Tsumego Hero
  • Sign In
    		•
    		Sprint Intuition Rejuvenation Refinement
    3d (2318)
    Upgrade to Premium
  • 42



    • EdIV:
    SGF
    posetcay:
    Your moves have been added.
    		13. July 2025
    20:20
    EdIV:
    [current position] I think playing E4 too soon is a mistake and causes the group to die. Also I found an additional way too live by playing B1 instead of B3 first. I'll add and sgf.
    posetcay:
    Marked early E4 first as wrong and added refutations.
    		13. July 2025
    20:20
    Ivan Detkov:
    Added E4 after F3 H3 G3 K2.
    		25. April 2024
    15:12
    posetcay:
    Added the option to play at B17 anytime and added A17 at B19 as an alternative resistance by opponent.
    		25. December 2023
    18:48
    StephaneLamy:
    After F17-H17-G17-K18-B17-B18, the sequence B19-A17-A18 is marked as correct, but what if A18 instead of A17? Seems B19 here is a mistake, and should only be A18 to force the ko?
    Sadaharu:
    Black can live without ko if white plays A18
    		1. March 2023
    11:16
    MZak:
    O3 M3 N3 K2 S3 S2 and T2 or S1 also work
    d4rkm4tter:
    Your moves have been added.
    		20. April 2021
    08:33
    MZak:
    T2 insted of S1 also leads to a ko.
    d4rkm4tter:
    Can't find the sequence.
    		29. March 2021
    13:42
    searching...