(;AB[pd][qp][po][oo][ep][cq]AW[dc][cp][op][no][mp]TR[cq]C[White's response after Black's marked play?

Source:
    3rd Gosei Title, game 2.
    Kato Masao 9p (Black) vs. Otake Hideo 9p
    Go World #10, p. 12]SZ[19]
(;W[nm]C[The game line.  White is in a hurry to prevent Black from taking the initiative on the right side.

See the next variation to see what Black can do after playing first on the right side.];B[pm]C[Black must defend, because White moving here would be severe.]
(;W[hp]C[Now White's pincer feels right here.];B[dp]C[The game continued as follows.];W[co];B[bq];W[ck])
(;W[bq]C[Following up in this direction would be a mistake.];B[dq];W[bo];B[iq]C[Black's extension on the bottom works beautifully.]))
(;B[nn]C[If White responds on the left, Black would take the initiative here.];W[mn];B[mm];W[nm];B[on];W[ln];B[lm];W[kn];B[nl]C[This lower right corner continuation is standard, but Black's right side moyo would be excellent.])
(;W[qq]C[Attaching here is another possible local continuation, but ...];B[pq];W[pp];B[oq];W[np];B[qr];W[qo];B[rq];W[rp];B[qq]LB[pn:A][ed:B][on:C]TR[qo][rp]C[... now White has a global problem in choosing the next move.

If White goes for the ladder with A, Black has an excellent ladder breaker with B.

And creating outside thickness starting with White C, gives Black the marked stones and too much lower right corner territory.]
))