Arimaa is a game that was designed to be hard for AI to master. Its rules are quite different from chess, but it has a lot of chess in its DNA. It has since bee

Arimaa is a game that was designed to be hard for AI to master. Its rules are quite different from chess, but it has a lot of chess in its DNA. It has since been solved, but it survived 11 years with a $10,000+ prize for the first computer to beat a human champion. Now that we are in the age of AlphaZero, I think we are close to the bottom of the barrel of ways to design games to hinder AI. I would be surprised if I saw another pure abstract strategy game that favored humans over AI these days, the way Go and Arimaa used to.