(;
AB[jc][qc][nd][pd][be][ce][ee][dh][ci][pi][ck][fn][bo][co][dp][dq][fp][gq]
AW[dc][fc][rc][rd][bd][cd][of][qf][cg][cn][dn][qo][cq][jq][pq][br][dr][er]
TR[cq]
C[Black's response to the marked play?

Source:
    American Go Journal, 2003 yearbook, p. 10
    Originally from Go Review X,2 (Feb. 1970)]
(;
B[jo]
C[After White lives in the lower left corner, Black could try to expand the left side moyo here.

However, this idea reflects a negative attitude.  Trying to enclose such a large center area is not the best use of Black's thickness.  Using thickness to attack will produce far better results.];
W[lp]
C[After White strengthens the lower right, Black still has to worry about White reducing the oversized left side moyo.]
)
    (;
    B[mp]
    C[This move may seem risky, but is a good move.

The following sequence is from a pro game between Yamabe Toshiro 9P (white) and Kano Yoshinori 9P.];
    W[ko];B[mn];W[km]
    C[Both players escape lightly into the center.];
    B[ml];W[kk];B[pm]
    C[Jumping to here, Black's group begins to look settled, while White's group seems unsettled, because of Black's thickness to the left.];
    W[oo];B[mj]
    C[White goes on to win this game of 317 moves, but Black's strategy here was not the problem.

With pressure against White's weak groups, Black controlled the flow of almost the entire game.]
    )
)

