Tsumego Hero
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    		Sprint Intuition Rejuvenation Refinement
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    • Sadaharu:
    [current position] This variation is wrong because instead of A15 the opponent can play at A16 to live.
    		2. June 2025
    19:36
    TherapieGo:
    [current position] + D19 A18 C18 There is only a Disadvantageous Ko here.
    		23. April 2025
    17:27
    posetcay:
    Fixed the issue mentioned by jhubert and Ivan where the opponent answers wrongly with A15.
    		9. February 2025
    11:19
    posetcay:
    Added S2-R2-Q1 as an alternative.
    		9. February 2025
    11:16
    jhubert:
    Sorry, it doesn't seem to be fixed. May be my sequence is not the good one, but the answer A5 is still here
    Ivan Detkov:
    I already said, "Somehow, I have a hard time to fix this."
    		7. February 2025
    22:30
    jhubert:
    B18-B19-D19-C19-C18-E19-A18-B17_D16_A15-D17 is said incorrect but it is good as it is atari on the 2 stones.
    Ivan Detkov:
    T5 is a bad move. Connection at R3 works. The result is seki. Somehow, I have a hard time to fix this.
    		6. February 2025
    21:49
    kovarex:
    I discovered that one of whites answers was wrong, and this problem actually leads to 10 000 years ko (or one more approach ko), not a direct ko. I re-checked with the book official answer, which is also 10 000 years ko, so I updated the prbolem.
    		8. November 2023
    12:21
    semelis:
    The combination beginning with B2+D2 has a bad refutation for C2+A2 continuation at the end with A5 that should be C3, as C3 after A5 kills.
    posetcay:
    I couldn't follow your comment.
    		10. October 2023
    12:32
    posetcay:
    B2-B1-B3-C2-D1 becomes seki, but is accepted as a correct answer.
    		21. September 2023
    22:56
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