(;
AB[pd][pq][fq]
AW[dp][cc][dn]
C[Black plays.

Fuseki study.

Source:
    American Go Journal, Winter 1991, Vol. 25, No. 1, pp. 34-35];
B[jp]
C[Black plays high, because Black's other stones at the bottom are low.];
W[qn]
C[White stays far away to avoid a pincer, which would be very severe in combination with the marked stone.]
TR[jp];
B[qp];W[qk];B[qi]
C[A very urgent move in order for Black to maintain the pressure of the advantage of the first move.];
W[on]
LB[pl:A]
C[Defends against a Black attack starting with A.];
B[nc]
TR[qi]
C[Pro level thinking.  This move defends against an approach move from the other side, which would tend to isolate the marked stone.];
W[ic]
C[Prevents Black from making a double-wing formation.];
B[ci]
(;
W[ck]
C[The correct direction.];
B[cf];W[ed];B[mp]
LB[op:A]
C[Defends against a shoulder hit at A, while also indirectly attacking White's weakest group.];
W[dr]
C[Maintains the territorial balance, while threatening to invade the bottom.];
B[kc]
C[A very big move.  Black expands territory and threatens the upper left.];
W[ef]
C[Double sente.  White threatens the Black stones on the left, while indirectly defending against an invasion at the top left.  A strong player feels these points instinctively.];
B[ei];W[qd]
C[White takes the last big point using a common invasion pattern.];
B[qe];W[re];B[pe];W[qc];B[rf];W[ob];B[rd];W[rc];B[se];W[nb];B[mc];W[rb]
LB[ra:A][qb:B]
C[Best way to make life.  White A also lives, but is more than a point worse.  Much later, in the endgame, the given move protects against the cut at B.]
)
    (;
    W[cg]
    C[Wrong direction.];
    B[cl];W[eq];B[fp];W[cn]
    C[White has let Black solidify territory along the bottom without making a corresponding amount of compensation in the upper left.]
    )
)

