Of course with the level of programming AIs for games these days... Quarto would be like a "walk in the park".
I stuided the only(!) match between two of the highest ranked players here, watched the replay, and guess what happend. They played the advanced mode and both did a perfect match. The match was decided by the last piece left. Totally flawless play.
I stuided another match, basic rules this time, between high ranked players, and the match was also flawless, last piece left decided result.
Please note: I don't claim anybody cheats! But of course my findings makes me wonder... are some guys just using this game and this site to test if their AI is perfect... well I am very suspicious now... only me?