Author: Robert Hyatt
Date: 06:47:00 09/27/01
Go up one level in this thread
On September 26, 2001 at 13:46:12, Koundinya Veluri wrote: >On September 26, 2001 at 10:20:00, Robert Hyatt wrote: > >>On September 25, 2001 at 07:01:52, Uri Blass wrote: >> >>>On September 25, 2001 at 06:58:07, Uri Blass wrote: >>> >>>>The champion seems to be little goliath >>>> >>>>It does not want to tell me information at depth 1 but it does not see a forced >>>>mate based on it's score and even if it can see 8 queens the positional score is >>>>more than 200 pawns. >>>> >>>>Goliath Light 1.5 - Blass,U >>>>8/8/PPPPPPPP/8/8/4K3/8/4k3 w - - 0 1 >>>> >>>>Analysis by Goliath Light 1.5: >>>> >>>>1.h7 >>>> +- (290.17) Depth: 4/4 00:00:00 >>>>1.h7 Kf1 >>>> +- (292.17) Depth: 4/4 00:00:00 >>>>1.h7 Kf1 >>>> +- (292.17) Depth: 4/5 00:00:00 >>>> >>>>(Blass, Tel-aviv 25.09.2001) >>>> >>>>Here is another anlaysis by goliath light >>>>goliath light claims that it can see mate in 307 but unfortunately does not give >>>>the full 613 plies >>>> >>>>Goliath Light 1.5 - Blass,U >>>>8/7P/PPPPPPP1/8/8/4K3/8/5k2 w - - 0 1 >>>> >>>>Analysis by Goliath Light 1.5: >>>> >>>>2.h8Q >>>> +- (290.17) Depth: 4/4 00:00:00 >>>>2.h8Q >>>> +- (#6) Depth: 4/4 00:00:00 >>>>2.h8Q Kg1 3.g7 >>>> +- (292.28) Depth: 4/4 00:00:00 >>>>2.g7 >>>> +- (#307) Depth: 4/4 00:00:00 >>>>2.g7 Ke1 3.h8Q Kd1 >>>> +- (#307) Depth: 4/4 00:00:00 >>>> >>>>(Blass, Tel-aviv 25.09.2001) >>>> >>>>Uri >>>I downloaded another engine and downloaded goliath again. >>> >>>I give goliath to analyze again the same position >>>It can now see mate in 313 with another move and the score improves to mate in >>>312 >>>Goliath Light 1.5 - Blass,U >>>[D]8/7P/PPPPPPP1/8/8/4K3/8/5k2 w - - 0 1 >>> >>>Analysis by Goliath Light 1.5: >>> >>>2.h8Q >>> +- (290.17) Depth: 4/4 00:00:00 >>>2.h8Q Kg2 >>> +- (292.17) Depth: 4/4 00:00:00 >>>2.d7 >>> +- (#313) Depth: 4/4 00:00:00 >>>2.d7 Kg2 >>> +- (#313) Depth: 4/4 00:00:00 >>>2.c7 Kg2 >>> +- (#312) Depth: 4/4 00:00:00 >>> >>>(Blass, Tel-aviv 25.09.2001) >>> >>>Uri >> >> >>That is broken of course. There are no such mates in the 3-4-5 piece >>tablebases. > >Just a guess, but it could be trying to promote a pawn to a queen, force the >king to kill the queen, promote another pawn, get that queen killed, etc. until >the position is in the tablebases. > >Koundinya That could happen, but there are no mates in 300 in the 3-4-5 piece tablebases. Nothing close to that in fact... All the mate scores fit in one byte, which means mate in 127 or mated in -128 are the largest scores you will _ever_ get from the 3-4-5 piece egtbs.
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