Author: Uri Blass
Date: 12:21:26 09/16/01
Go up one level in this thread
On September 16, 2001 at 15:19:10, Uri Blass wrote: >On September 16, 2001 at 14:29:45, Peter Berger wrote: > >>On September 16, 2001 at 09:02:20, Uri Blass wrote: >> >>>On September 16, 2001 at 07:52:45, Peter Berger wrote: >>> >>>>3.) I suspect many programs will see the possible draw after a long search - >>>>1.Qf2 should be just as good as 1.Qf1. >>> >>>I am not sure about it. >>> >>>After Qf2 black can play Ng4 and not Nxe4. >>>Fisher suggested also Ng4 in the book but the difference is that >>>after Qf1 Ng4 the queen does not need to move. >>> >>>Deep Fritz also found Qf2 but later prefered Qf1 because >>>it did not like Qf2 Ng4. >>> >> >>Let's have a look: >> >>1.Qf2 Ng4 >> >>a.) The defensive experiment: >> >>2.Qe1 Ne5 3.Rf4 >> >>Very difficult to judge - probably better for black. >> >>b.) The endgame experiment: >> >>2.Qf3 Ne5 3.Bxc3 Qxe4 4.Bxe5 Qxe5 >> >>Looks won for Black. >> >>As 1.Qf1 Nxe4 is won for White I agree that 1.Qf1 is better than 1.Qf2. >> >>But the major quality of Ng4 doesn't seem to be the tempo here anyway but the >>much better square for the knight,so how about >> >>1.Qf1 Ng4 >> >>I wasn't able to find anything leading to a major advantage for White - looks >>pretty even - I can't look at "60 memorable games" - is this line covered? > >Yes >19...Ng4 20.Bxc3 Qb7 21.Qf4 is the proposed line in the book. >I did not analyze this line to check if 19...Ng4 is the best move. > >I know that Fisher had errors in his analysis later in the game(he was probably >wrong to believe that 20.a3 is losing) so I do not assume that fisher is right >without checking it for hours by a computer. >> >>I don't think it is a really good testposition - the programs get Qf1 sooner or >>later but not for the right reason ( look at Yace's eval - just like Fritz). > >At least they can see positive evaluation of 0.03 so they believe that Qf1 is >better for white. Correction. Yace found 0.04 pawns and not 0.03 pawns based on Dieter's post. Uri > >Uri
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