(;
AB[qd][pe][cp][ep][eq][dm][go][ho][hp][kp][lq][nq][oq][op][pq][qr][po][pn][pl]
AW[dc][ce][oc][pp][qp][qo][qq][rr][rm][oo][no][np][kn][fp][fo][fm][gp][gq][fr]
C[Black plays:  A, B, or C?

Source:
    Go World #4, Nov-Dec 1977, p. 56
    Blueprint 361]
LB[ml:A][cj:B][mc:C]
(;
B[ml]
C[Correct.  White's lower center right group is the weakest.];
W[nm];B[ok];W[kl];B[mj]
C[Black builds up a center position while keeping up pressure on the White center group.

And all of Black's groups are strong.]
)
    (;
    B[cj]
    C[A big play, but lets White off the hook in the center.];
    W[iq]
    C[White forces here in sente first to settle the lower left group.];
    B[jo];W[ml]
    C[Now White can skip out to the center.];
    B[pj];W[mi]
    LB[ph:A]
    C[White advances even further into center.  White now has no unstable groups.  In addition, Black has to worry about White attacking at A.]
    )
    (;
    B[mc]
    C[Too small.];
    W[ml]
    C[White takes the crucial point.

Trying to escape in the top right would have justified Black's first move.];
    B[pj]
    C[Now Black must defend the right side.];
    W[mi];B[ph]
    C[Again, Black must defend.];
    W[id]
    C[White's play here exposes the weakness in Black's plan.];
    B[nd]
    C[Defending here looks unavoidable.];
    W[dj]
    TR[rm]
    LB[qb:A]
    C[And White can take the last large point here.

White now dominates the center.  Also, the marked stone takes much of the value out of Black's right side.  Lastly, White's aji in the upper right, starting with A is something that Black has to worry about.]
    )
)

