Tsumego Hero
  • Sprint Intuition Rejuvenation Refinement
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    ArsenLapin:
    Hello, in the proposed solutions, the defender who is trying to live sacrifices a stone at R19 to start the ko, and as a result, the player who is trying to kill takes the ko first. However, the defender could play O19 instead of starting the ko. That threatens to make a seki, so the killer has to start the ko by sacrificing at R18, thus the defender takes the ko first.
    posetcay:
    Nice catch, resolved.
    9. May 2023
    11:03
    twohalf:
    Hi, i've solved this puzzle, but from what i've read it should be ko But maybe i'm missing smth. So for upper right position: S19 and if Q19 is a response when of course corner die, but what whill happen if insted of Q19 the response will be Q18? I got this sequence: S19 -> Q18 -> Q19 (can't put R19, because of seki) -> R19 -> R18 (starts a ko) Am i missing anything?
    d4rkm4tter:
    Yes, solution is ko. Q19 and S19 work as first move.
    13. April 2020
    11:31
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