Author: Sune Fischer
Date: 17:09:06 04/07/04
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On April 07, 2004 at 18:52:37, Dieter Buerssner wrote: >On April 07, 2004 at 17:42:07, Dieter Buerssner wrote: > >>Phantastic by Patzer. I wonder, what magic he is doing here. I first thought, >>very aggressively extending pawn endgame positions (when the root position is >>not a pawn endgame) should help. But it is still rather deep, when the Qs are >>already from the board. Very impressive. > >Seems to work to aggressively extend pawn endgames. I added about 4 lines of >code to Yace. When the root position is not a pawn endgame, and the current >position is a pawn endgame, extend 1/2 ply. This is additionally to some other >extension I already have, when trading down to a pawn endgame. Now I get: Wow it really works. I couldn't solve the positions you posted, they are really deep, too deep for frenzee even with this extension. You must have some good eval on the leaves too. However I then tried fine70 and got a +9 score in 7 seconds! 19 00:00 2,00 Ka1b1 Ka7b7 Kb1c1 Kb7c7 Kc1d1 Kc7d8 Kd1c2 Kd8c7 20 00:01 2,00 Ka1b1 Ka7b7 Kb1c1 Kb7c7 Kc1d1 Kc7d8 Kd1c2 Kd8c7 21 00:01 2,00 Ka1b1 Ka7b7 Kb1c1 Kb7c7 Kc1d1 Kc7d8 Kd1c2 Kd8c7 22 00:03 4,00 Ka1b1 Ka7b7 Kb1c1 Kb7c7 Kc1d1 Kc7d8 Kd1c2 Kd8c7 23 00:07 9,30 Ka1b1 Ka7b7 Kb1c1 Kb7c7 Kc1d1 Kc7d8 Kd1c2 Kd8c7 24 05:09 9,31 Ka1b1 Ka7b7 Kb1c1 Kb7c7 Kc1d1 Kc7d8 Kd1c2 Kd8c7 at this point the search explodes from 7 seconds to over 5 minutes. Perhaps not surprising as queens suddenly enter the picture way out a ply ~45 something on the selective lines. Never the less I've never managed to get above 3.5 on fine 70 :) -S.
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