Author: Howard Exner
Date: 16:19:55 07/19/98
Go up one level in this thread
On July 19, 1998 at 15:41:03, blass uri wrote: > >On July 18, 1998 at 20:28:44, Howard Exner wrote: > >>On July 18, 1998 at 03:52:14, blass uri wrote: >> >>> >>>On July 17, 1998 at 14:02:14, Howard Exner wrote: >>> >>> >>>>Here's what I'm getting in this position: >>>>1. Rxe6 fxe6 2. Bh6 a6 3. Bxa6 Qc7 4. Nxe6 Qc6 5. Bxb7 Qxb7 6. Re1 Qc6 >>>>7. Qf3 Ne5 8. Ng7+ Kd8 9. Qe4 Bf6 10. Nc5 >>> >>>after 7.Qf3 my programs play N7f6 >> >>This move, N7f6 is better than what I proposed. I realize that most the >>computer programs will consider this quite hopeless for white now. But >>just to satisfy my curiousity do you mind if we continue on a bit. >>Does the next set of moves look reasonable to you. >> >>7 ...N7f6 8.Nac5 Rg8 9. Nd3 > >my programs play 7...N7f6 and 8...Rg8 but after Nd3 are not so optimistic like >before. I just played over the Valvo vs Deep Thought correspondence games that were recently posted here on CCC. One of them has a slight similarity to what we came up with in our line. It is the game were Deep Thought's king gets stuck in the middle. Rebel 8 thinks Deep Thought is doing quite but I think it and other programs still have a difficult time in factoring in the weakness of Deep Thought's weak king position. Anyway, I'm not sure what can be concluded by our analysis. Maybe Rxe6 is unsound and maybe it is not that much worse than other alternatives. One thing though is that black is saddled (as is white) with many difficult choices.After Rxe6 fxe6 and Bh6 black's reply a6 was probably best but other moves would also need to be worked out like Kf7 or Nc7 or ... It looks like you like analysing positions on computers. We put together here on CCC a modified version of ECM (Encyclopedia of Chess Middlegames). It has about 800 positions,reduced from the original number of about 1000. It can be downloaded from the ICD download page or from Manfred Rosenthals's site at http://www.geocities.com/CapeCanaveral/Launchpad/2640/exchess.html. The file is called ECM98.zip From the 800 positions I've made my own collection of just under 200. I deleted the ones that chess programs may find too quickly (around 15 seconds or less). If you would like the smaller file I could email it to you. > >Uri > >> >>We've come 9 moves from the original position and part of my assessment on this >>requence of moves is pretty well in line with what Bruce Moreland posted a while >>back that he spoke to Im's and one Gm and they said it was a complicated >>position. So Rxe6 does stir up a hornet's nest. But despite the high eval >>computers give to black for the resulting position the position does have >>that element of an uncastled black king. It is well sheilded by by its pieces >>but how will black undertake anything, given its pieces being preoccupied >>with sheilding the king? That's my reasoning for playing on a bit. >> >>After white plays Nac5 how would your programs autoplay this game out? >>Would they manage to keep building on Black's big material advantage? >> >>If the computers are correctly assessing the position now with the >>black king in the middle then I'll join Bob in saying the move, while >>complicating things, is nevertheless unsound. Ditto for agreeing with >>fca who started this thread. >> >>Also has anyone played the game out using Bh6 or Qa3 as the first move? >>After 9 moves of play in these lines what is the eval? That could save us time >>too as the original intent of this thread was to see if Rxe6 was any >>worse than other first choices. If other first choices were "losing" >>also then perhaps the entire example is the wrong choice, as fca >>originally suggested. >> >>Either way the verdict falls I'm enjoying analysing this position. Puzzles >>have always intiqued me and chess seems to have an unlimited supply of them.
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