Author: Torstein Hall
Date: 11:01:03 01/29/00
Go up one level in this thread
On January 29, 2000 at 04:27:53, blass uri wrote: >On January 29, 2000 at 03:40:01, blass uri wrote: > >>On January 28, 2000 at 18:06:06, Torstein Hall wrote: >> >>>On January 28, 2000 at 17:57:46, Torstein Hall wrote: >>> >>>>On January 27, 2000 at 17:40:11, blass uri wrote: >>>> >>>>>On January 27, 2000 at 16:25:49, Torstein Hall wrote: >>>>> >>>>>>On January 27, 2000 at 06:44:50, blass uri wrote: >>>>>> >>>>>>>On January 27, 2000 at 05:35:01, stuart taylor wrote: >>>>>>> >>>>>>>>On January 27, 2000 at 02:18:23, Shanti wrote: >>>>>>>> >>>>>>>>>Hi >>>>>>>>> >>>>>>>>>Here it is :-) >>>>>>>>> >>>>>>>>>[Event "?"] >>>>>>>>>[Site "?"] >>>>>>>>>[Date "2000.01.21"] >>>>>>>>>[Round "2"] >>>>>>>>>[White "Soffer, Ram"] >>>>>>>>>[Black "Fritz 6"] >>>>>>>>>[Result "1-0"] >>>>>>>>>[ECO "A06"] >>>>>>>>>[PlyCount "49"] >>>>>>>>> >>>>>>>>>1. Nf3 c5 2. e3 Nf6 3. b3 d5 4. Bb2 Nc6 5. Bb5 Bd7 6. O-O e6 7. d3 Be7 8. Nbd2 >>>>>>>>>O-O 9. Qe2 a6 10. Bxc6 Bxc6 11. Ne5 Qc7 12. f4 b5 13. Nxc6 Qxc6 14. Nf3 Nd7 15. >>>>>>>>>Ne5 Nxe5 16. fxe5 c4 17. Bd4 b4 18. Rf2 c3 19. Raf1 a5 20. Qh5 Qe8 21. Rf6 Qb5 >>>>>>>>>22. R1f3 Rfc8 23. Qxf7+ Kh8 24. Qxe7 Qe8 25. Rxe6 1-0 >>>>>>>>> >>>>>>>>>Bye, Shanti >>>>>>>>> >>>>>>>>>On January 27, 2000 at 00:49:44, Jouni Uski wrote: >>>>>>>>> >>>>>>>>>>thanks Jouni >>>>>>>> >>>>>>>> >>>>>>>>Incredible! simple! instructive! Surely there was luck in it.He just made the >>>>>>>>right efforts, and it turned out very well. >>>>>>>> What were the main mistakes of computer, and what were the main anti-computer >>>>>>>>moves of Ram Sofer? >>>>>>>> We see that fritz abandoned his King, but was 14...Nd7 wrong? after that I >>>>>>>>don't think it would have been easy even for a human as black, but what did he >>>>>>>>do so bad before move 14? >>>>>>>> 21.Rf6!! is the final blow, but wasn't it a bit of luck that such a move >>>>>>>>existed? >>>>>>>> I myself wouldn't have known to have played 15.Ne5.(blocking own bishop and >>>>>>>>doubling pawns etc.but maybe the opening of f-file against weakly defended king >>>>>>>>with so little mobility-made it a sure thing) Was this distinctly >>>>>>>>anti-computer? >>>>>>>> Stuart Taylor. >>>>>>> >>>>>>>I think that 20...Qe8 was the decisive mistake. >>>>>> >>>>>>I think its lost far earlier. How do you improve on 20...a4 21.Rf6 axb3 22.axb3 >>>>>>g6 ( if 22...Qe8 23.R1f3 Ra1+ 24.Kf2 and prettu soon Rh3 and bye bye black. >>>>>>)23.Qh6 Ra2 24.R1f3 and its all over like in the game. >>>>> >>>>>after axb3 axb3 chessmaster prefers Qa6 expecting Rxf7 >>>>>if R1f3 Qa1+ Kf2?? Ra2 >>>>> >>>>>Uri >>>> >>>>Perhaps I was a bit fast. But I think black has it difficult if White improves >>>>the line 20...a4 with 21.Rf3 If now 21...Qa6 then 22.Rh3 wins after 22...h6 >>>>23.Rg3 Kh8 and again 24.Rh6! >>>>So if we go back to the position after 20...a4 21.Rf3 I think its difficult for >>>>black improve. White just has to time his attack after black defence so no >>>>"evil" checks come in from the a line. :-) >>>> >>>>Torstein >>> >>>Whoops, I mixed it up a bit as I forgot the 21..axb 22.axb in between. >>> >>>I think I got it right if I say it like : >>>But I think black has it difficult if White improves >>>>the line 20...a4 with 21.Rf3 If now 21.axb axb 22...Qa6 then 23.Rh3 wins after 23...h6 24.Rg3 Kh8 and again 25.Rf6! >>>So if we go back to the position after 20...a4 21.Rf3 >>>[D]r4rk1/4bppp/2q1p3/3pP2Q/1p1B4/1PpPPR2/2P3PP/5RK1 b - - 0 22 >>> >>>I think its difficult for black improve. White just has to time his attack after >>>black defence so no "evil" checks come in from the a line. :-) >>> >>>Torstein >> >>chessmaster6000(ss=10) cannot see a losing evaluation for black after 21.Rf3. >>The main line begin with 21...axb3 22.axb3 Qc7 23.Rxf7 Qd7 >> >>It now considers h6 for a long time and may changes its mind to h6. >>I do not see a win for white after h6 >> >>I gave it some hours to analyze but it could see axb3 axb3 Qc7 in a few minutes. >> >>Uri > >h6 is the last choice of chessmaster6000 after 4-5 hours. >main line begin with h6 Rxf7 Qe8 > >The line with 21...axb3 22.axb3 Qc7 Rxf7 was not the from the last iteration >It changes the move Rxf7 in this line in the last iteration. > >Chessmaster can see only an advantage of slightly more than 1 pawn for white >both with 21...axb3 and with 21...h6 > >Uri I have not the energy to look at this position again at the moment, but I feel white should win quite easy, just look out for nasty checks at a line. The treath of Rh3, Rg3 and Rf6 etc. forces weak point in blacks position and then soon check mate. And by the way, I feel that whites worst option is to take on f7 with the rook! Torstein
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