Dragon v4.7

[MichelG]

The issues should be fixed now in 4.8
You can download from: https://www.mdgsoftware.nl/draughts/install.html

* Option to show the board in 3d
* UI improvements
* engine improvements: +15% speedup of the move generator (minor effect on overall peformance)
* gui bugfixes: showing the gametree, endgame generation
* option to download 7 piece endings

[Krzysztof Grzelak]

MichelG - I downloaded the database 7 piece - unfortunately it is not complete. Will provide full 7 piece database.

[Sidiki]

The issues should be fixed now in 4.8
You can download from: https://www.mdgsoftware.nl/draughts/install.html

* Option to show the board in 3d
* UI improvements
* engine improvements: +15% speedup of the move generator (minor effect on overall peformance)
* gui bugfixes: showing the gametree, endgame generation
* option to download 7 piece endings

Hi Michel,

Congratulations for this update, also for the engine improvements.

Friendly, Sidiki

[MichelG]

MichelG - I downloaded the database 7 piece - unfortunately it is not complete. Will provide full 7 piece database.

Hi Krzysztof,

There is no need for those, they are left out on purpose. It is better to spend the memory usage on other databases than the mirror images.

A 1 ply search in 4 vs 3, will find the position in the 3 vs 4 database.

Michel

[Krzysztof Grzelak]

Hi Krzysztof,

There is no need for those, they are left out on purpose. It is better to spend the memory usage on other databases than the mirror images.

A 1 ply search in 4 vs 3, will find the position in the 3 vs 4 database.

Michel

Thank you for your reply MichelG. It is possible to send the full 7 piece database.

Krzysztof

[Krzysztof Grzelak]

Hi MichelG - I have a request and a question. What can you do when such a window appears?



Thank you in advance for the information.

Krzysztof

[MichelG]

Hi Krzysztof,

The database generator is probably not frozen but preparing the required databases. It displays no progress during this phase. This makes it look as though nothing is happening.

This has been improved in 4.8.1, that will release soon, it will give better feedback on what is happening.

Michel

[Krzysztof Grzelak]

Hi Krzysztof,

The database generator is probably not frozen but preparing the required databases. It displays no progress during this phase. This makes it look as though nothing is happening.

This has been improved in 4.8.1, that will release soon, it will give better feedback on what is happening.

Michel

Thank you very much for the information Michel.

[MichelG]

New version 4.8.1 available on https://mdgsoftware.nl/draughts/index.html

* Option to move by selecting fields rather than dragging
* Dragon now starts with the 3D-board by default
* Various 3d-graphics improvements. Kings are better visible when shown in 3d.
* Various user infterface bug fixes
* DamExchange bug fixed

[Krzysztof Grzelak]

Thank you for the new version of the program.

[Sidiki]

Hi Michel,

Thanks again for you come-back and these update.
I still encounter a problem since 4.8's version.
After each move i receive a message saying that version not enough place to show the PV.
Have you an idea please.

Friendly, Sidiki

[MichelG]

Hi Michel,

Thanks again for you come-back and these update.
I still encounter a problem since 4.8's version.
After each move i receive a message saying that version not enough place to show the PV.
Have you an idea please.

Friendly, Sidiki

I fixed it in version 4.8.2, download at https://www.mdgsoftware.nl/draughts/index.html

This is also the first version of dragon in a long time that should improve the engine strength. More such improvements are planned.

Changes:
* fixed some bugs in the user interface
* damexchange: you now get a warning if large pages are not enabled (switch these on for +5% speed)
* Reduced the max number of cores in hyperthreading systems to the number of physical cores. Hyperthreading hurts search performance. Database generation still should use all cores.
* The engine is now about 15% faster in nodes / second
* improved scaling for high thread count

[Krzysztof Grzelak]

Thank you for the new version of the program.