Author: Terry McCracken
Date: 08:12:27 11/25/02
Go up one level in this thread
On November 25, 2002 at 11:02:01, Uri Blass wrote: >On November 25, 2002 at 10:48:11, Terry McCracken wrote: > >>On November 25, 2002 at 01:08:27, Uri Blass wrote: >> >>>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 >> >>You rely too much on computers....Qxe7+?? loses for White and Qa6+!! draws for >>White. > >How can you be sure without testing it with computers? > >Yace latest line is > >New position >[D]8/8/8/8/4Q3/6PP/1qp2P1K/1k6 w - - 0 1 > >Analysis by Yace 0.99.56: > >4.Qe4-f5 Qb2-d4 5.Kh2-g2 Kb1-a1 6.Qf5xc2 Qd4-d5+ 7.Kg2-g1 Qd5-g2+ 8.Kg1xg2 > = (0.00) Depth: 17 00:18:04 397608kN > >(Blass, Tel-aviv 25.11.2002) > >Uri Yace is Wrong You are Wrong!
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