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Subject: Re: pawn endgame position

Author: Dusan Dobes

Date: 00:06:53 01/23/01

Go up one level in this thread


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.

Dusan



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