(;AB[bb]AB[db]AB[dc]AB[cc]AB[ec]AB[fb]AB[fa]AW[ba]AW[da]AW[bc]AW[bd]AW[cd]AW[dd]AW[ed]AW[fc]AW[gc]AW[gb]AP[goproblems]
(;B[ab];W[ga]
(;B[ca];W[cb]C[Disadv. koCHOICE])
(;B[eb];W[cb]C[Adv. koCHOICE]))
(;B[ea];W[ab]
(;B[ca];W[cb]C[Disadv. koCHOICE])
(;B[cb]C[RIGHT]))
(;B[ca];W[cb]C[Disadv. koCHOICE])
(;B[cb];W[ga]
(;B[ca];W[ea];B[eb];W[ab]C[CHOICE])
(;B[eb];W[ab]C[CHOICE])))
