Tsumego Hero
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    		Sprint Intuition Rejuvenation Refinement
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    • 1001kyu:
    I still don't see a refutation to T17 T16 S15 S16 P17. Some options are T17 T16 S15 S16 P17 Q19 R19 or T17 T16 S15 S16 P17 R19 S19 T18 P19
    		21. October 2025
    11:19
    Miko_boc:
    Cool, thanks for the support in analysis.
    Ivan Detkov:
    I figured out how to edit here. Your moves were added.
    		6. April 2024
    22:21
    Miko_boc:
    Soo still I don't see a sequence that counters T3 kosumi - isn't T3 kosumi a correct solition? Ivan your first sequence "T3 T4 S5 S4 P3 Q1 R1 P1 N1 S1" - P1 looks like a typo.
    Ivan Detkov:
    Yes, it is typo. It looks like T3 T4 S5 S4 R1 T1 P3 is the best sequence. Unfortunately, the Beso Go editor is not working well with this task and I have a trouble to edit it.
    		6. April 2024
    08:28
    Miko_boc:
    Postecay can you please provide the continuation? I can't see ko here: A3 A4 B5 B4 E3 D1 C1
    Ivan Detkov:
    It is complicated. Consider T17 T16 S15 S16 P17 Q19 R19 P19 N19 S19. However, T17 T16 S15 S16 R19 looks like an unconditional kill.
    		4. April 2024
    07:28
    Miko_boc:
    Ivan apologies - I meant T17 kosumi. It seems to work too. Example sequence: T17 T16 S15 S16 P17
    posetcay:
    Doesn't work if D19 after E17, it is ko at best. Might be worth adding the variations though.
    		2. April 2024
    08:24
    Miko_boc:
    no need to rush with 2 stones, kosumi at S17 works nice too (if response at S16, then cut at S15).
    Ivan Detkov:
    I cannot understand this statement. Please explain better.
    		30. March 2024
    22:15
    StephaneLamy:
    [current position] In this variation, B1 also works?
    		30. March 2024
    08:51
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