Tsumego Hero
  • Sprint Intuition Rejuvenation Refinement
    1d (2130)



    1001kyu:
    You are right. Maybe that's worth adding as a refutation.
    Sadaharu:
    Your moves have been added.
    4. November 2025
    14:19
    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
    Ivan Detkov:
    Is not it a ko A3 A4 B5 B4 E3 C1 B1 E1 G1 A2?
    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
    searching...