(;
AB[ec][cd][qd][ho][hp][ep][eq][mq][pq]
AW[oc][dn][fo][qo][cp][ip][iq][dq]
PL[W]
C[White's response to the marked play?

Source:
Go World #27, p. 65,  Spring 1982
Honinbo Genjo(W) v. Chitoku,
Commentary:  Tainaka Shin 9P]
TR[ho]
(;
W[hq]
C[If White just blocks here, ...];
B[gq];W[gp];B[eo]
C[... Black pushes out.];
W[fn];B[en];W[fm];B[em]
C[White cannot stop Black from running out.]
)
    (;
    W[gq]
    C[In the game, Honinbo Genjo played this clever jump.]
    (;
    B[en]
    C[Attaching here is tempting.];
    W[eo]
    C[If White intercepts here, ...];
    B[dp]
    (;
    W[do];B[cq]
    C[... Black should be able to settle the group.]
    )
        (;
        W[cq]
        C[And if White connects, ...];
        B[hq];W[hr];B[do];W[co];B[gp]
        C[... Black has a good result.]
        )
    )
        (;
        B[gp]
        C[In the game, Chitoku played this empty triangle.];
        W[hq];B[fp]
        C[Black plays another empty triangle.];
        W[lo]
        LB[hm:A][np:B]
        C[Now Genjo jumps out, making miai of A and B.]
        )
    )
)

