Wednesday, October 18, 2017

Document in French: Bonus by Max Aloyau

Max Aloyau has added a new document in PDF with information on the novelties introduced this year 2017 in the development version of Lucas Chess.

This document can be downloaded from the program website, section documents.

Or directly from: link 

Saturday, October 7, 2017

Development version 11.00.21b: kibitzers

Changes in kibitzers:

1. Added some options:

  • Priority of the cpu process, normal, low, below low, high,... (vga)
  • Analyzed position, it can be before the move on the board or after the move.
  • Visibility, when you have many kibitzers, some of them can be hidden in the selection menu.

2. Kibitzer options can be changed live.

3. The order in the menu can be changed.

4. To edit:

  • Tools-Engines-Kibitzers
  • When playing, Utilities-Kibitzers-Edit

Bug fixed:
  • Multiple analysis of a position, engines are not reused when external. (vga)

Update from 11.00.21 to 11.00.21a:
  • Bug fixed, kibitzers don´t work (Giovanni)
Update from 11.00.21a to 11.00.21b:
  • Bug fixed, tournaments between engines, "Cancel button" and difference of material doesn't work (Giovanni Di Maria)
  • Bug fixed, database, order is not maintained from a session to other (Max Aloyau)
  • Database, added in Utilities mass analysis option (Marc)
  • New theme, McBrain's Wooden Chess Board " - © 2017 by Michael Byrne , permission granted to Lucas Monge to use in the software "Lucas Chess".
  • Updated some languages:
    • Arabic by Mohamad Alhedhed
    • French by Max Aloyau
    • Polish by Dariusz Popadowski
    • Vietnamese by Toan Luong
Downloads : 

Wednesday, September 27, 2017

Development version 11.00.20a: Lucas Chess moved to pythonanyware

Bugs fixed:

  • Moves via keyboard, c is not working (John)
  • Doesn´t show figurines in Variants.
  • PGN reader when positions with solutions, option Utilities-List of FENS, doesn´t create a FNS file with solutions (Remes).


  • Pawn endings
  • Background color in selected rows  can be changed (Options-Colors-General-Tables). (Remes)


11.00.20 -> 11.00.20a:
# Long analysis of a position, new cancel button (?)
# Depth as an option to tutor (R.Giorgi)
# <enter> to select in PGN reader (Remes)
# Added ALT-J to an screenshot of board (Remes)
# Removed menu.symbols in board to do a screenshot(Remes)

Downloads : 

Friday, September 8, 2017

Development version 11.00.19: Director changed

Bugs fixed:

  • Find best move training, doesn't show correct moves when using a language different from english to show pieces. (Max Aloyau)
  • Order in analysis when score is over 10000 centipawns. (Max Aloyau)
  • Transsiberian, automatic save doesn't include Date field (Pedro José)
  • Challenge 101, bad score when time used is less than 5.0 secs. (Max Aloyau)
  • Transiberian, level 2, error in a tactic. (David Parkin)


  • Database added two tools to change the order of registers (TheIgnobleSavage)
  • Updated McBrain to version 2.7
  • Director:
    • Main change: graphic elements are added directly on the main board.
    • After saving a position the added elements are visible from any other board.
    • It is possible to change the file that has the information, which can facilitate sharing with other users.
    • Can be added text in a blackboard.
    • Activated with F1..F10.
    • A simbol appears in the board when the position has info.

11.00.19 -> 11.00.19a: bug fixed in the panel of results to Compete-Singular moves-Calculate your strength (thanks to Max Aloyau)

Downloads : 

Tuesday, July 11, 2017

Development version 11.00.18: new translation, Ukrainian and a new competition


  • New translation to Ukrainian by Volodymyr Soltys (initiated by Maxym Makarchuk)

Engines updated:


  • Elo perfomance total and in opening, middle game and end game (Eren Külpınar)


  • Automatic save of games,... , thanks to Jacques D
  • some changes in level 1, thanks to Jacques D


  • Position of board configuration icon in Options-Configuration-Boards

New competition:
  • Strength in positions with only one good response (singular move).

Downloads : 

Monday, May 22, 2017

Development version 11.00.17

Bugs fixed:

  • Editing a database game (Bernhard):
    • activating information, disable pieces moves
    • pressing x doesn´t ask toprevent lost of changes.
  • Error creating external engines in folders with cyrillic characters (katl)


  • Added an icon in bottom-left in all boards to config that replace right button in the border.It can be hidden in the Options/Configurations menu/Boards, but menu always appears pressing left button in that area.

  • Analysis graphic window:
    • Added captures (Joël D)
    • Some other cosmethic changes.
  • File names created in analysis changed (Nils Anderson):
    • Instead of "AfterBlunders" "ExploitBlunders"
    • Instead of "BeforeBlunders" "AvoidBlunders"
  • When showing a move, if there is an analysis, an arrow of the best move is showed. (Vladimir)
  • Marking Caro-Kann as a favorite opening by default. (Nils Anderson)
  • McBrain engine updated to version 2.3
  • Training positions: added Play Current Position in Utilities (Brent)

Downloads : 

Saturday, April 22, 2017

Development version 11.00.16: challenge 101


  • Read PGN file, now support the selection of multiple files (unknown)
  • Challenge 101: new game to the beginning. It is about solving up to 10 positions of all types, with assigning a score. The program saves the last 10 scores, and you can check the ones made from the Training menu/Personal training.