(;SZ[13]AB[db]AB[ea]AB[ec]AB[fc]AB[hc]AB[gc]AB[ib]AB[ha]AW[ca]AW[cb]AW[dc]AW[dd]AW[ed]AW[fd]AW[gd]AW[hd]AW[ic]AW[jc]AW[jb]AW[ja]AP[goproblems]
(;B[gb];W[ia]
(;B[fa];W[hb]C[Disadvantage koRIGHT])
(;B[fb];W[da]C[CHOICE]))
(;B[eb];W[ia]C[CHOICE])
(;B[fb];W[da]
(;B[ga];W[eb]C[Disadvantage koRIGHT])
(;B[gb];W[ia]C[CHOICE]))
(;B[hb];W[da]C[CHOICE])
(;B[ia];W[ga]C[CHOICE])
(;B[da];W[fa]C[CHOICE])
(;B[ga];W[fb]
(;B[gb];W[ia]C[CHOICE])
(;B[ia];W[gb]C[CHOICE]))
(;B[fa];W[gb]
(;B[da];W[fb]C[CHOICE])
(;B[fb];W[da]C[CHOICE])))