I get all exited when the discussion turns to hashing policies, but it's almost 2 AM so I'll keep this short.

For analysis purposes, you don't want to be throwing things out of hash because of generation, but you do need to have some way to prevent the hash from getting filled with high depth ...

There are two aspects to this issue; Programming and algorithm development. To have a top original engine, you need to be a master of both domains.

The availability of strong, cleanly written, open source engines allows folks who have good algorithmic skills to compete at the top levels of engine ...