(;
AB[pm][pn][qm][qp][qq][kq][or][rr]
AW[qn][qo][pp][pq][pr][mq][nq][qr]
C[Black plays.]
(;
B[rp]
C[Black can make life, for example, with this descent.];
W[po]
C[But White is happy to connect.];
B[rs]
C[Although Black lives, Black can do much better.]
)
    (;
    B[po]
    C[After this uncompromising cut, a classic tesuji sequence follows.];
    W[ro];B[sp];W[rm];B[sn]
    C[The placement tesuji to remember.]
    (;
    W[rl]
    C[Running out doesn't work.];
    B[rn]
    )
        (;
        W[rn]
        C[Connecting doesn't work either.];
        B[rl]
        C[Black wins the semeai without even having to fight a ko.];
        W[sm];B[sl];W[rp];B[rq];W[so];B[sn]
        )
    )
)

