Author: Michel Langeveld
Date: 10:43:40 06/23/00
Go up one level in this thread
What version of Crafty is used to produce this analysis? On June 23, 2000 at 13:01:55, Dann Corbit wrote: >Here is WAC.230, for which the "right answer" is Rb4: >[D] 2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - - acd 20; acn 175168255; acs >1000; bm Rb4; ce 247; id "WAC.230"; pv Rh7 Rb1 a4 Ba3 Rh5 Kg4 Kd7 Bb2 Bb7 Ba3 >Ba6 Bb4 Rh7 Ba3; > >But here we are after a4: >[D] 2b5/1r6/2kBp1p1/3pP1P1/p1pP4/1pP3K1/1R3P2/8 w - - acd 21; acn 180101195; acs >1001; ce -321; id "WAC.230 after a4"; pv Ba3 Rh7 Rb1 Rh5 Kg4 Bb7 Ra1 Kd7 Rb1 Kc7 >Kf4 Kc6; > >And here we are after Rb4: >[D] 2b5/8/2kBp1p1/p2pP1P1/1rpP4/1pP3K1/1R3P2/8 w - - acd 18; acn 183859758; acs >1000; ce -233; id "WAC.230 after Rb4"; pv cxb4 a4 b5+ Kxb5 Rb1 c3 Ba3 Kc4 Kf4 >Kxd4 f3 Kd3 Rd1+ Kc2 Rc1+ Kd2 Rh1 c2 Bb2 d4 Bxd4; > >And here we are after Rh7: >[D] 2b5/7r/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 w - - acd 20; acn 174240961; acs >1000; ce -321; id "WAC.230 after Rh7"; pv Rb1 a4 Kg4 Bb7 Bc5 Ba6 Ba3 Rh2 Kg3 Rh5 >Kg4 Kd7 Bc5 Bb5 Rb2 Rh1 Ba3 Rh2 f3; > >It seems from a fairly deep evaluation that the 'aftermath' of both a4 and Rh7 >is worse for white than after Rb4. So the burning question is, is everybody >really positive that they have been getting the wrong answer all these years, or >are we just wearing the emporor's new clothes? >;-) > >Equivalently, are we really sure that a4 and Rb7 are not just as good or even >superior? If not, why not?
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