(;
AB[eb][kb][ec][kc][ed][fd][hd][kd][ff][kg][gh][hh][ih][jh][ef][eh][le][lf]
AW[db][dc][jc][dd][gd][id][jd][he][ie][gf][if][hg][ig][de][cg][bb]
C[Black plays.];
B[hc]
C[OK, the first move is obvious.];
W[gc];B[hb];W[gb]
C[Now Black has a harder question to answer.]
(;
B[ia]
C[Connecting out here is a mistake.];
W[ga]
C[White first threatens to connect out to the left.];
B[ea];W[ib]
C[White can squeeze here.];
B[jb];W[ha]
C[White captures the 3 stones in a snapback.]
)
    (;
    B[jb]
    C[No better.];
    W[ga];B[ea];W[ib]
    C[White still traps the 3 stones.]
    )
    (;
    B[ga]
    C[Correct defense.];
    W[fa];B[ia];W[ib];B[ja]
    C[This ko is the best result for both sides.]
    )
)

