![[Diagram]](../../diagrams/21/859d0d3dda5b9549b0b8691908ecba7a.png)
JoelR attempt
JoelR: The high part is an unfinished bulky five, but mind the shortage of liberties against the edge.
![[Diagram]](../../diagrams/20/ac9e21947bf0f985f2314c1913a2ac26.png)
The marked points are miai now
Black 5 here looks better to me. Can't explain why. Maybe because this move work if the point 'a' is taken by white already.