Engines that can be configured to play more or less arbitrary Chess variants are:
Zillions of Games (commercial)
Nebiyu (NebiyuAlien)
Sjaak / Sjaak II
Fairy-Max
The latter three are freeware, and can all run under the WinBoard GUI. Fairy-Max is even included with the standard WinBoard install.
Does anyone know of a good chess variant program that can support custom variants?
Thks!
~hooboy
Chess lover and rookie