Some thoughts about the proposed winning criteria:
On the site, winning the challenge is completely unimportant, the important thing is clever ways to optimize the score.
Even though someone come up with a very clever trick to post the best-scored-so-far solution, their solution might still not win if someone else find a small improvement on that solution (and decide to post a new answer instead of posting it as a comment)
Besides, for challenges that allows only one competition (instead of typical code golf challenges which allows multiple separate competitions in each languages), newer a…