Houdini Chess
6 known apps
Houdini 3 for Chess King Pro by Houdini Chess
Houdini 3 Pro by Houdini Chess
Houdini 4 Pro by Houdini Chess
Houdini for Chess King by Houdini Chess
Houdini version 3 by Houdini Chess
Houdini version 4 by Houdini Chess