(;
AB[bb][cc][bd][cd][ce][dd][ed][fe][ff][hd][id][ic][rd][qc][pd][oc][nc][mb][pe][gi][ck][cm][dp][qq][qn][pq][nq][np][mq][lq][lp][go][ho][io][jo][ko]
AW[db][dc][ec][fd][gc][hc][ge][gf][gg][eg][ee][de][ei][ci][ek][ob][pb][qb][rb][pc][od][pj][qp][pp][oo][no][mn][lo][mp][kp][kn][jn][in][hn]
M[od][pe]
C[After White's marked cut, Black
extended with the marked stone.
What is White's best response?

Kato Masao vs. Nieh Wei-p'ing
1982-June-12, Nihon Ki-in
Source:  Go World #29, Autumn 1982, p. 11]

(;
W[oe]
C[Better than the actual game shown in the other variation.];
B[of];
W[md];
B[qg]
C[Defends Black's right side group, but
leaves the top group weak.];
W[nf];
B[og];
W[kc];
B[kd];
W[kb]
)
    (;
    W[md]
    C[Mistake.  The actual game continued this way...];
    B[nd];
    W[oe];
    B[me]
    C[Now an effective attack against Black is
very hard.];
    W[of];
    B[qg];
    W[qj];
    B[ri];
    W[pf];
    B[rj];
    W[rk];
    B[qf];
    W[rc];
    B[qd];
    W[mf];
    B[le];
    W[re];
    B[sd];
    W[lf];
    B[nf];
    W[ng];
    B[ne];
    W[og];
    B[rl];
    W[kf]
    )
)
