Author: Robert Hyatt
Date: 07:13:41 01/23/01
Go up one level in this thread
On January 23, 2001 at 03:59:26, Dusan Dobes wrote: >On January 23, 2001 at 03:46:15, Dann Corbit wrote: > >>On January 23, 2001 at 03:06:53, Dusan Dobes wrote: >> >>>On January 22, 2001 at 15:57:52, Dann Corbit wrote: >>> >>>>>I am interested if "your" engine could resist to play 46.Qe6+ in a blitz game. >>>>> >>>>>[D]6k1/2pq4/5Q2/p2PPP2/1p1P4/8/P6P/7K w >>>>> >>>>>Best wishes, >>>>>Steffen. >>>>> >>>>>[Event "ICS rated blitz match"] >>>> >>>>Phalanx has a time of it: >>>> >>>>[ white, 1 ] >>>>6k1/2pq4/5Q2/p2PPP2/1p1P4/8/P6P/7K w >>>> >>>>6k1/2pq4/5Q2/p2PPP2/1p1P4/8/P6P/7K w >>>> -> increment adds 1440 s to soft time limit >>>> -> soft time limit 3154.28 s >>>> -> hard time limit 41599.9 s >>>> 6 654 112 213089 Qf6-e6 Qd7-f7 Pf5-f6 Pa5-a4 Qe6-c8 Kg8-h7 >>>> Pe5-e6 Qf7xf6 Qc8xc7 Kh7-g6 >>>> 6 -> 0:01.60 305919 0 turns >>>> 7 654 583 1226489 Qf6-e6 ?? >>>> 7 352 742 1585651 Qf6-e6 Qd7xe6 Pf5xe6 Pa5-a4 Pd5-d6 Pc7xd6 >>>> Pe5xd6 Kg8-f8 Pd6-d7 Kf8-e7 Pd7-d8B Ke7xd8 >>>> Ph2-h4 Kd8-e7 >>>> 7 357 762 1623830 Qf6-g6 ! >>>> 7 525 919 1926808 Qf6-g6 Kg8-f8 Qg6-h6 Kf8-g8 Qh6-g5 Kg8-f8 >>>> Kh1-g1 Qd7xd5 >>>> 7 -> 0:10.26 2108193 1 turn >>>> 8 525 1161 2360687 Qf6-g6 Kg8-f8 Qg6-h6 Kf8-g8 Qh6-g5 >>>> 8 -> 0:23.94 4694659 0 turns >>>> 9 525 2935 5710337 Qf6-g6 Kg8-f8 Qg6-h6 Kf8-g8 Qh6-g5 >>>> 9 526 3916 7666834 Qf6-g5 Kg8-f8 Pd5-d6 Pc7xd6 >>>> 9 -> 1:10.73 13328419 1 turn >>>> 10 526 8747 16329005 Qf6-g5 Kg8-f8 Pd5-d6 Pc7xd6 Pe5-e6 Qd7-b7 >>>> Kh1-g1 Qb7-g7 Qg5xg7 Kf8xg7 Pe6-e7 Kg7-f7 >>>> 10 -> 3:58.68 42938008 0 turns >>>> 11 526 40425 71196909 Qf6-g5 Kg8-f8 Pd5-d6 Pc7xd6 Qg5-h6 Kf8-g8 >>>> Pe5-e6 Qd7-b7 Kh1-g1 Qb7-g7 >>>> 11 -> 17:32.80 184157117 0 turns >>> >>>So that's 7.62 seconds to switch to a different move. >>>Phalanx has special knowledge that helps it to see >>>those things quickly. It has huge extensions (like several >>>full plies) on piece exchanges leading to pawn-only endgames. >> >>I had not noticed how quickly Phalanx switched off from Qe6+. I wonder if Qg5 >>is a better choice than e6, which is what all the other engines were choosing. >> >>It has a higher evaluation, but the reported search depth is not great. I might >>let this one run 24 hours just for fun > >Just try if you have a machine available. I cannot do it >as i am about 2000 km away from my computers. I'm now >on a professional training in Helsinki trying hard to >keep attention :-) > >Of course Qg5 is better as black cannot exchange the Q. > >The extension trick should be working anywhere in the tree. >It might give about 4 plies for the Q exchange in this case. > >Dusan the 10 ply PV showed a queen exchange _still_. Just on a different square. But it has the same fatal problem...
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