Tuning Books CTG: By goldminer_ Here is one way to hand tune the book that I have found very successful although it takes some time. Hi, what kind of book is it? Is it an official release from Chessbase or any other kind of commercial or free book? Is it self made? Thanks! AG. To access the latest and strongest HIARCS Chess Opening Books Book in CTG format (24Mb) - for use under PC Windows Chessbase GUIs.
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To do this use the manual add move function in the book window of the GUI. This method of adding moves to the book gives the best control but do not forget that it adds all moves as green play moves. So be sure to go back and remove the green of the move in the losing side of the line. Spend more time on finding winning lines as white, as black you may have to be satisfied with getting the draw in some lines.
Here are the facts about the percentages of White vs. Black wins. I think this data says something about the relative strength of computers over humans. But my point is that in engine chess, the opening impetus is more pronounced for white. As black you should not expect to come out of opening book with a positional advantage very often. Trying to tell someone how to update and tune books is some what a like trying to tell someone how to type on a keyboard.
You can tell them where to put the fingers and what some of the edit keys do, but the only way one learns is by doing. Along the way many mistakes will be made. All right then, so you want to make a opening book from scratch. A one of a kind book that is your own.
A book that in fact can be proprietary. Let me see if I can start you on the right track. Although there are many ways to go about this let me describe the method that I have found to be the most successful.
It Involves a process of development over time. The first thing you will need is a few comprehensive databases of engine games played under rated conditions and times. They can be found in several places on the internet.
Try to get the most current ones all games and all Jan, are available. These are quite large databases; but can just be manipulated by the Fritz 9, 10, 11,12,13 GUIs.
It will probably be to your advantage to look around on the net for the most current game bases. Ok, you now have large game bases of current engine games. Tens of thousands of them. All mixed together; good games, bad games, winning lines and losing ones.
After combining all bases into one master base the first thing you will need to do is a bit of filtering. Bring your master base up on the Fritz GUI and go to filter games. Lets get rid of all games with less than 35 moves.
Set filter for moves, select all, delete, remove deleted games from base. Do the same with the draws, set filter to bring up all draws then select all, delete, remove deleted games. Now open up an empty data base and name it New Book Main Base or something like Blitz Book Games This will be one of two game bases that you will continue to add games to over a period of time.
Go back to the master game base and this time we will do something radical. We are going to take only the games played by the top rated players. Set filter to to Elo and check both and engage.
This will return 40, to 45, games from the highest rated players. Go to your newly created game base and paste these games there. The next thing you will need is a date base of game to be learned. These games should come from the main game base that you just created. My method for choosing the games to be learned by the book is less than scientific but extremely practical. Pick 4 or 5 of the top players of your choice.
Make an empty game base and name it New book Learn or Blitz book learn, whatever you decide to name your book Filter the main book base for Alien wins as white; copy and paste to the new learn book base.
Do the same for Alien wins as black, and so on down the list. What you are doing is taking only these top players winning games and adding the to your book learn file. This will give your fledgling book the playing characteristics of these players.
You are now ready to turn these new game bases into what I call a seed book.
This book will be the starting point for your personal book to be developed from. In the Fritz GUI open a new empty book and name it. Import all games from the main book base that you have created. Go on line and play the book using these book settings. The source code is there for everyone. They don't know how to read the Chessbase opening file format Open source chess engines don't use CTG. They generally use Polyglot or nothing.
I believe it's illegal to embed a proprietary software you need code to parse the CTG file into an open source program. The Polyglot format is really a binary compression of position, moves, weights. For example, it doesn't have the number of games for each position.
Polyglot is designed for computer chess engines, it sits nicely with engine code, but lacks good support for chess GUI. CTG is a more popular format than Polyglot. In the latest versions you can employ either the openings book which is stored locally on your hard disk or the constantly updated LiveBook.
The following description refers to opening books which you produce yourself and which you can store locally on your hard disk.
For that reason the format of the openings book is also described as tree of positions. For openings training a tree of positions offers the following advantages: For any specific position on the board you receive an overview of all the moves which have been played, including meaningful statistics. This way of doing things reliably recognises transpositions of moves.
When you download Fritz an openings book is included. In practice, however, it will frequently be the case that you will want to create for your training your own, thematically organised openings books.
This is something you can manage simply with the chess programs. Basic principles Let us assume that you would like your chess program to play precisely those openings which Magnus Carlsen employs in his own practice. Other areas which can be used for training might be openings books which are based exclusively on predetermined opening systems.
A new openings book 2. A database with the games of Magnus Carlsen, which will serve as the basis for our openings book.