(;
AB[pd][qd][de][ef][ch][dh][oj][qj][ol][cn][dp][dq][ip][oq]
AW[rb][dc][dd][gc][qc][rd][ce][qf][cg][ql][po][pq][dr]
PL[W]
C[White's response to the marked attachment?

Source:
    American Go Yearbook 2003, p. 43
    Originally from Go Review IV, #6, June 1964]
TR[oq];
W[op]
C[After White's normal hane here, ...];
B[nq]
C[... Black draws back.

Now what does White do?]
(;
W[pr]
C[Locally, descending is the move -- White defends a big corner.  However, ...];
B[np];W[no];B[mo];W[nn];B[mn];W[nm];B[ll]
C[... on the outside, Black's huge framework is almost impenetrable.

White's local tactics have been a disaster in terms of the whole board.]
)
    (;
    W[np]
    C[But with the global situation, White needs to run out into the center.];
    B[pr]
    C[Black reduces the corner.];
    W[qq];B[mq];W[lo];B[kp]
    C[Compare this overall situation with the previous variation.

Now Black's marked stones are no longer the anchors of a massive framework, and are even feeling a little uneasy with White's stones pincering from above.]
    TR[oj][qj][ol];
    W[cq]
    C[And note that at the right time, White has this sequence in the lower left.];
    B[er];W[br];B[ds];W[cs]
    C[Ko.]
    )
)

