Go is the oldest game in the world still played in its original form. Some estimates are as high as 4000 years!

… {it is} something unearthly … If there are sentient beings on other planets, then they play Go. – Emanuel Lasker

Go is simple enough for a 4 year old to learn, but too complex for a computer to beat a human who is a strong beginner.

A few moments to learn, a lifetime to master.