(;
AB[qd][od][qg][pq][op][qk]
AW[qi][pm][qo][pk]
C[Black's response to the marked stone?

Source:
    American Go Journal, Fall 1988, Vol. 22, No. 4, p. 29
    Keshi and Uchikomi, Kaoru Iwamoto 9 dan]
TR[pk];
B[qj]
(;
W[pj];B[ri]
C[Black connects out easily.]
(;
W[ql]
C[White can block here, but ...];
B[pi];W[oi];B[qh]
C[Black's invasion has been clearly successful.]
)
    (;
    W[pi];B[qh]
    C[Again, Black has been successful.]
    )
)
    (;
    W[pi];B[pj];W[oj];B[ri]
    C[Black connects out.];
    W[rh]
    C[For example ...];
    B[rj];W[qh];B[rg];W[sh];B[ok];W[pl];B[oi];W[nj];B[oh]
    C[Black wins the semeai.]
    )
)

