(;
AB[qc][bd][md][pd][cf][pf][dh][qk][bn][bo][bp][bq][br][eq][mq][pq][cr]
AW[pb][cc][fc][kc][nc][dd][bm][dm][co][cp][cq][lo][kp][dq][dr][gq]
PL[W]
C[Last week's problem looked at Black A, instead of the marked play.  But is Black's marked play here feasible?

Source:
    American Go Journal, Vol. 35, No. 2, p. 24
    From Baduk Monthly.]
TR[md]
LB[ld:A]
(;
W[lc]
C[Answer:  Not really.  Black's move is weak.

However, if White incorrectly answers here, ...];
B[nd]
C[... Black's move here is sente, and Black gets away with a bad move..]
)
    (;
    W[mc]
    C[Instead, White should block here.];
    B[kd]
    C[If Black continues by pressing here, ...];
    W[jd];B[ld];W[jc]
    C[... now Black A is not sente.  Even worse, White threatens the weakness at A.]
    LB[nd:A]
    )
)

