(;AB[cb]AB[db]AB[eb]AB[bc]AB[bd]AW[fb]AW[fc]AW[ec]AW[dc]AW[cc]AW[ad]AW[be]AW[ce]AP[goproblems]
(;B[ba];W[ab];B[ac]C[RIGHT])
(;B[ab];W[ba];B[ea];W[ca]C[CHOICE])
(;B[ac];W[ba]
(;B[bb];W[aa]
(;B[ea];W[ca]C[CHOICE])
(;B[ca];W[ea]C[CHOICE]))
(;B[aa];W[bb]
(;B[ca];W[ea]C[CHOICE])
(;B[ea];W[ca]C[CHOICE]))
(;B[ca];W[ea];B[bb];W[aa]C[CHOICE]))
(;B[ea];W[ab]
(;B[ac];W[bb];B[ae];W[cd]C[CHOICE])
(;B[bb];W[ac]C[CHOICE]))
(;B[bb];W[ac];B[ab];W[ea]
(;B[da];W[ba];B[ae];W[ad]C[CHOICE])
(;B[ae];W[ad];B[da];W[ba]C[CHOICE])))