Originally posted by wormwoodIf what you are saying is true (I wouldn't try it in case my high ratings were nuked) then the sites at least check the games in some way. How else would you have especially on playchess XYZ was using computer assistance and their rating got deleted?
I've heard this rumour many times with slightly different 'function', but I seriously can't see how it could be true. because a) it would be ridiculously inefficient and random, b) extremely invasive, possibly illegal, and c) there's a mundane explanation for running engine simultaneously with blitz client: blitzing while analysing past games.
one of the ...[text shortened]... based on what has been found to work in practice, rather than a calculated coefficient.
I've certainly had ChessBase running at the same time as I've been playing blitz on playchess.com, but I don't think I've ever had the kabitzer (Fritz 5?) turned on at the same time.
Someone told me that when a cheat is detected, all that happens is that their rating is reset, i.e. they are allowed to continue playing on the site.
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Originally posted by wormwoodPresumably the 30s allows the engine to reach a "sensible" search depth regardless of hardware. If that is so, what is a reasonable search depth? Should it depend on engine?
on the 30s question, I think it's just an educated guess, based on what has been found to work in practice, rather than a calculated coefficient.
I ask because I have two engines that reach wildly different depths in 30s. One reaches a depth of 14 on average while the other only reaches 10 or 11 and yet they are approximately the same strength.
Originally posted by Kepleryeah, they're not equal because their pruning algorithms differ. all of them skip moves except in 'mate search' mode, so it's not like equal depth counted for equal coverage over search space.
Presumably the 30s allows the engine to reach a "sensible" search depth regardless of hardware. If that is so, what is a reasonable search depth? Should it depend on engine?
I ask because I have two engines that reach wildly different depths in 30s. One reaches a depth of 14 on average while the other only reaches 10 or 11 and yet they are approximately the same strength.
crafty typically searches deep, while fritz & rybka search more shallow. and as we know how those three relate to each other in strength, depth obviously can't be the way to measure 'reasonable depth'. same goes for node count. time is not much better, as the processing speed of hardware differs from dozens to hundreds of times from each other. but at least it's intuitive for humans, and has a straightforward connection to how long analysing a full game takes.
Originally posted by sh76Please, let me know how can I use Chessmaster GM edition for game analysis? I hae this program, but I can't figure out how to properly use it other than try to play the tourneys.
... So, for the heck of it, I took a game that I recently finished:
Game 5599012
and I matched it up against Chessmaster: GM Edition.
After leaving the "book" (according to CM) there were 27 more moves. Of those, I got:
- 11 first choice matches
- 10 more top 3 matches
- 6 moves not in the top 3
That gives me 21 out of 27 top 3 matches, or 77.77%; Gee, that ratio sounds pretty high... even to the level of suspicious. no?
...
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Originally posted by GuychUnder "training mode" (It's the first option on the left when you click the middle icon from the front screen), click on the "mentor" drop down menu on the top of the screen. Then, go to "mentor lines." It will show you the top x moves (you choose) from any position.
Please, let me know how can I use Chessmaster GM edition for game analysis? I hae this program, but I can't figure out how to properly use it other than try to play the tourneys.
Back to sh76's original question.
If the RHP/Zogby poll of dead masters has P=.8, where P is the probability of agreeing with CM on any one non-book move, then an honest player will agree with CM on 21 or more moves of 27 about 71% of the time. However, if the poll has P=.6, then sh76 is just too good, and I'm filing a fairplay ticket.
All depends on P. Where are the cheat police getting their P? What's the sample size and who's in it? Is P different for different engines, and, if not, should it be? How does P vary when the 30-second rule is relaxed, and does it matter?
Originally posted by sh76Thank you.
Under "training mode" (It's the first option on the left when you click the middle icon from the front screen), click on the "mentor" drop down menu on the top of the screen. Then, go to "mentor lines." It will show you the top x moves (you choose) from any position.