Joseki of the week 10

This week is a continuation of joseki of the week 4.
It was a 4-4 point, low approach joseki where black plays a tsuke above white with 3.

White normally plays 4(d13) after black 3(d14), but c(d15), d(c17) or tenuki may be possible. These will not be looked at here however.

In joseki of the week 4, black a(e14) next was looked at. This week black 5 at b(c15) is considered.

Black can either tenuk or play around a(k17) now.

White can either play at a(c17), black b(d17) then white c(b16) to take some of the corner, or d(b15) to gain sente.
Black plays b in response to a, since white can live in the corner otherwise.
Black replies to d(b15) with ac17(), since playing at c(b16) will result in bad shape and bad aji in the corner.

Black can also play this way. Now black has a secure corner and sente, but the white group is solid and has greater influence.

If there are any questions about the joseki of the week,
or if they are too basic/under-examined/complex, let us know in the comments!