This one is easy but very nice.
Would be interesting about difficulty of others for the second one.
There it was me to move, 6 minutes on the clock, but in sudden-death, not knowing about how many moves will follow, I always try to move within a few seconds.
I've played hishi instead tsume - can you guess my moves? ;-)
My opponent also had a strong attack, but no tsume.
(In follow, I'd made bad defense, giving my opponent a few chances to win by (easy) tsume, but he didn't find it. But this doesn't matter anything about this puzzle.)
The second one is pretty hard to spot imo. :)
Two more.
The first one should be very simple, but contains a technice maybe beginner have to learn:
http://tinyurl.com/he7plcn
And a second one:
http://tinyurl.com/z63oj6b
I don't, but someone else might. :) The link works, thanks.