(;AB[dd][de][ec][jd][pd][pj][pp][qp][rp][op][np][lq]AW[nr][nq][pq][qq][rq][cq][ce][cf][cd][db][dc][qh]SZ[19]TR[qh]C[Black's response to White's unorthodox marked play?

Source:
    "How to Improve at Fuseki"
    Kato Masao 9P
    Go World, Vol. 12, p. 38]

(;B[qf]C[Black can simply play here, and has no reason to be afraid.]
(;W[oh]C[One possible follow up.];B[qi];W[rh];B[nj]C[Black can be pleased with this result.  White has no base, so Black can look forward to attacking.])
(;W[rj]C[Perhaps Black was afraid of the slide here?];B[ph]C[But Black only has to press down.];W[qi];B[pg];W[ql]C[White can slide down even further, but ...];B[pl];W[qm];B[pm]C[... even though White lives on the side, Black is satisfied with trading the solid wall on the bottom for an even bigger solid wall on the right.]))
(;B[qi]C[If for some reason, Black wants to prevent one of the previous variations for White, Black can simply attach here.];W[ph]C[A typical sequence follows.];B[nj];W[nh];B[nd]C[This result is good enough for Black.  Black makes territory and White is still destined to come under attack.]))