(;
AB[pc][qd][pe][oe][ed][ec][de][ce][db][cb][dh][ch][di][bi][gh][ep][eo][cp][cn][bq][br][qp][rp][oq][nq][oo]
AW[eb][fa][gb][fc][fd][dc][cd][oc][od][md][qj][qg][qo][po][mq][mp][cr][cq][fq][eq][fp][gn][ci][dj][ej][gj][cl]
C[Black plays:  A, B, or C?

Source:
    Blueprint 361, Miyamoto Naoki 9p
    Go World #6, Mar-Apr 1978, p. 59]
LB[jp:A][kd:B][no:C]
(;
B[jp]
C[A mistake.]
(;
W[mn]
C[Expecting White to extend here is wishful thinking.];
B[jm]
C[A good sequence for Black.]
)
    (;
    W[no]
    C[Instead White would take the key point.  The difference between this move and the 1 space jump is enormous.];
    B[on]
    C[Black must extend to avoid being shut in.];
    W[nn];B[om]
    LB[pp:A][pq:B][op:C]
    C[Black must extend again to avoid the sequence White A, Black B, White C, after which Black cannot cut off the White stones on the right.];
    W[jn]
    C[White's cap would be painful.]
    )
)
    (;
    B[kd]
    C[Also a mistake.

Black is ignoring a serious weakness in the upper right corner.];
    W[ne];B[og]
    C[So far, Black seems to be doing well, but ...];
    W[pd];B[qc];W[qe]
    C[... White's push-through and cut exposes a serious defect in Black's shape.];
    B[qf];W[pf]
    C[White captures a stone, and Black's invasion has backfired because Black does not have an effective attack against the 5 White stones to the left.]
    )
    (;
    B[no]
    C[Give yourself a pat on the back if you selected this solid move.];
    W[ln]
    C[Yes, White takes a big point here, but Black has accurately counted the game balance.];
    B[ql]
    TR[qo][po]
    C[Black has this good continuation, which effectively captures the 2 marked stones];
    W[pl];B[pm];W[ol];B[qk];W[pj];B[qf]
    C[Black uses sente to take a firm grip on all the corners, while White has a large central framework.  The game is even.]
    )
)

