RTGProblem100/Attempts

Main line  

Dieter: This looks to me to be the main line. a is next self atari.

fractic: That was fast. I thought was a nice move. at a would lead to a seki.

Dieter: indeed, is a nice move.

Miai perspective  

A lot of the complexity can be reduced by noticing that the points a and the points b are instances of miai. Only in the main line the solution involves something else, namely shortage of liberties.

Miai perspective  

fractic: Actually there is another shortage of liberties. If White has an extra liberty at as in this diagram he can live.