Author: Michael Henderson
Date: 15:52:45 09/29/04
Go up one level in this thread
On September 29, 2004 at 17:29:57, Stuart Cracraft wrote: >On September 29, 2004 at 16:06:36, Uri Blass wrote: > >>On September 29, 2004 at 14:51:16, Dan Honeycutt wrote: >> >>>On September 29, 2004 at 14:16:23, Stuart Cracraft wrote: >>> >>>[snip] >>>> >>>>WAC 141 takes me a shade over 24,000,000 nodes, a fully completed 7 ply search, >>>>to find Qxf4 with all the above improvements, still the same amount of >>>>time as without: >>>> >>>>Alpha=-1332 Beta=-532 Maxdepth=9999999 MaxTime=1410065407 >>>> 1/11 g2f1 0.00 -953 945 g2f1 f4d5 >>>> g2f1 f4d5 >>>> 2/12 g2f1 0.01 -953 1653 >>>> g2f1 f4d5 c1g5 >>>> 3/12 g2f1 0.02 -953 5073 >>>> g2f1 f4d5 c1g5 d5f6 >>>> 4/20 g2f1 0.09 -953 19924 >>>> g2f1 f4d5 b3d5 c6d5 c1c7 d6c7 f1g1 >>>> 5/22 g2f1 0.71 -953 170357 >>>> g2f1 b5b4 b3a4 f4d5 f6g5 d5e7 >>>> 6/26 g2f1 2.85 -953 617222 >>>> g2f1 b5b4 mtmt >>>> 7/32> g2f1 56.60 -553 13644478 g2f1 e8c8 c1b1 f4d5 b1e4 d6b4 f6e5 c7b6 >>>> g2f1 e8c8 c1b1 f4d5 b1e4 d6b4 >>>> 7/34 c1f4 97.33 5113 24161497 c1f4 e8e6 f4g5 d7e7 b3e6 e7e6 h1d1 d6e7 f6e7 >>>> c1f4 e8e6 f4g5 d7e7 b3e6 e7e6 h1d1 >>>> 8/34 c1f4 115.59 5113 27838968 >>>> c1f4 e8e6 f4g5 d7e7 b3e6 e7e6 h1d1 >>>> 9/34> c1f4 197.37 5513 48705672 >>>> c1f4 e8e6 f4g5 d7e7 b3e6 e7e6 h1d1 mtmt >>>> 9/... still searching >>>> >>>>Stuart >>> >>>Doesn't look like the program has actually found Qxf4. e8e6 is not the next >>>move. >>> >>>Dan H. >> >>The next move is not important >> >>Every move is losing and the question what is the next move in the program pv is >>dependent on extensions. >> >>It is clear that too many extensions were used because the program needs so many >>nodes to finish depth 7 and the selctive depth is too high(depth 7/34). >> >>I believe that the recapture extension that is used is bad if it helps to solve >>the problem at depth 7 with so many nodes but the only test to be sure is games. >> >>Uri >>Uri > >I considered your last point as well and removed RECAP. The problem cannot >be resolved without it after 10+ minutes. With it, it solves at 95 seconds >at ply 7. > >My main search escape-from-checks and quiescence escape-from-checks are >unlimited. > >I do not search checking moves except in main search or unless a move >out of check in quiescence is a checking move. > >Stuart I think there is something wrong with your search. -953 is too large of a losing score for g2f1, it should be around -100 to -300. Can you post the complete variation that leads to this score? with Triangular array you can by not cutting off with a PV entry. h1d1 in the PV looks strange also. Recapture extension should not be helping you here, I believe. I don't think even captures are hiding anything useful. Michael
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