(;C[Black's response to the marked play?

Source:
    "Masterpieces of Handicap Go", Kato Masao 9p
    American Go Journal, Vol. 28, No. 3, pp. 18-19]SZ[19]AB[pd][qe][mc][dd][ed][fd][ge][cc][dp][fp][jq][pp]AW[cf][ef][dj][cn][hc][fb][ec][kc][qj]TR[kc]

(;B[ql]C[Kato should have approached from this direction.];W[qg]C[White makes a base, but ...];B[pq]C[... Black encloses the corner.  Black's stones are working efficiently.  Compare this position to the game in the following variation, in which Black approaches from the top.])
(;B[qh]C[Kato unwisely extended from his own strength, and only a 2 space extension at that.];W[qn]C[White is happy to approach the lower right corner.];B[np];W[jp]C[Now White, even playing against a 4 stone handicap, has a good position to create complications at the bottom.

White's contact play here is possible when the 2 ladders going off to the right and left are good for White.

The next few moves from the game show how White took advantage of Black's initial bad response.];B[ip];W[kq];B[iq];W[kp];B[ql];W[rl];B[rk];W[qk]
;B[rm];W[pl];B[qm];W[pm];B[pn];W[rn];B[sl];W[qp];B[qo];W[ro];B[po];W[qq];B[rj]
;W[or]))