Book Information in the Arena Main Window

As an alternative to the move list you see here book information.

[book-mainwindow.bmp]

Explanation:

  • Move: Yes, the move stored in the book!
  • Prio: Priority. This is used to adjust the playing probability by the user. If you do not like the
  • move at all, you may set the priority to "0". Default priority is "5".
  • Games: The number of games in the book played with this move. Set if you imported games
  • from a PGN file.
  • Win % : Percentage of won games.
  • Play %: Probability of playing the move for the chess engine. This is a relative value. Set
  • this value in a relation to the sum of all probability values of all moves to get the percentage the move is played.
  • Line: ECO Code and name of the variation
  • Book: Name of the book.

The playing probability are set by the factors priority, number of games, win percentage. The weight of these factors can be set under the dialogue Book arrow Manage under "Move Selection".

You can play a move from the list by double-clicking on it.

If you right-click on a move, the pop-up menu of the book move list appears:

Priority: Set the priority of the move. 0 means the move will never be played. Delete move: Deletes the move and all subsequent variations from the database. Make move: Executes the move on the chessboard. Back: Goes one move back in the current game. Book Management: Opens the Book Management dialogue.

Under the moves list you can see a small statistics for the last book search. It shows if transpositions are on, the time for the last search in milliseconds (ms) and the total number of nodes searched.