If you invent a board game based on Go and ensure human's superiority over AI machine for the next 100 years, what will that game be?

Three simple requirements,

1. the game should still be fun to play and not extremely difficult to get started, similar to Go,

2. it's a variation of Go, but you decide how far away you want to deviate from Go,

3. it can be implemented today, not depending on some future factors.

Obviously there is no way to be sure how advanced AI will become, so please treat this as a wild brainstorming exercise.