Author: Robert Hyatt
Date: 13:53:06 07/20/04
Go up one level in this thread
On July 20, 2004 at 16:01:56, Uri Blass wrote: >On July 20, 2004 at 15:41:17, Albert Silver wrote: > >>On July 20, 2004 at 11:23:30, Robert Hyatt wrote: >> >>>There was a bug. The "time_limit" variable is not correctly set before calling >>>Preevaluate(). However, since you are using very slow hardware, this time limit >>>would be wrong if it were correctly set. I've removed the limit check so that >>>this is always done, which will cure this. No idea why the limit check was even >>>in there in the first place, except to let it determine for itself whether the >>>capture is safe, given enough time and good hardware. >> >>I can't say this makes things clear to me at all. It might explain why the hxg5 >>was played in his game, but what about in infinite analysis? Wouldn't it stop >>playing hxg5 at *some* point? Koch's analysis suggests it doesn't. >> >> Albert I didn't run it that long. But I have seen this position arise where it could take a _deep_ search to refute the capture when the computer's side has some delaying moves to toss in. Best to just not take, period, which is what normally will happen. > >It is only tactics > >Movei avoids hxg5 and Ne8 at tournament time control on A3000 > >Some analysis > >depth=12 +0.96 h6g5 h4g5 f6e8 d1h5 g7g6 h5h6 e8g7 h3f4 g7h5 f4h5 g6h5 h1h5 >Nodes: 8488293 NPS: 526569 >Time: 00:00:16.12 >depth=13 +0.07 h6g5 h4g5 f6d5 d1h5 f7f5 f1c4 e7b4 c4d5 e6d5 g5g6 f8e8 h5h7 g8f8 >h7h8 f8e7 h8g7 e7d6 >Nodes: 15552990 NPS: 524022 >Time: 00:00:29.68 >depth=13 +0.08 c7c6 >Nodes: 40615446 NPS: 539883 >Time: 00:01:15.23 >depth=13 +0.26 c7c6 g5f6 e7f6 f1c4 f6h4 h3f4 b8d7 d1g4 h4g5 c3e4 g5f4 g4f4 d8a5 >e1f1 e6e5 >Nodes: 55753710 NPS: 541982 >Time: 00:01:42.87 >depth=13 +0.36 c7c5 g5f6 e7f6 d4c5 d8a5 f1c4 a5c5 d1g4 c5b4 g4e2 f6h4 h3f4 h4f6 >e3e4 f6c3 b2c3 >Nodes: 70930870 NPS: 544658 >Time: 00:02:10.23 >depth=13 +0.37 b8d7 >Nodes: 91264339 NPS: 549685 >Time: 00:02:46.03 >depth=13 +0.49 b8d7 g5f6 e7f6 f1c4 f6h4 d1c2 g8h8 g2g3 h4e7 h3f4 d7f6 f4h5 f6d5 >c2e4 >Nodes: 110982726 NPS: 552895 >Time: 00:03:20.73 > >After hxg5 > >depth=12 -0.07 h4g5 f6d5 d1h5 f7f5 f1c4 e7b4 c4d5 e6d5 g5g6 f8e8 h5h7 g8f8 h7h8 >f8e7 h8g7 e7d6 >Nodes: 12312514 NPS: 530711 >Time: 00:00:23.20 > >depth=13 +0.00 h4g5 f6h7 d1h5 f7f5 h3f4 h7g5 h5h8 g8f7 h8h5 f7g8 >Nodes: 25049399 NPS: 542077 >Time: 00:00:46.21 >depth=14 +0.57 h4g5 b8d7 h3f4 g7g6 g5f6 d7f6 d1f3 g8g7 f3h3 f8h8 h3h8 d8h8 h1h8 >g7h8 f1c4 c8d7 >Nodes: 181299578 NPS: 557398 >Time: 00:05:25.26 > >Uri
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