Author: Mogens Larsen
Date: 07:05:42 12/19/00
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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). 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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