semelis: For the 10kKo/seki variation, wouldn't A3 immediately instead of B1-A1-A3 also work ?
In both cases white can play B1 to get a seki and it only makes the ko option slightly worst than it already is for black.
kovarex: Are you reffering to the opponent move? Doing so would also lead to 10k ko in my opinion.
Are you reffering to the opponent move? Doing so would also lead to 10k ko in my opinion.