Tsumego Hero
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  • Black to play. (No Ko)
    Sprint Intuition Rejuvenation Refinement
    3d (28.05%)
    File by Jérôme Hubert

    Is the 'wrong' line starting with kosumi not ko? Depending of the rules, could be better solution for the attacker no?
    The default rule set on the website is Japanese. Superko is alive or the game ends with a tie. A Ko would be better if the player was way ahead in points and/or threats, but in general alive in Superko would be best. Let's add a hint.
    3. March 2022
    Not really black to kill since white can live in Eternal Life?
    Eternal life possibility is presented as the solution but it is indeed dependent on the superko rule. Changed to "black to play" anyway.
    6. February 2022