Joaz, thanks for your comments. I didn't see

as an invasion, but I suppose it is a bit behind enemy lines. I should be more careful.

was in anticipation of a running fight. I didn't want to risk getting the two groups separated so I connected strongly. Looking at the board now, it seems obvious I should have played a reducing move with

that would threaten to build a large top. It would have worked much better with

. Oops!