(;AB[bb]AB[bc]AB[ac]AB[ad]AB[cb]AB[db]AB[ea]AB[fa]AB[fb]AB[fc]AW[ae]AW[bd]AW[cd]AW[cc]AW[dc]AW[ec]AW[eb]AB[ce]AB[cf]AB[cg]AW[de]AW[df]AW[fd]AW[fe]AW[ff]AB[gd]AB[ge]AB[gf]AW[gc]AW[gb]AW[ic]AW[ib]AB[ie]AB[jd]AB[kc]AB[lb]C[save the marked stones]TR[gb]TR[gc]TR[ic]TR[ib]AP[goproblems](;W[ba](;B[da]C[CHOICE](;W[be];B[aa];W[ab]C[koRIGHT])(;W[ab];B[be])(;W[ga];B[be]))(;B[be];W[da];B[ca];W[ga];B[af];W[da]C[RIGHT]))(;W[da]C[];B[ca](;W[ga];B[da];W[aa];B[be])(;W[be];B[aa])(;W[aa];B[be]))(;W[ga];B[da](;W[ba];B[be])(;W[be];B[ba])(;W[jc];B[kb]))(;W[be];B[aa])(;W[ca];B[da])(;W[ab];B[aa]))