Author: Robert Hyatt
Date: 08:54:08 05/04/04
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On May 04, 2004 at 11:45:20, Tord Romstad wrote: >On May 04, 2004 at 11:29:06, Robert Hyatt wrote: > >>On May 04, 2004 at 10:44:43, Tord Romstad wrote: >> >>>When there is little thinking time left, my engine annoyingly often fails to win >>>KQKR endgames. Are there any simple but effective eval tricks which can help to >>>play such endgames well without searching very deeply? >>> >>>Tord >> >> >>Drive losing side's king to edge of board. That's all I do in Crafty and it can >>mate against the EGTB version with 1 sec per move... > >Yes, but your engine is something like 5 or 6 times faster than mine, you are >running it on hardware which is at least 2 or 3 times as fast as mine, and I >need >to beat EGTBs at 0.1 sec per move ... > >Tord Look back at the CCC archives. When I originally ran this test (it was in response to Amir's claim that winning this was easy when I thought it was very difficult as a human) I was using a pentium pro 200mhz box. I suspect you (today) are far faster than I was back then. I think I was doing 50-60K nodes per second for reference... If you do the king on the edge, winning king close by, I'll bet you can solve this easily, even though my "human" solver says it is hard to do. It really is not much of a challenge to silicon even though it is tough for carbon until you study it and learn to understand the 2-3 special cases that must be handled.
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