IgoHatsuyoRonProblem122/Attempts

[Diagram]

W1 looks interesting (i.e. necessary sooner or later), W7 at B4

[Diagram]

Second part

Tapir: More exploration of a certain line, than solution. White may win the semeai, but can he defend against a? (A stone at e.g. b would.) And, I'm not sure about corner semeais (the line after W15). - White lose even the semeai like this...

[Diagram]

Opening my eyes... isn't the task to defend against both a with one move?

[Diagram]

Testing the assumption

[Diagram]

Solution? - I

[Diagram]

Solution? - II (W7 at W1)

Tapir: I hope this is the solution... but it isn't. Black can take back at the marked stone, and wins the semeai.


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