Skip to main content

Version 2.03: bug-fix release and chess leagues improved.

 This is a bug fix update mainly based on the detection work of Eric, the main betatester of the program.


  • Opening Lines, shows comments when training.
  • Book Strategie, other wonderful set of pieces created by Ben Citak.
  • Book Strategie B, for regular style board backgrounds by Ben Citak.
  • Book Strategie theme created by Ben Citak to emulate the old style used in the French chess magazine La Strategie in 1938 (also L'Echiquier).
  • Databases, numerical sorting: press Ctrl (Alt or Shift) while double clicking on the header.
  • CTRL SHIFT C (ALT SHIFT C) to copy PGN to the clipboard
  • On the position analysis screen, alternative moves can be analyzed by moving pieces directly on the board.
  • Analysis of a game, option to include analysis of the variations.
  • On any board, ALT-X to play the current position, it is a little different from the utilities menu, only the position is used, but it can be used with any board and with any position on the board.
  • Shift Right mouse on pgn table to show the tree of moves.
  • Select files, option to change from a custom to native in the Configuration window.
  • Eboards can be used in Gaviota endgames training.
  • Eboards can be used in Learn a game training.


  • Added ALT C to copy FEN to clipboard instead of CTRL C in Options/Settings (to fix problem with some screen readers using CTRL C).
  • Director/Graphics elements, left button used to remove all and Del/Backspace to remove the last one, only right button is used to create graphics.
  • Fixed
  • Create your own game/Utilities/Enable engine
  • Promotion with check not render correctly in pgn table.
  • Playing against any engine, personalities dont be saved.


  • Eboards drivers by Graham O'Neill (version 3 to LC)
  • Chess leagues, the number of opponents is free, with a minimum equal to twice the number of those configured to move from one division to another at the end of the season.
  • Language Euskara, all openings are translated, by Ilurdi.
  • Language Euskara by Ilurdi.
  • Language French, updated openings translations, by Eric.
  • Language French by Eric and Lolo
  • Language Chinese by Zoushen
  • Language Polish by Darek
  • Language German by Johannes Bolzano.


  1. Wow. tons of changes !! Special thanks to, "Director/Graphics elements, left button used to remove all and Del/Backspace to remove the last one, only right button is used to create graphics."

    1. I have had to surrender to the evidence that it is more practical that way.

    2. Completely agree. Better this way !! Exploring the other features and it is really nice. Thank you very much Lucas.

  2. Hi
    I load a game and analyse it with the three best variations..
    If I save in a database OK, but if I save in external pgn and then load it, disappear the engine evaluation for the moves of the game...
    Is a bug ?

    1. It is possible when analyzing to save the analysis as variations, and in this case these are exported in the pgn.

  3. In Competition with tutor, sometimes, as a game progresses the engine takes longer and longer to reply and then LucasChess just hangs and it freezes when clicking anywhere. I don't know if this happens when using other engines.

    1. I forgot to mention that the engine in use is Acqua2.

    2. The best option is to change the engine and forget about Acqua2.

  4. When "Play current position" is selected, Chessnut Air cannot be turned on.

  5. Hello, thanks for such an intuitive interface and very complete for, for example, holding chess engine tournaments. One of the options that would be very useful in a world in which sharing, broadcasting, etc. helps to reach more users, would be to add an extension as much as possible to be able to broadcast live tournaments. Without the need to use external software, as these consume many resources. Thanks in advance and very good job, congratulations.

    1. I am sorry, but it is not possible for me to help, as this is technology in which I have no experience.


Post a Comment

Popular posts from this blog

LINUX - First binary version

The first official binary version of Lucas Chess on Linux has just been released. It has only been made possible by the great work done by Laudecir Daniel , choosing and compiling the 67 engines, as well as laying the groundwork so that the binaries can be more widely used and others such as shortcut creation, installation scripts, ...... In addition,  Graham O'Neill  has provided Linux-specific drivers for several digital boards. This version has two limitations : 64-bit Linux OS only. Minimum GNU libc version: 2.26 (ldd --version shows it) Installation has been made as simple as possible: The installer is a .sh file, generated with the  makeself  tool, and can be downloaded from: SourceForge , GitHub The file must be run from a terminal with user permissions only: sh ./ Launches a GUI with very basic options: Install: Installs in LucasChessR folder inside the home user folder. Generates a shortcut in Applications > Games Launch the application at the end

R 1.06 Maia

 This update contains a major improvement with the inclusion of Maia. Maia is a neural network chess engine, created with the purpose of making her movements as human as possible. The Maia creation team has prepared 9 versions, from 1100 to 1900 of elo, and thus they have been included in Lucas Chess. You have all the information about Maia at:

Setting analysis parameters

Since version 2.04, you can change the parameters used by the program to determine whether a move is good or bad and also the elo calculated for an analyzed game. The parameters are as follows: limit_score Default value: 2000 Minimum value: 1000 Maximum value: 4000 Data type: integer Determines the score in centipawns from which the position is considered to be totally won, that the probability of winning is 100%. curve_degree Default value: 50 Minimum value: 1 Maximum value: 100 Data type: decimal percentage Expresses the correlation between the score in centipawns and the probability of winning/losing. It associates -limit_score with 0 and +limit_score with 100. Curve formula created based in  python-chess/Engine/Score/wdl    difmate_inaccuracy Default value: 3 Minimum value: 1 Maximum value: 99 Data type: integer If the difference between the best move and the move made means going