I won a dots and box bot competition years ago with this: <a href="https://github.com/farnasirim/dots-and-lines-box" rel="nofollow">https://github.com/farnasirim/dots-and-lines-box</a>. You can try it out in the terminal as easy as `g++ decision.cpp && ./a.out` and try the technique in the video in a 4x4 instance of the game against the bot. It plays fine in general, but I had not heard about the trick for the 4x4 case (outlined in the video) back then, so it doesn't support it.
While I had no name recognition of this brilliant theorist, turns out he is the same guy that wrote Winning Ways for Your Mathematical Plays (recommended). Also found this sad news: <a href="https://news.berkeley.edu/2019/04/18/elwyn-berlekamp-game-theorist-and-coding-pioneer-dies-at-78/" rel="nofollow">https://news.berkeley.edu/2019/04/18/elwyn-berlekamp-game-th...</a>
Elwyn Berlekamp wikipedia entry: <a href="https://en.wikipedia.org/wiki/Elwyn_Berlekamp" rel="nofollow">https://en.wikipedia.org/wiki/Elwyn_Berlekamp</a>
He died in April this year.