(;
AB[qd][oc][qh][nq][jq]
AW[jc][qj][pp][pn]
C[White to play on the right side.

Source:
    American Go Journal, Spring 1988, Vol. 22, No. 2, pp. 29-30
    Keshi and Uchikomi, Kaoru Iwamoto 9 dan]
(;
W[oj]
C[A mistake.
White fortifies his own position in the lower right, but ...];
B[oh]
C[... Black does the same and White has lost the chance to invade.]
)
    (;
    W[oe]
    C[Inadvisable.
White plays on the standard erasing point  for this type of formation, but only larger Black frameworks require such a light erasing move.];
    B[pf];W[nc];B[pc]
    C[Black defends the upper right, while White must make another move to make shape.];
    W[nd]
    C[For example, White can block here, but ...];
    B[ql]
    C[... Black can easily invade with such strong support from above.]
    )
    (;
    W[qf]
    C[Correct.
An invasion is called for.];
    B[pg]
    C[The best response.  Black intends to indirectly consolidate the corner by pushing White in that direction. ];
    W[pe]
    C[The only move.];
    B[pd];W[oe];B[nd];W[ne];B[ng];W[me]
    C[White's last 4 moves may seem tactless, but are proper here.  White has a flexible shape.];
    B[oj]
    C[For example, if Black jumps toward the bottom, ...];
    W[pl]
    C[... White has time to defend.];
    B[lc]
    C[And if Black defends the top, ...];
    W[ke]
    C[... White can further extend to make contact with his upper side stone.  White has accomplished his objectives.]
    )
)

