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Up Topic Rybka Support & Discussion / Rybka Discussion / A tale of three endings
- - By TedSummers (***) Date 2008-08-11 09:41
MATE in 4!!

8/8/8/1p2Q3/1k6/1p6/1p6/bK6 w - - 0 7


Human sees it right away, but Default has problems. Dyanmic does a little better, but still not there either.

Analysis by Rybka 3 Human :

1.Qd4+ Ka5 2.Qe4 Ka6 3.Qe6+ Ka5 4.Qxb3 Kb6 5.Qd5 Ka5 6.Qe4 Kb6 7.Qd3 Ka5
+- (4.30) Depth: 2 00:00:00
+- (4.79) Depth: 13 00:00:00 19kN, tb=2

1.Qc7
+- (5.11) Depth: 13 00:00:00 21kN, tb=3
+- (#4) Depth: 13 00:00:00 103kN, tb=5

Analysis by Rybka 3 :

1.Qd4+
+- (4.78) Depth: 2 00:00:00
+- (#27) Depth: 17 00:01:06 18607kN, tb=732

Analysis by Rybka 3 Dynamic :

1.Qd5 Ka5 2.Qd4 Ka6 3.Qd8 b4 4.Qg5 Kb6
+- (3.19) Depth: 2 00:00:00
+- (4.89) Depth: 14 00:00:00 28kN, tb=4

1.Qd4+
+- (5.09) Depth: 14 00:00:00 32kN, tb=5
+- (#6) Depth: 14 00:00:03 824kN, tb=5

http://64.68.157.89/forum/viewtopic.php?p=207417#207417
Parent - - By BigBen (****) Date 2008-08-11 12:01 Edited 2008-08-11 12:09
Hi Ted, I did indeed find the same but then I changed Rybka 3s contempt from 15 to 0 and it found the correct move at once ...CB10 GUI used

Regards

EDIT: I tried again second time around it had probs again????

EDIT2: In the Aquarium GUI there are no problems at all except for the odd Mate in

[Mate in 22+299.78]  d=12  1.Qd4 Ka5 2.Qc5 (0:00.02)
[+5.90]  d=11  1.Qd4 Ka5 (0:00.00)
[+5.78]  d=10  1.Qd4 Ka5 (0:00.00)
[+5.08]  d=9  1.Qd4 Ka5 (0:00.00)
[+5.08]  d=8  1.Qd4 Ka5 (0:00.00)
[+4.91]  d=8  1.Qd4 Ka3 2.Qe4 (0:00.00)
[+4.51]  d=8  1.Qd4 Ka3 2.Qe4 (0:00.00)
[+4.31]  d=8  1.Qd4 Ka3 2.Qe4 (0:00.00)
[+4.11]  d=7  1.Qd4 Ka3 2.Qc3 Ka4 3.Qd3 Kb4 (0:00.00)
[+4.11]  d=6  1.Qd4 Ka3 2.Qc3 Ka4 (0:00.00)
[+4.11]  d=5  1.Qd4 Ka3 2.Qc3 (0:00.00)
[+4.11]  d=4  1.Qd4 (0:00.00)
[+4.11]  d=3  1.Qd4 (0:00.00)
[+4.11]  d=2  1.Qd4 (0:00.00)
Parent - By Arkansaw (***) Date 2008-08-11 12:40
So....does it see Qc7 or not?
Parent - - By InspectorGadget (*****) Date 2008-08-11 12:42
Mate in 27? :)

Well, maybe it's a matter of, "no need to worry, we will get there eventually". :)
Parent - By Dragon Mist (****) Date 2008-08-11 14:41
Sounds like Vas allright. :-)
Up Topic Rybka Support & Discussion / Rybka Discussion / A tale of three endings

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