Tsumego From Games 63/ Attempts

I think dead.  

Calvin (AGA 11k): I think white is dead. seems natural, but after the hane of , a and b look to be miai. If at a, then at .

And now?  

Rich: It's a well-known problem (I believe it's in Kageyama's Fundamentals of Go) - but for the DDKs, what's black's tesuji response to 3?

Maybe this throw-in?  

Walin: Looks like would kill white after .

with help, try to connect  

Calvin: If white has a helping stone at , maybe this invasion can threaten to connect out like this. This appears in a few pro games. (Note is different here.) Without some external help, I don't know what to make of , unless it's a ko threat. Is a reasonable move?