxe7+?? ...Ka2!! going to b1 and it really goes down hill for White >quickly! > >I should have seen this...arrghh! getting rusty...."creak"....sigh... > >Terry > >P.S. 1...Kb3 is ok I think but Ka2!! and White will have to resign, Black will >get out of check and promote his pawn. > >Try it yourself, you'll see White starts to lose ground for grabbing the pawn. > >It's a tricky endgame and Fritz 7 is slower than Tiger to spot the loss. >HIARCS 8, Junior 7, Shredder 6 all see a lost position but not straight away. > >Only Tiger spots it instantly! Bravo Christophe! > > >Juni I guess that tiger see is based on evaluation and it may see a wrong win when there is only a draw(I do not know if this is the case). I expect intelligent programs to see that black is better(unless they can see that white can force a draw) but I also expect them not to evaluate the position as +5. As a human I think that only black can win the endgame so the score should be better for black unless I see a forced draw. Uri
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