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Capa chess is a chess program. Features built-in simple engine, interface with external XBoard/WinBoard and UCI engines, basic plug-in capabilities, import/export, 2D/3D boards with customization.
Java JRE 1.8 or above required.
***** NOTE *****
This project has been incorporated into the Vulcan Chess Mods project
at http://sourceforge.net/projects/vulcanchessmods/
*****
The Mouse Bug Patch significantly improves responsiveness of Vulcan, an open-source 3D chess program written by Mauro Persano, to mouse events when compiled for use with X11.
From the author's site*: "vulcan lets you play against the computer a chess variant inspired by a certain well-known science fiction TV series."
* http://www.fzort.org/mpr/projects/vulcan/
** If the source code tarball for Vulcan isn't available from the author's site, it can be found at http://web.archive.org/web/20110726072225/http://www.fzort.org/mpr/projects/vulcan/