(;
AB[ec][ed][he][hf][hg][lc][le][ob][oc][pc][pd][oe][pf][qf][rf][qj][qp][pn][lp][dp][ie][kf][me][ne][md][mf][nb][og][oh][nh][mh][hh]
AW[dc][cd][df][ic][jd][if][ig][ih][pb][qb][qc][pe][qe][re][nc][of][qr][oq][np][nn][qd][nd][nf][ng][mg][lg][lf][kh][ke][je]
C[Black to play in the upper left.

Source:
    American Go Journal, Summer 1989, Vol. 23, No. 3, p. 29
    "Masterpieces of Handicap Go"
    Otake 4p  vs.  Kitani Minoru];
B[ce]
C[After the joseki in the upper left corner, Black should always be watching for a good time to spring this contact play!]
(;
W[de]
C[White can block here, but the result turns out good for Black.];
B[dd]
(;
W[cc]
C[Connecting looks normal, but ...];
B[cf];W[cg];B[bg]
C[... Black can slip down the left side.];
W[ch]
C[If White presses down, ...];
B[dg]
LB[eg:A]
C[... Black has this severe cut.  The ladder starting at A is bad for White, so White would take a huge loss here.]
)
    (;
    W[cf]
    C[White can capture the invading Black stone here, but ...];
    B[cc]
    C[... Black takes the corner.];
    W[be];B[bc];W[cj]
    C[Both Black and White now have safe groups, but ...];
    B[cl]
    C[... Black can then take this large territorial point.  The general result is satisfactory for Black.]
    )
)
    (;
    W[cf]
    C[This play keeps White's stones connected, ...];
    B[de];W[be];B[bf];W[bd];B[ef];W[bg]
    C[... but Black has settled his shape in sente.];
    B[gq]
    C[Now Black can use sente to play this huge point at the bottom.  The difference between White and Black playing first at the bottom is enormous.]
    )
)

