Tsumego Hero
  • Sprint Intuition Rejuvenation Refinement
    1d (2146)

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    d4rkm4tter:
    I flagged B16-D19 as incorrect.
    25. October 2022
    20:28
    Ivan Detkov:
    D19 starts a very unfavorable ko with a risk to lose many points. Saying that I can imagine positions when this is playable. Hence, it looks like B16 is a bad solution here.
    posetcay:
    Yes, I agree that D19 should be the only correct solution here, even though D19 starts a terrible ko for opponent, it is still better to not give the option of choosing. The only counter argument could be that this is a intermediate level collection and B16 is close enough to the correct solution to be accepted.
    24. October 2022
    00:09
    caranthir:
    Seems to me that ko is unavoidable if B16, D19.
    d4rkm4tter:
    Yes, let's say it is ko and incorrect.
    23. October 2022
    23:48
    Djab:
    Yes you are right ~ no ko. So this is another pattern that could be added
    3. May 2021
    07:19
    Djab:
    I suggest to suppress the mention "No ko" in the title because there is one combinatino where there is no choice but a ko : B16 - C16 - D19 - B15 (instead of H18) - H18 - J18 and then life is on condition, depending on a ko : am I right ?
    d4rkm4tter:
    After your sequence, black descends h19 and is alive, right? So b15 or h18 doesn't matter black can live both ways.
    26. April 2021
    12:34
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