It is possible that I've missed the memo, I didn't followed this very
actively. There is no announcement in "MetaOptimize Challenge
[announce]" about results.
I've submitted my entry too -
https://github.com/lvv/semgen, run time
is 170 seconds on my 4yr old laptop. I was a little bit late
(November 8) with my submission, so I don't expect much from this, but
I am curious.