The main line, as often seen in life-and-death problems, is this sequence from to
.
Here, reduces the number of liberties of the
chain to only two, so
becomes an atari which nullifies the possible eye at
.
Discussion below may need some cleanup or additional context.
jvt seems to denote a willingness to save the corner, but then (surprise) the tenuki at
lets Black kill it.
jvt: 13 moves later, does not revive the corner but creates endgame aji.
Reference: Link to game record in GoBase
AWA's questions about the solution have been moved to /discussion.