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Up Topic Rybka Support & Discussion / Rybka Discussion / how do i use deep rybka to analyze my games?
- - By reckone1999 Date 2009-08-08 03:07
i realize to most people here, this seems like a stupid question, but i cannot figure it out. not by googling, or experimentation.

i have my games in pgn format, and would like to use rybka to analyze them.

Please be specific, and i thank you ahead of time.

Parent - - By Mark Mason (***) Date 2009-08-08 07:36

Assuming you have your Rybka engine loaded into Fritz or any other Chessbase GUI (I am not an Aquarium user but many on here can advise about that if you have it), go into the database function (F12) and double click on the game to open it.  You can either then use:

INFINITE ANALYSIS (Menu: Game – Infinite analysis (or Alt-F2)
This puts the program into a special mode where it does not reply when you enter a move but instead simply analyses the position on the board. You can now enter all
the moves of a game and leave Rybka to analyse for as long as you want. The longer you leave it the deeper it analyses. Clicking the same menu or pressing Alt-F2  again switches back to normal game mode.  There is also a button in the toolbar at the top to start and stop infinite analysis.

FULL ANALYSIS  (Menu: Tools – Analysis – Full analysis)
This is a powerful function that not only annotates games in natural language, it also identifies tactical categories and “tries” ie moves which were not played but which are of interest .  The evaluation profile also gives you a clear picture of how the game developed and when decisive mistakes were committed. You can click on any place in the evaluation profile to jumpto that position in the game.   You can call up the automatic analysis for the game loaded on the main screen, but you can also use it in the database window. There you can select several games for analysis. You can stop the automatic analysis by clicking the “Stop” button that appears in the menu bar. These are the options you have:
Calc time: This is the minimum time the program will spend on a move. If it creates variations, the same amount of time is spent on each move of the main line. Naturally, the more time you allocate the better the quality of the analysis.
Threshold: Here you specify when the program should consider a move a mistake. If you enter a high value (e.g. 300 = three pawn units), then only grave blunders will be considered. If you set avery low value the number of “Better is…” commentaries and variations will increase.
Last move: This sets a limit for the analysis. Analysis always starts at the end of the game and goes backward, ending with this move (i.e., “1” = analyse from move 1 of game).
Reference DB: If the program has access to a large database, it can generate some very interesting reference commentary, quoting recent games that are similar to the current one and identifying the novelty in it. Click the “Reference DB” button and show the program which database to use.
Storage: This is relevant when you automatically analyse a number of games from the games list. The program must know whether the annotated games should replace the original entries or if they should be appended as new entries to the end of the database.
Erase old annotations: Should the program add annotations to any that are already present in the game, or should it delete previous annotations and start with a clean game notation?
Verbose/Graphical/Training: Normally the program annotates games with the help of variations and commentary symbols. If “verbose” mode is on it will also include commentary in natural language,
“Training”   - makes it generate quiz questions like “How would the (inferior) move x be refuted?” or “Why didn’t White play x takes y?” These questions come up when you are replaying the game. The program will even set time allowances and award points for training positions.
Side: Here you can restrict the analysis to the player of the white or black pieces, or to the winner or loser.

DEEP POSITION ANALYSIS (Menu: Tools – Analysis – Deep position analysis)
This function is used to analyse a specific position. It is very good for getting deep and detailed analysis of a critical position, and especially interesting for correspondence players. Deep position analysis generates a detailed analysis tree for this position. You can determine how deep and broad the tree should be and what moves should be included or excluded from the analysis.

BLUNDERCHECK(Menu: Tools – Analysis – Blunder check)
This does not provide a full analysis of a game, but simply a tactical examination, one that reveals glaring errors. There are a number of options in the blunder check dialog box:

Hope this helps you analyse your games,

Parent - - By reckone1999 Date 2009-08-09 04:28
i don't have aquarium, i guess i should have said that at the outset, i have the fritz gui.

thank you for your detailed response mark, worked like a charm, i really want to make the most of this software, i paid a pretty penny for it.

i just hope it doesn't kill my computer, i have a dual core, but when it thinks, my cpu is maxed out at 100% i sincerely hope it doesn't hurt my computer, i really need it. lol
Parent - By Uly (Gold) Date 2009-08-09 05:08

> i sincerely hope it doesn't hurt my computer, i really need it. lol

As long as it's not overheating you should be fine.
Parent - By wgs77 (*) Date 2009-08-11 16:12 Edited 2009-08-11 16:15
No need to worry.  I have a Dell M90 laptop with a T7600 Intel Core 2 Duo processor which I sometimes use for some Scientific computing, and sometimes to run my own Tournaments between Rybka and Zappa Mexico II.
I leave it running for months at a time with CPU's at 100%.  I chose a laptop for this purpose, because its power consumption is much lower than a desktop.
Just make sure the laptop is placed on a hard table (as oppossed to a soft bed), and it will be fine.  Also, wipe the table clean frequently (to make sure there is no dust on the table), so that it doesn't get sucked into the fan intake vents at the sides or back of the laptop.

The Intel Core 2 Duo chips can sustain many years of continuous running at 100% CPU.
Parent - By ernest (****) Date 2009-08-10 18:08

> BLUNDERCHECK (Menu: Tools – Analysis – Blunder check)

> FULL ANALYSIS (Menu: Tools – Analysis – Full analysis)

In BLUNDERCHECK, you can check "store evaluation" and you will get the (Rybka) evaluation of each move, which you can then display in the Evaluation Profile window

I don't understand why this possibility is not given in FULL ANALYSIS :-(
Parent - - By Felix Kling (Gold) Date 2009-08-08 11:12
In Aquarium you can mark the games (mark selection in the home-database menu) and then click on game analysis. However, as a trainer I recommend using infinite analysis (independed of the GUI) since you learn something then, the automatic analysis is relatively useless for improving your game play I'd think.
Parent - - By reckone1999 Date 2009-08-09 04:29
as mentioned above, i have the fritz gui, didn't mean to make you waste effort felix, but thank you for taking the time to try and help.
Parent - By Permanent Brain (*****) Date 2009-08-11 19:19
The Fritz GUI also has several automatic analysis features. Just look into the Tools/Analysis... menu, and in the related F1 help infos. I am sure you will find something which suits you.

The other (simple) alternative is the infinite analysis mode in the Game menu, default keyboard shortcut (switch) is Alt-F2. While this is running, you can press [+] and [-] to adjust the number of multi-pv variations. With two variations, you will often quickly see if a particular move is forced: If the eval of the 2nd continuation is much worse. Press [x] to switch between normal calculation and "show threat" calculation. The latter skips the next ply and shows what could happen, if the side to move does nothing. In this mode, you can also jump around in the notation as you wish, or enter variations. The engine will always calculate in the current board position. - Maybe this is sufficient, or make your choice from the advanced functions in the Tools/Analysis menu.
Up Topic Rybka Support & Discussion / Rybka Discussion / how do i use deep rybka to analyze my games?

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