Tsumego Hero
  • Sign In
    		•
    Black to play. (Solution is a Ko)
    		Sprint Intuition Rejuvenation Refinement
    1k (2043)
    Upgrade to Premium
  • 9



    • 1001kyu:
    note: the coordinates in my comment seem to not transfer properly to configurations in the upper part of the board
    posetcay:
    Changed outside stone position and added T5 resistance as an alternative sequence.
    		12. February 2025
    11:00
    1001kyu:
    The stone at S9 actually ruins this problem, because S2 S1 T3 T5 Q1 T7 T8 S8 T6 T2 is a double ko, and otherwise S2 S1 T3 T5 T7 S3 Q1 lives in seki. There should be no stone at S9, it is not required for escaping anyway in the variations that matter, or if you want to make it clear put the stone at S10 instead.
    posetcay:
    Changed outside stone position and added T5 resistance as an alternative sequence.
    		12. February 2025
    10:57
    JaxinF:
    After D1 can’t white push on the first line, connect and then it’s still a ko
    Sadaharu:
    No it's not. Refutation added.
    		8. February 2023
    05:02
    searching...