 This variation is often called Atari Go in the West, where it is becoming increasingly popular as a preliminary means of introducing Go itself to beginners, since, afterward, it is natural to introduce the idea of capturing territory, not just the opponent's stones.In Miai-Go, each player plays two moves at once, and their opponent decides which of the two should stay on the board.In Stoical Go, invented by abstract game designer Luis Bolaños Mures, standard ko rules don't apply.