Brent: I think W can make a ko this way. But I'm not sure whether W can kill outright.
ChrisSchack: This looks promising. is obviously forced, and I believe 4 and 6 are, too...
This appears to fail, B has enough liberties to kill the inside stones with a, and it leaves viable eyespace once captured if W plays a. Oh well, failed attempts are allowed here too, right? Now, what else could work...
Alex: You're on the right track. You have all the right moves, just the wrong order.