nate2: In one of the correct sequences, A2, B3, B2, C3, F1, E1, it has the only next move as C1, but A4 is also a winning sequence because it forces A3 which can be responded to by B1 which no longer creates seki, then either G1 or A5 must be played allowing C1 and eventually A1 to result in death.
In one of the correct sequences, A2, B3, B2, C3, F1, E1, it has the only next move as C1, but A4 is also a winning sequence because it forces A3 which can be responded to by B1 which no longer creates seki, then either G1 or A5 must be played allowing C1 and eventually A1 to result in death.