(;
AB[pd][pp][dq][ep][dn][cl]
AW[cd][ec][cj][co][jq]
C[White's response to Black's marked enclosure of the lower left?

Source:
    "This is Go the Natural Way!", Part V
    Takemiya Masaki 9P
    American Go Journal, Vol. 28, No. 2, pp. 28-29]
TR[dn]
(;
W[mq]
C[Because Black has a thick position on the left, White should think about avoiding a fight on the bottom by making a 2 space extension here.];
B[qj]
C[Black would then hurry to occupy this big point ];
W[pr]
(;
B[jd]
C[And then Black could take the next big point at the top, but White has a solid position on the lower side.]
)
    (;
    B[ch]
    C[Black might also think about invading the left side.];
    W[ej];B[eh];W[gj];B[gh]
    C[This running battle would develop.]
    )
)
    (;
    W[nq]
    C[In this game against Takemiya, Ishida Yoshio 9P played this thin 3 space extension.];
    B[lq]
    C[With the strong position on the left, Takemiya immediately invaded to start a fight.]
    (;
    W[no]
    C[The best answer is to jump here.  The expected sequence follows.];
    B[pn];W[kp];B[oq];W[nr];B[qj]
    C[Because White preserves the position at the bottom, Whtie can be satisfied with the overall result.]
    )
        (;
        W[qq]
        C[In the game, Ishida invades with this tight territorial move.];
        B[pq];W[qp];B[po];W[pr];B[or];W[qr];B[nr];W[qn]
        C[Black has given up a little territory on the right, but Black has already profited in the lower left, and ...];
        B[hq]
        C[... Black has sente to pincer here to take control of the game tempo.];
        W[jo]
        C[White must simply run away.];
        B[lo]
        C[The conclusion is that White's opening is flawed, and Black's play followed the natural flow of the game.]
        )
    )
)

