Author: David Rasmussen
Date: 05:38:17 01/07/01
Go up one level in this thread
On January 07, 2001 at 05:08:31, Uri Blass wrote: >On January 06, 2001 at 14:42:45, David Rasmussen wrote: > >>On January 06, 2001 at 12:37:03, David Rasmussen wrote: >> >>>On January 06, 2001 at 10:14:06, Uri Blass wrote: >>>>> >>>>>Chezzz locks on Ne2 after 44 secs on my machine, and it never considers g3. >>>>> >>>>>It hasn't found an especially good score, though. -0.20 for white, so I will let >>>>>it search for a full 10 hours or so. >>>> >>>>Thanks >>>> >>>>I do not say that Ne2 is winning but only that it is probably the only not >>>>losing move so there is no problem with score of -0.2. >>>> >>>>I believe that DB1 could draw the game instead of losing with Ne2 instead of g3. >>>> >>> >>>Chezzz has now searched for 3 hours, and still considers Ne2 best with a score >>>of -0.25 at depth 15 (Chezzz has inferior branching factors, so better engines >>>will search deeper in this time). g3 is not considered as one of the first moves >>>at the root, it is sorted down as move number 6 or so, so there are 4 other >>>moves that Chezzz would try after Ne2 but before g3. >>> >>>I will try to run it after g3, and see what it finds. >> >>I've now run it to depth 14 where the output is this: >> >>14 +0.45 1... Qg5 2. Ne2 Rxd2 3. Qxd2 fxg3 4. Qxg5 gxh2+ >> 5. Kxh2 hxg5 6. Kg3 Be6 7. Nc3 Bf5 >> 8. Nb5 a5 9. Nd4 g6 (506539 kN) >> >>So, the value is 0.45 whereas the value for Ne2 was 0.25 for black. That's not a >>big difference, but at least it never considers g3 seriously. I can't imagine >>why DB would play that. Lousy eval, maybe. Byt lousier than Chezzz?? I don't >>think so... > >It is possible > >Hiarcs7.32 has also worse evaluation than your program. > >It considers g3 as best at the end of iteration 11 with score of -0.70 but I >guess that it is going to see bigger problems with g3 and change its mind to >Ne2. > >My experience with chess programs suggest that all of them are going to see Ne2 >if you give them enough time(I guess that some programs give big bonus for the >passed pawn at e3 after Ne2 Rxd2 Qxd2 Qa1+ Nc1 Qe5 Ne2 e3 fxe3 fxe3 and I >believe that they are wrong). > >Uri Well, this is the line found by Chezzz. It is cut off because of a hashtable hit. -0.25 1. Ne2 Rd3 2. Rxd3 exd3 3. Nd4 Bg6 4. Qc8+ Kh7 5. Qc3 Qe5 6. a3 Kg8 7. Kh1 What do you think about this line?
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.