(;
AB[cd][ec][pd][pp][pq][pr][oq][qp][ro][rn][qn][pm][om]
AW[fd][do][or][nq][mp][op][oo][po][pn][qo][qm][rm][qk]
C[Black plays.

Source:  "Graded Go Problems", Volume 7, Kiseido Publishing];
LB[qi:A][ok:B][mm:C][jp:D]
C[Hint:  choose from A, B, C, or D.]
(;
B[mm]
C[Correct.  Black makes miai of attacking the right and lower side groups.];
W[qh]
C[White can defend the weak right side group, but ...];
B[jp]
C[... now Black has a good attack on the bottom group.]
)
    (;
    B[ok]
    C[Not good.  Black extends in the wrong direction.];
    W[qh]
    C[White has time to solidify the right side group.];
    B[jp]
    C[Black's pincer has little attacking power.];
    W[mn]
    C[White's lower group is not in danger.]
    )
)

