Author: Rolf Tueschen
Date: 12:37:59 01/21/03
Go up one level in this thread
On January 21, 2003 at 14:47:06, Ricardo Gibert wrote: >On January 21, 2003 at 09:17:36, Rolf Tueschen wrote: > >>On January 21, 2003 at 09:09:49, Ricardo Gibert wrote: >> >>>On January 21, 2003 at 08:52:02, Rolf Tueschen wrote: >>> >>>>On January 20, 2003 at 23:00:55, Ricardo Gibert wrote: >>>> >>>>>On January 20, 2003 at 21:57:38, Robert Hyatt wrote: >>>>> >>>>>>On January 20, 2003 at 21:32:22, Ricardo Gibert wrote: >>>>>> >>>>>>>On January 20, 2003 at 20:44:21, Robert Hyatt wrote: >>>>>>> >>>>> >>>>>[snip] >>>>> >>>>>>>>Round 6 Crafty vs Searcher >>>>>>>> >>>>>>>>A near disaster for the first game of the second day. The same d4 opening >>>>>>>>led to a similar position, but things did not go very well here. First score >>>>>>>>out of book was -.42, which was typical for every 1. d4 game crafty played as >>>>>>>>white. But it was able to pull that up quickly normally. 10 moves out of book, >>>>>>>>the score hadn't changed, showing that searcher was playing very well and with >>>>>>>>a reasonable amount of understanding of the position. >>>>>>>> >>>>>>>>Finally by move 24, Crafty was back to a slightly + score, and this held until >>>>>>>>it started dropping as it misjudged the queen/rook attacking in the center. At >>>>>>>>move 32, the score was -.68 after 16 plies. at move 35, the score was -1.5, at >>>>>>>>move 40 -2.0, -2.5 at move 50, -3 at move 60, and at this point Crafty dug >>>>>>>>in its heels and pulled the score back to -2.3 where it stayed for a long >>>>>>>>while. But it slowly traded pawns, and the score started swinting back. By >>>>>>>>move 80, it was -2.0 again, -1.5 by move 85, -1.0 by move 95, and it finally >>>>>>>>reported a draw score at move 102. Of all the games it played, this was a >>>>>>>>really nice effort as it showed a lot of understanding about king rook and pawn >>>>>>>>endings, something I have worked on a lot over the years. >>>>>>> >>>>>>> >>>>>>>I find your last sentence surprising. Crafty was very lucky in this game that >>>>>>>Searcherx did not play 62...Re8 62.Kxg3 Rb8 winning easily. >>>>>>> >>>>>>> >>>>>> >>>>>>Crafty says if you play Re8 it just plays Rb7 immediately, not Kg3. >>>>>> >>>>>>Score doesn't change much... >>>>>> >>>>>>It may be overlooking something, but it isn't going to let black get >>>>>>the rook behind the pawn... >>>>>> >>>>>>Maybe we are at the wrong move? IE you have two move 62's above. >>>>>>Do you mean 61. Re8? >>>>> >>>>> >>>>>Yes. 61...Re8 62.Kxg3 Rb8 was my intention. >>>>> >>>>> >>>>>> >>>>>>Going back to move 61, and playing Re8 Kg3 Rb8 I get Rd4 and Rb4. White >>>>>>loses one of the pawns on the h file, but only one. It isn't clear to me, >>>>>>without a lot of study, how black makes progress. The pawn is blockaded, so >>>>>>the black rook is stuck on the b file unless it gives check. The black >>>>>>king can't abandon the kingside or white will eat the g pawn and the hpawn >>>>>>should be enough to force the trade of the rook and a draw... >>>>> >>>>>[D]8/1p1R2pk/5p2/7P/7P/5Kn1/4r3/8 b - - 0 60 >>>>> >>>>>61...Re8 62.Kxg3 Rb8 63.Rd4 b5 64.Rb4 Kh6 65.Kg4 Rb7 66.Kh3 Kxh5 67.Kg3 g6 >>>>>68.Kh3 f5 69.Kg3 Rb6 70.Kh3 Rc6 71.Rb3 Rc4 is a prosaic and convincing win. >>>> >>>>A comparable position is available with many different continuations. One is >>>>your 61-Re8 others I pointed out in >>>>http://www.talkchess.com/forums/1/message.html?278466 >>>>The point is that you always winn with the f/g free pawns if they are so good >>>>combined. No need to know the rule of the R behind the pawns because you give >>>>the b pawn away. >>>> >>>>Kind regards, >>>>Rolf Tueschen >>>> >>>> >>>> >>> >>> >>>Even though it is later given away, it handcuffs the defense giving time to make >>>preparations before giving up the b-pawn to win on the K-side, so it is still an >>>important tool. >> >>No doubt about it. But I was looking for the programmers and you said yourself >>that this is difficult to program. So I had a look at totally normal chess, >>calculable or countable if you like. And this position with the combined pawns >>is won and that is the whole thing. I meant the argument of the "difficult" >>Re8-b8 is even not necessary. > > >Yes! You're absolutely right! See > >http://www.talkchess.com/forums/1/message.html?278672 Uhm, very good message that one! Thanks. I'm happy that I reached the same result for me, admitted with support of Fritz for some calculations. Well that was one of the few games I followed live! I must admit that it's not easy to digest all the information live, also if you consider that at the same time they played at Wijk and I followed these games too. Then I was on ICC for the FIRST time and with all the advertisements and technical difficulties I really had enough in the end. And BOOM I missed these tie off games. What a pity. And I had never IM Schroer. And forgot to install fmchannel. So - I have no idea why I should pay them instead that I get a little support here. <g> Thanks so far. Rolf Tueschen > > >> >>Rolf Tueschen >> >> >>> >>>[snip]
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