Tsumego Hero
  • Superko

    Superko rules prohibit recurrences of an earlier board position under certain circumstances. The recurrence of such positions could be caused by long cycles, such as triple ko, eternal life or round-robin ko. When such a position happens in a real game, the players either play out the superko, which results in a tie, or they avoid the superko in order to continue the game normally.

    https://senseis.xmp.net/?Superko

    This tag gives a hint.

    Created by d4rkm4tter.