Author: Alexander Kure
Date: 14:18:05 10/20/03
Go up one level in this thread
On October 20, 2003 at 14:52:09, Uri Blass wrote: >Maybe it is lost but in order to be convinced about it I need to see some tree >that convince yace to learn a score of +2.xx for white and I was convinced that >if it can be done it is a task of many hours. > >18...Nd7 is only one option. > >If I look at the scores of Fritz with 5 options I find more alternatives for >black. > >You can see that Fritz8 does not see a winning score for other moves after some >minutes at depth 13 and move 18 is not the only case when white has many >alternatives. > >Rebel - IsiChess MMX >r1b1kb1r/2q2p1p/p2p1P2/2nP4/1p1N4/5Q2/PPP4P/2KR1BR1 b kq - 0 1 > >Analysis by Fritz 8: > >1. µ (-1.09): 18...Nd7 19.Qh5 Ne5 20.Ne6 Qa5 21.Kb1 Bb7 22.Bg2 Rc8 23.Nxf8 >2. ³ (-0.47): 18...Bb7 19.Qe3+ Kd8 20.Nc6+ Bxc6 21.dxc6 Qb6 22.Bc4 Ra7 23.Bd5 >Nd7 24.Qg5 >3. = (-0.06): 18...Bd7 19.Rg7 Kd8 20.Rxf7 Bh6+ 21.Kb1 Bg4 22.Nc6+ Ke8 23.Rxc7 >4. = (0.22): 18...Bh6+ 19.Kb1 Nd7 20.Qh5 Bf8 21.Ne6 Qa7 22.Ng7+ Kd8 23.Qxf7 Nc5 >5. ² (0.37): 18...Qb6 19.Re1+ Kd8 20.Rg7 Nd7 21.Nc6+ Kc7 22.Rxf7 Bh6+ 23.Kb1 Rf8 >24.Ree7 > >(Blass, Tel-Aviv 20.10.2003) > > > > >>You can check all the lines in the Rebel, Tiger or even Fritz books. It is all >>there. > >The fact that the lines in Fritz book lead to win for white is not something >convincing without doubt that white wins but only suggest that white probably >win and it is different. > >I guess that you have no time to check that every case that white probably wins >is a real win and it is better to have more lines in book and not prove that >every alternative is bad for black when you get the impression that every >alternative is bad but saying that it is a clear loss instead of saying that it >is probably losing is wrong. > >Uri Dear Uri, It is not relevant if you need some or more time to convince yourself if this line is really lost for black. Nobody cares! I convinced myself long ago by analysing this line to the bones for more than 15 years! So I will give you as much time as needed to find out for yourself ;-) And I will be glad to hear from you that you found a variation where black does not loose. But as long as you can only show up with "maybe" or "I do not know" I am not interested. Give me some concrete analysis! Greetings Alex
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