Knights is a simple chess board for KDE 4. 

It is a rewrite of the KDE3 Knights, but it 
net yet feature-complete compared to the old 
one. Supports playing againts computer engines 
that support the XBoard protocol or against 
player at the same computer. It has automatic 
rule checking and some nice animations.

WWW: http://kde-apps.org/content/show.php/Knights?content=122046