> All to say, it seems likely that Diplomacy is a game where the difference between "the best human play" and "the best possible play" is much larger than eithe

> All to say, it seems likely that Diplomacy is a game where the difference between "the best human play" and "the best possible play" is much larger than either Go or Chess. Definitely, Diplomacy in general is substantially understudied compared to Go or Chess (largely because it's a tiny community). You can play for less than a year and get to top-level performance and much of the established wisdom/strategy of players is fairly bad. Even the best Diplomacy players are only scratching the performance of how good someone could be.