What is the best way for black to capture two stones?
A situation similar to this just came up in my game, and I thought it was worth sharing since the shape seems pretty common, but I haven’t thought about it before

What is the best way for black to capture two stones?
If it’s about the number of ko threats one leaves behind then maybe A6. Otherwise I’m not sure of the difference between A6, A5 or A4. ( edit Whoops had the numbers backwards)
A4 or A5 leaves two ko threats, A6 only leaves one.
(The situation might change if black were less solid in the lower corner, so that something like A3 could be a ko threat for white)
Very counterintuitive, I love it!