(;
AB[pn][mp][mq][mr][np][oq][or][lr][pr]
AW[rn][lo][lp][lq][mo][no][op][pp][pq][jr][kr][qr][ps]
PL[B]
C[Black plays.]
(;;
B[qq]
C[Black clearly doesn't have 2 eyes on the inside, so making something happen on the outside is the only possibility.]
(;
W[rr]
C[Simply extending doesn't work.];
B[rq]
C[Now White has a liberty shortage.];
W[rp];B[ls];W[ns];B[nr];W[os];B[ms]
)
    (;
    W[rq]
    C[White can also try to capture the cutting stone directly.

Now White no longer has the corner liberty shortage, so what can Black do?!];
    B[qp];W[qo]
    (;
    B[rr];W[rp];B[rs]
    C[A fantastic move.]
    (;
    W[ls];B[qs];W[qq];B[sr]
    C[Black makes the 2nd eye on the corner point!]
    )
        (;
        W[qs];B[os];W[qq];B[ls]
        C[Black lives.]
        )
        (;
        W[qq]
        C[White's last possibility to kill.];
        B[ls];W[ns];B[nr];W[os];B[qs]
        )
    )
        (;
        B[rp]
        C[Mistake.];
        W[rr]
        C[White can simply connect without creating a corner liberty shortage.  Black dies.]
        )
    )
)
)

