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