BQM 91 / Attempt 1

Can you go higher?  

I'd like to play the exchange / first. After that a black extension around a seems a little smaller than before.

kmr - my human feeling is that black may not respond to this probe and play tenuki (increasing his moyo). Although tenuki for black may not be best move according to AI, against human players it may be very good (especially against those who are bad at invading/reducing moyos.