(;
AB[dd][de][ce][fe][ge][he][gd][gc][hb][ib][ic][qe][qd][re][pd][od][qh][ph][oh][pl][qm][om][ro][pq][mq][mp][lr][lo][dp][ep][cq][dr][dn][hm][jm][jo][km][kn][lm][mm][ml][nr][rp][qn][on][oo][no][rj][lh][li]
AW[cc][cd][eb][fc][fd][gb][ha][hc][gf][cj][cl][co][cp][hq][kq][lq][kr][ll][nl][ni][pi][pn][qo][pp][rq][qr][nc][pc][qc][rc][rd][qf][oi][mj][lj][mk][kl][jk][ji][ki][cm][fr][ho][oq][op][qp][nm][nn][mn][ln]
C[Black to play against the lower
side group.

Source:
    "Go World", #32, Summer 1983, p. 19
    Cho Chikun  vs.  Kato Masao
    21st Judan Title, game 2
    Ohira Shuzo commentary.]
(;
B[gq]
C[Inferior.
But with strong Black groups surrounding the
White group, any Black move looks good.];
W[gr];
B[jq];
W[ir]
C[An unexpected defensive resource
that blunts Black's attack.]
)
    (;
    B[ip]
    C[Correct.]
    (;
    W[hp]
    C[If White connects to try to save all his stones...];
    B[jr];
    W[jq];
    B[ks];
    W[ir];
    B[js];
    W[iq];
    B[fp];
    W[gn];
    B[fl]
    C[And White's entire group is in danger.]
    )
        (;
        W[iq]
        C[Maybe the best White can do.];
        B[jr];
        W[jq];
        B[ks];
        W[gn]
        C[But this line is better for Black than
in the game.]
        )
    )
)
