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Very Hot Topic (More than 25 Replies) The best analysis program? (Read 256624 times)
amza iulian
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Re: The best analysis program?
Reply #118 - 02/28/15 at 10:38:10
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I am not sure about this. If I use octocore FX 8350 1 h sure is better than single core 8h. 
Vass wrote on 06/21/14 at 19:49:49:
Configuring the number of cores, hash size, endgame tablebases support and...pondering on/off and setting the proper use of opening books (if you do match tests between engines) is enough for a start.
For infinite analysis you have to configure maximum hash (irrespective of the engine you use). It means that if your PC has 2048 MB RAM, then your maximum hash size is 1024 MB. For matches between engines it depends on what time control they play. If it's the classical 5' blitz control - 128MB for each engine is enough (reading a big-sized hash file while playing blitz is counter-productive). 256MB hash for each engine is good for matches on 60'+15" time control for example...and so on..
"Large pages" can improve the speed of analysis with 10 to 15 per cents, but not for long (and not every engine can handle them right, too). And besides, you have to be experienced in order to set properly the "large pages" parameters on your PC (if it supports them, of course).
Usually, engines are not good with openings or opening-related positions. That's why their developpers recommend using human-made small opening books (up to 8-15 moves only). Do not rely on proper evaluation of the openings by engines up to the 15th move!
If you let them play in matches on their own, they'll probably start with 1.d4 d5 2. Bf4 Nf6 3.Nc3 Nc6, or similar, all the time.  Grin
...And yes, analysing on one core for two hours is better than analysing on two cores for one hour only.

  
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TalJechin
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Re: The best analysis program?
Reply #117 - 02/03/15 at 16:00:30
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One should use at least one engine from every one of the major 'families' as they all have different kinds of positions where one or two of them 'understand' the positions better than the rest.
  
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Vass
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Re: The best analysis program?
Reply #116 - 02/03/15 at 11:29:51
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My humble opinion: very good for infinite analysis and not so good for the Aquarium's IDeA way of analysis.
Still, my preferred chess engine is Houdini 4.  Wink
  
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Re: The best analysis program?
Reply #115 - 02/03/15 at 00:42:59
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Vass wrote on 02/02/15 at 17:45:26:
The new Stockfish 6 is available for download


Yes, and it's very good! Wink
  
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Vass
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Re: The best analysis program?
Reply #114 - 02/02/15 at 17:45:26
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The new Stockfish 6 is available for download at https://stockfishchess.org/ and at https://stockfishchess.org/download/

It may be a good try for analyzing with it!  Wink
  
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Re: The best analysis program?
Reply #113 - 12/05/14 at 22:34:03
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A few years ago, I found I got a lot of value out of Junior 10. Typically, it provided inferior analysis to Rybka, Deep Shredder, and Deep Hiarcs, but it also offered the most radically different options. Pairing that more aggressive style with careful analysis of the ensuing positions yielded me a number of points in correspondence chess.
  
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Re: The best analysis program?
Reply #112 - 11/08/14 at 04:40:21
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.
Vass wrote on 06/21/14 at 19:49:49:
Do not rely on proper evaluation of the openings by engines up to the 15th move!
If you let [chess engines] play in matches on their own, they'll probably start with 1.d4 d5 2. Bf4 Nf6 3.Nc3 Nc6, or similar, all the time.  Grin

Vass, Your 2.Bf4 reminds me of a new book that is coming out in a few months.
For Black, after 1.d4 d5 2.c4 (or 2.Nf3) it recommends 2...Bf5.

Book: The Liberated Bishop Defence, by Alexey Bezgodov, due 2015-January

http://www.amazon.com/Liberated-Bishop-Defence-Surprising-Repertoire/dp/90569154...
.
  
GeneM , CastleLong.com , FRC-chess960
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Vass
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Re: The best analysis program?
Reply #111 - 09/08/14 at 11:54:31
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bearheart wrote on 09/08/14 at 11:32:41:
Please, pardon  my total ignorance, but how does one run it?  I extracted it after downloading & unzipping, however, when I when to run as administrator I get a DOS window that appears to show only the coders name.  It has been too many decades since I have played with command lines prior to the creation of GUIs.  
Can anyone give me the directions?   
Too old to remember... Embarrassed

Well, bearheart, you need a GUI to run this engine in a proper mode.
If you don't have Chessbase, Fritz, ChessOK Aquarium or alike, you can download a free GUI (for example Arena at http://www.playwitharena.com/ , Scid Vs PC at http://scidvspc.sourceforge.net/ or even my favourite free GUI called ChessX at http://chessx.sourceforge.net/) and install the engine under one of these.  Wink

EDIT: Of course, Rybka Aquarium will do.
  
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Re: The best analysis program?
Reply #110 - 09/08/14 at 11:50:34
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Oh well, never mind.  I figured it out and can use it with my Rybka Aquarium program.   Roll Eyes
  
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Re: The best analysis program?
Reply #109 - 09/08/14 at 11:32:41
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Please, pardon  my total ignorance, but how does one run it?  I extracted it after downloading & unzipping, however, when I when to run as administrator I get a DOS window that appears to show only the coders name.  It has been too many decades since I have played with command lines prior to the creation of GUIs.   
Can anyone give me the directions?   
Too old to remember... Embarrassed
  
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Re: The best analysis program?
Reply #108 - 09/08/14 at 01:41:07
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Vass wrote on 09/04/14 at 16:37:02:
A new candidate for best analysis program: Komodo 8 engine at http://komodochess.com/ is out now.
The developpers promised +50 ELO points for this new engine version. First tests started...
For now, some engine-testers confirm +17 ELO points, though more games are obviously necessary.  Wink


Concurrent with this, the previous versions Komodo 5.1 and Komodo CCT are also now released for free to download at the Komodo Chess website. 

It's great having Stockfish available for free, and now a second opinion that's also free and comparable in strength.
  
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Re: The best analysis program?
Reply #107 - 09/04/14 at 16:37:02
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A new candidate for best analysis program: Komodo 8 engine at http://komodochess.com/ is out now.
The developpers promised +50 ELO points for this new engine version. First tests started...
For now, some engine-testers confirm +17 ELO points, though more games are obviously necessary.  Wink
  
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Michael Ayton
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Re: The best analysis program?
Reply #106 - 06/23/14 at 09:53:26
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I think I’m nearly sorted! (I have the 3-piece Gaviota tablebase supplied with Arena, and just have to download the 4- and 5-piece bases.)

Yes, I remember playing blitz games against loads of engines years ago and as Black they all met 1 d4 stuff with …d5 and …Nc6 (but still usually whupped me!). But all depends on the position, doesn’t it? I’ve recently been looking at 1 e4 d6 2 d4 g6 3 Nc3 a6 4 f4 b5 5 Nf3 Bb7 6 Bd3 Nd7 7 e5 c5 8 Be4 Be4!? (N) 9 Ne4 cd – and here I’ve found engines have made useful suggestions. But in a position like this one – 1 d4 Nf6 2 c4 d6 3 Nc3 Nbd7 4 e4 e5 5 Nf3 g6 6 Be2 Bg7 7 0-0 0-0 8 Be3 Qe7 9 d5 c5 – there’s surely just no point in turning the engine on! 
Your help’s been invaluable, Vass – thanks a lot! I think you should write an online guide on the subject … Smiley
  
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Vass
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Re: The best analysis program?
Reply #105 - 06/21/14 at 19:49:49
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Configuring the number of cores, hash size, endgame tablebases support and...pondering on/off and setting the proper use of opening books (if you do match tests between engines) is enough for a start.
For infinite analysis you have to configure maximum hash (irrespective of the engine you use). It means that if your PC has 2048 MB RAM, then your maximum hash size is 1024 MB. For matches between engines it depends on what time control they play. If it's the classical 5' blitz control - 128MB for each engine is enough (reading a big-sized hash file while playing blitz is counter-productive). 256MB hash for each engine is good for matches on 60'+15" time control for example...and so on..
"Large pages" can improve the speed of analysis with 10 to 15 per cents, but not for long (and not every engine can handle them right, too). And besides, you have to be experienced in order to set properly the "large pages" parameters on your PC (if it supports them, of course).
Usually, engines are not good with openings or opening-related positions. That's why their developpers recommend using human-made small opening books (up to 8-15 moves only). Do not rely on proper evaluation of the openings by engines up to the 15th move!
If you let them play in matches on their own, they'll probably start with 1.d4 d5 2. Bf4 Nf6 3.Nc3 Nc6, or similar, all the time.  Grin
...And yes, analysing on one core for two hours is better than analysing on two cores for one hour only.
  
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Michael Ayton
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Re: The best analysis program?
Reply #104 - 06/21/14 at 10:45:05
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Great news that I don't have to change lots of things! But now I'm a bit confused! First I learn that GUIs like Arena are fine as long as you configure engines properly; next I learn that in most cases I should just leave the defaults as they are! So I'm left wondering what it is I should configure? Is it just cores and pondering, or if not, what else? (What about hash? According to the Houdini site my optimum hash is 1024 MB, but is this for all engines, and how would I change it anyway?)

Under 'Tournament Conditions" I have Hash 128MB, Tablebases On, Ponder On. On individual engines I see all sorts of other things, like pawn hash, PV hash, eval hash, SMP mode, large pages, LMR, null move pruning, and just hope and trust I can leave them all well alone!!

I know what you mean about personal experience in analysis. With opening or opening-related positions especially, mine tells me that intervening to explore a range of plausible moves using human knowledge of what kinds of moves are typically played in a given position is often much better than just switching on Infinite or Demo analysis and sitting back (though you have to be 'objective', which can be hard!). But in these latter cases, are you saying that even on a dual-core PC it's good to try a single-core analysis as well because it actually might be just as good? (I've noticed that on longer time limits, an engine in Demo mode analysing an opening-related position will sometimes play moves that look a lot less 'human' and may not be so good as the moves it plays on a shorter time limit!?)

  
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