Tsumego Hero
  • Sprint Intuition Rejuvenation Refinement
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    semelis:
    I see.
    21. July 2021
    12:38
    semelis:
    Is it because of sente/gote ?
    caranthir:
    The drawback with O2 P1 L1 is precisely that it leaves that said atari behind for no gain at all, something which w can use to make a sente seki (that would be gote in the accepted solution) either immediately or later, or as a free ko threat.
    20. July 2021
    12:08
    semelis:
    After b O2, w P1, b L1 black is alive in seki if white ataris at N1 or with 2 eyes in any other case, but is marked incorrect. Other problems mark both seki or 2 eyes correct to live.
    20. July 2021
    12:07
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