As far as I can tell, this position is functionally symmetric … I look up notcher “222NN”, it’s unsettled. That's not helpful at all!
I like this move. It doesn’t resort to bending back. If Black blocks at A, White can descend at B. (Descents are too fun to play.)
xela: I picked the same move, but for a different reason:
leaves the aji of white c later. But see below...
Empty triangles are good.
White can push at A later. (This is probably not the best sequence. Aji usually describes something more … potent.)
A warning from KataGo
xela: I asked KataGo. Rather than living directly, it prefers a more complicated version of force before defending, with this . Black can in fact kill, but it's a bad idea: after
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in this diagram, white still has more forcing moves on the outside, and white's framework on the right is probably worth more than the captured group (depending on the rest of the board). KataGo suggests that black should not kill, but should play
at either a or b (again it chooses different moves depending on the full board context), leading to a complicated fight.