Perhaps the author of the Ipollit series is the same as the Houdini author.He may have released Ipollit to deceive the world to what he was up to and if it ever was proved that Ipollit was reversed engineered from Rybka 3 then the Houdini author could plead ignorance.It seems strange to me that ...

I don't know, but is there something like 'Fair Use'?
Where is the dividing line between copyrighted material and free material?

A chess engine is a robot, just like a car is in a way a robot.
Now there are several engine parts in cars that are more or less the same, and all cars need them to be ...