(;AB[bb]AB[bc]AW[cc]AW[bd]AW[ce]AW[fc]AW[gc]AB[gb]AB[ha]AW[ga]AB[hc]AB[ib]AW[dc]C[CHOICE]AP[goproblems]
(;B[da];W[ea]
(;B[eb];W[ca]
(;B[db];W[cb])
(;B[cb];W[db])
(;B[fa];W[cb]))
(;B[db];W[eb];B[cb];W[ac]
(;B[ab];W[ba])
(;B[ba];W[ab]))
(;B[cb];W[db])
(;B[fa];W[eb]))
(;B[ea];W[da]
(;B[db];W[eb]
(;B[ca];W[cb]
(;B[da];W[fb];B[fa]C[RIGHT])
(;B[fb];W[da]C[Ko])
(;B[fa];W[da]C[Ko]))
(;B[fa];W[cb])
(;B[cb];W[fa])
(;B[fb];W[fa];B[ea];W[fa]))
(;B[ca];W[db])
(;B[cb];W[db])
(;B[eb];W[db]))
(;B[eb];W[db];B[ea];W[da])
(;B[ca];W[ea]
(;B[eb];W[fb]
(;B[hb];W[db])
(;B[fa]C[Ko])
(;B[db];W[fa])
(;B[da];W[fa]))
(;B[fb];W[eb])
(;B[db];W[eb])
(;B[da];W[eb])))