Dragon v4.7

Discussion about development of draughts in the time of computer and Internet.
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MichelG
Posts: 245
Joined: Sun Dec 28, 2003 20:24
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Dragon v4.7

Post by MichelG »

It has been a while, but Dragon version 4.7.0 is now available:
  • New look, new icons
  • Removed all references to paid version/registration. It is all free now.
  • Solved crash if you used 32 or more processor cores (engine is unchanged otherwise)
  • You can now download the 6 piece endings from view->endgame databases
The old site will be down per 1/7/2026 and now redirects to:
https://www.mdgsoftware.nl/draughts/index.html
Krzysztof Grzelak
Posts: 1401
Joined: Thu Jun 20, 2013 17:16
Real name: Krzysztof Grzelak

Re: Dragon v4.7

Post by Krzysztof Grzelak »

Thank you for the new version of the program. Unfortunately, there are errors in the program.

1.The program is recording the moves incorrectly during the game.
I noticed that when I make a move with white, the program does not save it. And I will save it and the program will make a move with black.

2.Unable to generate the databases.
A black window appears and nothing happens.

Krzysztof
pontel
Posts: 45
Joined: Tue Jan 26, 2021 21:48
Real name: João Anselmo Pontel

Re: Dragon v4.7

Post by pontel »

MichelG wrote: Sun May 10, 2026 20:51 It has been a while, but Dragon version 4.7.0 is now available:
  • New look, new icons
  • Removed all references to paid version/registration. It is all free now.
  • Solved crash if you used 32 or more processor cores (engine is unchanged otherwise)
  • You can now download the 6 piece endings from view->endgame databases
The old site will be down per 1/7/2026 and now redirects to:
https://www.mdgsoftware.nl/draughts/index.html

Hello Michel,

The DXP mode isn't working, and the 1-ply balanced and 2-ply balanced options are unavailable.

Sincerely.
Krzysztof Grzelak
Posts: 1401
Joined: Thu Jun 20, 2013 17:16
Real name: Krzysztof Grzelak

Re: Dragon v4.7

Post by Krzysztof Grzelak »

Hello Michel,

I have a request. Can you make a new version of the program free of errors? Unfortunately, the program contains serious errors.

Krzysztof
pontel
Posts: 45
Joined: Tue Jan 26, 2021 21:48
Real name: João Anselmo Pontel

Re: Dragon v4.7

Post by pontel »

Krzysztof Grzelak wrote: Fri May 15, 2026 14:34 Hello Michel,

I have a request. Can you make a new version of the program free of errors? Unfortunately, the program contains serious errors.

Krzysztof

Hello Krzysztof Grzelak!

I think I managed to work around the problems temporarily until the version is updated, at least the DXP errors I found.

The workaround is to copy and overwrite the files from the current version into the previous version, except for the DragonDraughts interface executable. This way, you can use the v3.7.0 engine with the interface from the previous v3.6.2 version.

Best regards!
Krzysztof Grzelak
Posts: 1401
Joined: Thu Jun 20, 2013 17:16
Real name: Krzysztof Grzelak

Re: Dragon v4.7

Post by Krzysztof Grzelak »

It doesn't quite work that well. I copied the database and unfortunately the program does not see this database (version 4.6.2). I also noticed there is a problem (in my opinion) with the use of multithreading.
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