Author: Vincent Lejeune
Date: 09:10:39 12/19/00
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On December 19, 2000 at 10:05:42, Mogens Larsen wrote: >On December 19, 2000 at 09:24:34, Vincent Lejeune wrote: > >>I've analysed the position some minutes ago : >>White is not forced to take the rook right here but after some moves : >>3..Rh8 4. Kg6 Ke7 5. Kg7 Ke8 6. Kg6 Kf8! and white is in zugzwang (forced to >>push his pawns !) and black can repeat this sequence (5. h3 6.Ke7 7. Kg7 Ke8 8. >>Kg6 Kf8!, analyzed with help of CHessTiger 13.0) >> >>The winning line is very long >> >>A more rational question is : what program find a score > 1 for white in this >>position : >> >>[d] 7r/4k2P/6K1/8/p7/P7/1P5P/8 w - - 0 1 > >Not Gandalf after 30 seconds (Athlon 800, 56Mb hash, no TB's). Gandalf is right , black is winning ! > >Analysis by Gandalf 4.32g: > >1.Kg7 > = (0.10) Depth: 2 00:00:00 >1.Kg7 Ra8 2.h8Q Rxh8 3.Kxh8 > +- (2.17) Depth: 2 00:00:00 >1.Kg7 Ra8 2.h8Q Rxh8 3.Kxh8 > +- (2.17) Depth: 3 00:00:00 >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 > +- (2.17) Depth: 4 00:00:00 >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 > +- (2.06) Depth: 5 00:00:01 2kN >1.Kg7 > +- (2.54) Depth: 6 00:00:01 3kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.h4 > +- (2.54) Depth: 6 00:00:01 3kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.h4 Kf5 > +- (2.49) Depth: 7 00:00:01 8kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.h4 Kg6 5.Kg8 > +- (2.54) Depth: 8 00:00:01 16kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.h4 Kg6 5.Kg8 Kh5 > +- (2.38) Depth: 9 00:00:01 26kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.Kg8 Kf5 5.Kf7 Kg4 > +- (2.35) Depth: 10 00:00:01 45kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.Kg8 Kg5 5.Kf7 Kh4 > +- (2.24) Depth: 11 00:00:01 72kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.Kg8 Kf5 5.Kf8 Kg4 > ± (1.40) Depth: 12 00:00:01 184kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.Kg8 Kf5 5.Kf8 Kg4 > ± (1.40) Depth: 13 00:00:01 281kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.Kg8 Kf5 5.Kf8 Kg4 > ± (1.40) Depth: 14 00:00:03 609kN >1.Kg7 Rf8 2.h8Q Rxh8 3.Kxh8 Kf6 4.Kg8 Kf5 5.Kf8 Kg4 > ± (1.20) Depth: 15 00:00:10 2347kN >1.Kg7 Ke6 2.h4 Ke7 3.h5 Ke8 4.Kg6 Kf8 5.h6 Ke7 > -+ (-2.48) Depth: 16 00:00:30 7950kN >1.Kg7 Ke6 2.h4 Ke7 3.h5 Ke8 4.Kg6 Kf8 5.h6 Ke7 > -+ (-2.43) Depth: 17 00:01:02 15964kN >1.Kg7 > -+ (-2.41) Depth: 18 00:03:15 47167kN >1.Kg7 Ke8 2.h4 Ke7 3.h5 Ke6 4.Kg6 Kd6 5.Kg7 Ke7 > -+ (-2.40) Depth: 18 00:03:15 47167kN >1.Kg7 Ke8 2.h4 Ke7 3.h5 Ke8 4.h6 Ke7 5.Kg6 Kf8 > -+ (-3.82) Depth: 19 00:04:57 72027kN > >Mogens.
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